Rapid detection method for quality index of aluminum-free baking powder and combined device

Abstract

The invention discloses a rapid detection method for quality indexes of aluminum-free baking powder and a combined device, and belongs to the field of food additives. The method comprises the following specific steps: preparing an experimental group baking powder sample and a blank group baking powder sample required by detection; putting the test group baking powder sample into a water bath reaction box for constant-temperature water bath reaction; adding heated deionized water (above 90 DEG C) into the experimental group sample tubes after water bath, collecting gas, and reading parameters; putting the blank group baking powder sample into a water bath reaction box for constant-temperature water bath reaction; adding heated deionized water (above 90 DEG C) into the blank group sample tube after the water bath, collecting gas, and reading parameters; the gas production rate index of the baking powder is calculated through a formula, and the gas production duration time of the baking powder and the PH value of the baking powder after being dissolved in water are obtained by reading parameters. In addition, the invention provides a combined device for rapidly detecting baking powder quality indexes (gas production rate, gas production duration and pH value of an aqueous solution), and the device consists of a water bath reaction box (part A), a handheld sampler (part B), a sample tube placing rack (part C) and a baking powder produced gas collecting device (part D). The invention provides a method capable of detecting a plurality of samples at one time, so that the detection efficiency and accuracy are improved, and a detection device is integrated.

Description

Technical Field

[0001] The present application relates to the field of food additive detection, and more specifically to a rapid detection method and combined device for quality indicators of aluminum-free baking powder. Background Art

[0002] Baking powder, also known as compound leavening agent, is a food additive. Baking powder added to rice and flour products can make flour-made foods fluffy and porous, soft and crispy, easy to chew, increase nutrition, easy to digest and absorb, and present a special flavor, thereby improving the quality of food. The ingredients of the baking powder detected by this method are limited as follows: sodium bicarbonate, phosphate, glucono-δ-lactone, citric acid, calcium carbonate, calcium sulfate, salt, corn starch, all raw materials are powder raw materials, and the addition ratio of the above raw materials is compounded and combined into different product varieties according to the gas production rate and gas production to meet customer needs. These raw materials are suitable for many types of food in food processing, have high safety performance, and are conducive to the development of food additive products in the direction of health and safety. The main production steps of baking powder products are: screening, weighing, mixing, gold inspection, and packaging. The main principle of baking powder in producing gas in food is: when baking powder meets water, the acid salts (phosphate, glucono-δ-lactone, citric acid) in its ingredients react chemically with the basic salts (sodium bicarbonate) to produce edible carbon dioxide gas, thereby making the product fluffy. It plays a vital role in the production and processing of rice and flour foods, and has promoted the development of the food industry.

[0003] At present, the new aluminum-free baking powder is popular in the market. Because it does not contain aluminum, potassium hydrogen tartaric acid and other ingredients, it meets the consumer's demand for safe and healthy food ingredients, and is in line with the development trend of food safety and dietary health. The market share of rice and flour products such as steamed buns, buns, fried foods and other breakfast products in my country has now reached more than 10 billion, and the production of these products cannot be separated from baking powder. Therefore, the industrialization of aluminum-free baking powder can bring good social and economic benefits, especially in the application of rice and flour foods, and the prospects are broad. While pursuing safety and health, aluminum-free baking powder has higher and higher requirements for product quality. As an important indicator of the product, gas production is also of great concern to consumers, and baking powder manufacturers also attach great importance to the control of this quality indicator.

[0004] The prior art CN202321268348 discloses a baking powder gas production detection device, which has more than 50 components and a complex structure. It needs to be specially customized for enterprise detection, which increases costs; the device can only measure one sample at a time, and cannot adapt to the detection of multiple batches of samples, and has many components and incomplete arrangement, which is not suitable for the needs of rapid detection; the device is not a complete baking powder gas production detection device, and does not involve coordination and connection with the gas production device, and cannot improve the matching of the detection device, and cannot track the corresponding tubes separately; in addition, the device cannot really improve the accuracy of the detection, mainly because of the lack of connection with the gas production part, and it only changes the manual degree in the national standard GB1886.245 to display control, but the structure is much more complicated and the actual efficiency is not greatly improved.

[0005] In recent years, with the enhancement of food safety awareness and increasingly stringent regulations, the demand for accurate detection of food additives such as baking powder has become increasingly urgent. At present, baking powder, as a compound food additive, is widely used in food processing, but its excessive or out-of-range use may pose a potential threat to food safety. With the continuous development of the food industry, the types and usage of baking powder are also constantly changing, and higher requirements are also put forward for detection technology. At present, the detection device of the baking powder gas production device has the disadvantages of cumbersome components, insufficient connection, many manual operation errors, low efficiency of detection samples, and defects in the detection principle. Therefore, the development of more efficient, accurate and convenient baking powder detection technology has become an important research direction in the current field of food additive detection. This will help to further improve the level of food safety and protect the health rights and interests of consumers. Summary of the invention

[0006] The gas production (carbon dioxide), gas production duration, and pH value of the aqueous solution of baking powder are basic indicators that reflect its performance. The more gas produced by the same amount of baking powder products, the better its rising performance; the longer the baking powder produces gas, the better its application effect; the pH value of the baking powder aqueous solution will affect the application effect of the baking powder. Too high or too low a pH value will cause the taste of its application products to deteriorate. Therefore, the detection of these three indicators is a basic means of monitoring the quality of baking powder products. Production-oriented enterprises often produce more formula models and batches, and the method of rapid detection of baking powder quality indicators can meet the needs. At present, the basic principle of detecting the gas production of baking powder is to disperse the baking powder with warm water, add a strong acid (such as hydrochloric acid), react with the basic salt (sodium bicarbonate) in the baking powder, produce carbon dioxide, and collect it. These methods and devices have the following disadvantages: the detection device components are cumbersome, the connection is not close enough, there are many manual operation errors, and the efficiency of detecting samples is low; there is a deviation between the reaction using hydrochloric acid and the actual application, because aluminum-free baking powder generally adds auxiliary materials such as calcium carbonate and calcium sulfate, and these auxiliary materials will not react in actual application. If hydrochloric acid is used for detection, the result will be biased. Moreover, most of the current methods for detecting the quality indicators of baking powder can only detect one indicator of a sample at a time, and the efficiency is too low. In view of the above shortcomings, the patent of the present invention has designed a detection method and device that can quickly detect the quality indicators of baking powder. It can not only detect the gas production, but also can detect the duration of gas production and the pH value of the aqueous solution at the same time. It can provide more comprehensive and timely feedback on the quality and performance of baking powder, and can detect multiple samples at a time, improve the detection method, integrate the detection device, and improve efficiency. The specific technical scheme of the present invention is as follows:

[0007] The present invention provides a rapid detection method for quality indicators of aluminum-free baking powder, which is characterized by comprising the following steps:

[0008] (1) preparing baking powder samples of the experimental group and the baking powder samples of the blank group required for testing;

[0009] (2) adding the baking powder sample of the experimental group into the sample tube in the baking powder gas production reactor, and then placing the sample tube into the hole of the water bath reaction box with a handheld sampler, setting the water temperature of the water bath reaction box, and maintaining a constant temperature;

[0010] (3) Connect the placed experimental group sample tube to the three-way valve in the baking powder gas collector, add heated deionized water (above 90°C) to the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure, gas volume, duration of gas production, and pH value of the aqueous solution in the gas collection tube: T1, P1, V1, t1, PH1;

[0011] (4) adding a blank baking powder sample into a sample tube in a baking powder gas generating reactor, and then placing the sample tube into a hole of a water bath reaction box using a handheld sampler, setting the water temperature of the water bath reaction box, and maintaining a constant temperature;

[0012] (5) Connect the placed blank sample tube to the three-way valve in the baking powder gas collector, add heated deionized water (above 90°C) to the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas to the gas collection tube in the baking powder gas collector, and read the temperature, pressure, and gas volume generated in the gas collection tube: T0, P0, V0 respectively;

[0013] (6) The gas production A is calculated by the formula.

[0014] Furthermore, the ingredients of the baking powder sample in step (1) include: sodium bicarbonate, phosphate, glucono-δ-lactone, citric acid, calcium carbonate, calcium sulfate, salt, and corn starch.

[0015] Furthermore, in the step (2), the weight ratio of the baking powder sample to the deionized water is (1-2):(60-120).

[0016] Furthermore, the water bath temperature in step (2) is 80-90°C.

[0017] Furthermore, in step (6), the calculation process of the formula is as follows: the amount of carbon dioxide gas generated is measured by the volume A of carbon dioxide generated per gram of sample under standard conditions, in milliliters per gram (mL / g), and the calculation formula is:

[0018]

[0019] A=A1-A0

[0020] The gas production of the experimental group is (A1) (mL / g)

[0021] The gas production of the blank group is (A0) (mL / g)

[0022] V1: gas production volume of the experimental group, in mL;

[0023] P1: pressure of the experimental group, in kPa;

[0024] T1: temperature of the experimental group, in K;

[0025] m1: mass of the experimental group, in g;

[0026] V0: gas production volume of the blank group, in mL;

[0027] P0: pressure of the blank group, in kPa;

[0028] T0: temperature of the blank group, in K;

[0029] m0: mass of blank group, unit: g;

[0030] 101.3: atmospheric pressure under standard conditions, in kPa;

[0031] 273: Temperature under standard conditions, in K;

[0032] The present invention also provides a combined device for quickly detecting the quality index of aluminum-free baking powder. The device is divided into four parts: a water bath reaction box (part A), a handheld sampler (part B), a sample tube placement rack (part C), and a baking powder gas generation collection device (part D). The use of each part of the device is introduced as follows:

[0033] The invention is characterized in that the device consists of a water bath reaction box (part A), a handheld sampler (part B), a sample tube placement rack (part C), and a baking powder gas generation collection device (part D).

[0034] Furthermore, part A is a water bath reaction box, which can be filled with water, has a serpentine heating tube (2), can be connected to a temperature control device (3), can heat the water temperature to a set temperature, and has a hole (1) on the top of the box for placing a sample tube. This part is connected to the sample tube in part C through the sampler in part B.

[0035] Furthermore, part B is a handheld sampler for inserting the sample tube, which is connected to the sample tube in part C. Insert the (5) component into the sample tube (in part C) filled with the sample, and then insert the sample tube into the sample tube hole in part A, and then press the (4) buckle device and move the (6) push ring to place the sample tube in part A, so as to achieve rapid sampling.

[0036] Furthermore, part C is a sample tube placement rack that matches part B and has four sample tubes (7) inserted therein. The handheld device of part B is combined so that the sample tubes can be placed into the sockets of the water bath reaction box of part A to complete the sample placement step. In addition, water and samples need to be added to the sample tubes in this step.

[0037] Furthermore, part D is a gas collection device for baking powder, which is used in conjunction with the device in part A and is connected to the sample tube in part A. (9) is a three-way valve, which is connected to the sample tube at the bottom and is equipped with a pH value detection probe (16) that can contact the solution in the sample tube. The probe is connected to the display device (11). The top of (9) is connected to a funnel (8) for dripping liquid reagents. The right side is a rubber hose (10) connected to the gas collection pipe. (12) is a gas pipe for collecting gas production. Three probes are installed on the top of the gas pipe, namely a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the gas production volume and the duration of gas production. The three probes are respectively connected to the display device (11) to directly obtain the degree. Four similar devices correspond to four sample tubes.

[0038] The beneficial technical effects of the present invention are as follows:

[0039] (1) The detection method of the present invention can simultaneously accommodate and detect the gas production process of four samples through a parallel processing mechanism, which greatly shortens the overall detection cycle compared to the traditional single sample detection method. This design is particularly suitable for large-scale sample detection scenarios, such as laboratory research, industrial production quality control, etc., effectively improving work efficiency and reducing time costs.

[0040] (2) The detection device of the present invention has been optimized and designed. It is not only more compact and easy to operate, but also incorporates an advanced electronic heating system to ensure accurate control of experimental conditions. It directly monitors temperature, pressure, gas flow, gas production duration, and pH value of aqueous solution in real time, reducing errors caused by environmental fluctuations or human operation, and improving the accuracy and reliability of detection data. In addition, the compact structural design reduces space occupancy and facilitates the layout of laboratories or production lines.

[0041] (3) The device of the present invention has built-in advanced sensors and data processing systems, which can directly read and display key parameters such as temperature, pressure, gas flow, gas production duration, and pH value of aqueous solution. The quality performance of aluminum-free baking powder can be directly judged by the above parameters without having to do additional testing tests, which greatly improves efficiency and eliminates the cumbersome table lookup steps in traditional methods. This improvement not only improves detection efficiency, but also reduces the requirements for the professional skills of operators, allowing non-professionals to quickly get started with experimental operations, promoting the popularization and application of technology.

[0042] (4) The detection method of the present invention aims at the defect that the current common method for detecting the gas production of baking powder is to add strong acid, and to allow sodium bicarbonate to react completely to detect the gas production of carbon dioxide. The present invention adds a blank group, that is, a standard sample is configured, and the sample does not add sodium bicarbonate to exclude the gas produced by the reaction of other auxiliary materials and strong acid, increase the accuracy of detection, and improve the current detection method. By comparing the test results of the experimental group and the blank group, the gas production contribution of sodium bicarbonate can be separated more accurately, effectively eliminating the interference of other factors, and significantly improving the accuracy and reliability of the detection.

[0043] (5) The present invention achieves a significant improvement in detection accuracy by adding a standard sample blank group without adding additional detection steps. This design cleverly utilizes existing resources, avoids the cumbersome process of setting up a blank group for blanking in traditional methods, and further simplifies the detection process. At the same time, due to the reduction of unnecessary operating steps and time consumption, the overall detection efficiency is further improved, which helps to speed up the product development cycle and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the water bath reaction box (Part A)

[0045] Figure 2 Schematic diagram of the structure of the handheld sampler (Part B)

[0046] Figure 3 Schematic diagram of the sample tube rack (Part C)

[0047] Figure 4 Schematic diagram of the structure of the baking powder gas collection device (Part D)

[0048] Figure 5 Baking powder gas collection device (Part D) Schematic diagram of the gas pipe structure for collecting gas

[0049] Figure 6 Flow chart of the rapid detection method of the gas production of baking powder according to the present invention DETAILED DESCRIPTION

[0050] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present application are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0051] Implementation

[0052] The specific embodiments of the present invention are further described below. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] Unless otherwise specified, the test materials used in the following examples can be purchased through conventional commercial channels.

[0054] Table 1 is a product quality index performance table developed based on the actual application of baking powder, which can be used to determine the performance of each index of baking powder. Through these three quality indicators, the comprehensive performance index of baking powder can be determined. The judgment rules are as follows: if more than two of the three indicators are strong at the same time, the comprehensive performance is strong; if more than two of the three indicators are weak at the same time, the comprehensive performance is weak; otherwise, the comprehensive performance is medium.

[0055] Table 1

[0056]

[0057] Example 1

[0058] This embodiment uses a combined device for quickly detecting the quality indicators of aluminum-free baking powder. The device is divided into four parts: a water bath reaction box (Part A), a handheld sampler (Part B), a sample tube placement rack (Part C), and a baking powder gas generation collection device (Part D).

[0059] The invention is characterized in that the device consists of a water bath reaction box (part A), a handheld sampler (part B), a sample tube placement rack (part C), and a baking powder gas generation collection device (part D).

[0060] Part A is a water bath reaction box, which can be filled with water and has a serpentine heating tube (2) connected to a temperature control device (3) to heat the water to a set temperature. A hole (1) is provided on the top of the box for placing a sample tube. This part is connected to the sample tube in part C through the sampler in part B.

[0061] Part B is a handheld sampler for inserting the sample tube, which is connected to the sample tube in part C. Insert the (5) component into the sample tube (in part C) filled with the sample, and then insert the sample tube into the sample tube hole in part A. Then, by pressing the (4) buckle device and moving the (6) push ring, the sample tube is placed in part A to achieve rapid sampling.

[0062] Part C is a sample tube placement rack that matches Part B and has four sample tubes (7) inserted therein. The handheld device of Part B is combined so that the sample tubes can be placed in the sockets of the water bath reaction box of Part A to complete the sample placement step. In addition, water and samples need to be added to the sample tubes in this step.

[0063] Part D is a device for collecting gas produced by baking powder, which is used in conjunction with the device in Part A and is connected to the sample tube in Part A. Part (9) is a three-way valve, which is connected to the sample tube at the bottom and is equipped with a pH value detection probe (16) that can contact the solution in the sample tube. The probe is connected to the display device (11). The top of (9) is connected to a funnel (8) for dripping liquid reagents. The right side is a rubber hose (10) connected to the gas collection tube. (12) is a gas tube for collecting gas production. Three probes are installed on the top of the gas tube, namely a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the volume of gas produced and the duration of gas production. The three probes are connected to the display device (11) respectively to directly obtain the degree. Four similar devices correspond to four sample tubes.

[0064] The specific steps of the detection method described in this embodiment are:

[0065] (1) Prepare the experimental group baking powder samples and blank group baking powder samples required for testing:

[0066] The mass of each component of the baking powder sample in the experimental group is:

[0067] Experimental group 1 (frozen baking powder): sodium bicarbonate 0.5g, phosphate 0.1g, glucono-δ-lactone 0.3g, citric acid 0.1g, calcium carbonate 0.05g, calcium sulfate 0.05g, salt 0.02g, corn starch 0.88g;

[0068] Experimental group 2 (aluminum-free baking powder): sodium bicarbonate 0.6 g, phosphate 0.3 g, glucono-δ-lactone 0.2 g, citric acid 0.06 g, calcium carbonate 0.03 g, calcium sulfate 0.03 g, salt 0.02 g, corn starch 0.76 g;

[0069] Experimental group 3 (high-quality baking powder): sodium bicarbonate 0.56g, phosphate 0.1g, glucono-δ-lactone 0.4g, citric acid 0.04g, calcium carbonate 0.02g, calcium sulfate 0.02g, salt 0.02g, corn starch 0.84g;

[0070] Experimental group 4 (high-efficiency baking powder): sodium bicarbonate 0.6 g, phosphate 0.4 g, glucono-δ-lactone 0.1 g, citric acid 0.1 g, calcium carbonate 0.03 g, calcium sulfate 0.03 g, salt 0.02 g, corn starch 0.72 g;

[0071] The mass of each component of the blank baking powder sample is:

[0072] Blank group 1 (frozen baking powder) (sodium bicarbonate removed): phosphate 0.1 g, glucono-δ-lactone 0.3 g, citric acid 0.1 g, calcium carbonate 0.05 g, calcium sulfate 0.05 g, salt 0.02 g, corn starch 0.88 g;

[0073] Blank group 2 (aluminum-free baking powder) (sodium bicarbonate removed): phosphate 0.3 g, glucono-δ-lactone 0.2 g, citric acid 0.06 g, calcium carbonate 0.03 g, calcium sulfate 0.03 g, salt 0.02 g, corn starch 0.76 g;

[0074] Blank group 3 (high-quality baking powder) (without sodium bicarbonate): phosphate 0.1g, glucono-δ-lactone 0.4g, citric acid 0.04g, calcium carbonate 0.02g, calcium sulfate 0.02g, salt 0.02g, corn starch 0.84g;

[0075] Blank group 4 (high-efficiency baking powder) (without sodium bicarbonate): phosphate 0.4g, glucono-δ-lactone 0.1g, citric acid 0.1g, calcium carbonate 0.03g, calcium sulfate 0.03g, salt 0.02g, corn starch 0.72g;

[0076] (2) Add 2 g of baking powder from four different types of experimental groups into the sample tubes in the baking powder gas production reactor, and then place the sample tubes in the holes of the water bath reaction box using a handheld sampler. Set the water temperature of the water bath reaction box to 85°C and keep the temperature constant;

[0077] (3) Connect the placed experimental group sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90°C) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure, gas volume, gas production duration, and pH value of the aqueous solution in the gas collection tube respectively: T1, P1, V1, t1, PH1;

[0078] (4) 1.5 g, 1.4 g, 1.44 g, and 1.4 g of four different types of blank baking powder were added to the sample tube in the baking powder gas production reactor, and then the sample tube was placed in the hole of the water bath reaction box using a handheld sampler. The water temperature of the water bath reaction box was set to 85°C and maintained at a constant temperature;

[0079] (5) Connect the placed blank sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90° C.) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure and gas volume generated in the gas collection tube respectively: T0, P0, V0;

[0080] (6) The gas production is calculated using the formula.

[0081] The calculation process of the formula is as follows: The amount of carbon dioxide gas generated is measured by the volume A of carbon dioxide generated per gram of sample under standard conditions, in milliliters per gram (mL / g), and the calculation is publically shown as:

[0082]

[0083] A=A1-A0

[0084] The gas production of the experimental group is (A1) (mL / g)

[0085] The gas production of the blank group is (A0) (mL / g)

[0086] V1: gas production volume of the experimental group, in mL;

[0087] P1: pressure of the experimental group, in kPa;

[0088] T1: temperature of the experimental group, in K;

[0089] m1: mass of the experimental group, in g;

[0090] V0: gas production volume of the blank group, in mL;

[0091] P0: pressure of the blank group, in kPa;

[0092] T0: temperature of the blank group, in K;

[0093] m0: mass of blank group, unit: g;

[0094] 101.3: atmospheric pressure under standard conditions, in kPa;

[0095] The temperature, pressure, gas volume, gas production duration, aqueous solution pH value and gas production data of the above 4 experimental groups and 4 blank groups are shown in Table 2:

[0096] Table 2

[0097]

[0098] Under the same conditions, parallel tests were conducted to enhance the accuracy of the results. The test results are shown in Table 3:

[0099] Table 3

[0100]

[0101] Example 2

[0102] This embodiment uses a combined device for quickly detecting the quality indicators of aluminum-free baking powder. The device is divided into four parts: a water bath reaction box (Part A), a handheld sampler (Part B), a sample tube placement rack (Part C), and a baking powder gas generation collection device (Part D).

[0103] The invention is characterized in that the device consists of a water bath reaction box (part A), a handheld sampler (part B), a sample tube placement rack (part C), and a baking powder gas generation collection device (part D).

[0104] Part A is a water bath reaction box, which can be filled with water and has a serpentine heating tube (2) connected to a temperature control device (3) to heat the water to a set temperature. A hole (1) is provided on the top of the box for placing a sample tube. This part is connected to the sample tube in part C through the sampler in part B.

[0105] Part B is a handheld sampler for inserting the sample tube, which is connected to the sample tube in part C. Insert the (5) component into the sample tube (in part C) filled with the sample, and then insert the sample tube into the sample tube hole in part A. Then, by pressing the (4) buckle device and moving the (6) push ring, the sample tube is placed in part A to achieve rapid sampling.

[0106] Part C is a sample tube placement rack that matches Part B and has four sample tubes (7) inserted therein. The handheld device of Part B is combined so that the sample tubes can be placed in the sockets of the water bath reaction box of Part A to complete the sample placement step. In addition, water and samples need to be added to the sample tubes in this step.

[0107] Part D is a device for collecting gas produced by baking powder, which is used in conjunction with the device in Part A and is connected to the sample tube in Part A. Part (9) is a three-way valve, which is connected to the sample tube at the bottom and is equipped with a pH value detection probe (16) that can contact the solution in the sample tube. The probe is connected to the display device (11). The top of (9) is connected to a funnel (8) for dripping liquid reagents. The right side is a rubber hose (10) connected to the gas collection tube. (12) is a gas tube for collecting gas production. Three probes are installed on the top of the gas tube, namely a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the volume of gas produced and the duration of gas production. The three probes are connected to the display device (11) respectively to directly obtain the degree. Four similar devices correspond to four sample tubes.

[0108] The specific steps of the detection method described in this embodiment are:

[0109] (1) Prepare the experimental group baking powder samples and blank group baking powder samples required for testing:

[0110] The mass of each component of the baking powder sample in the experimental group is:

[0111] Experimental group 5 (ordinary baking powder): sodium bicarbonate 0.5g, phosphate 0.04g, glucono-δ-lactone 0.04g, citric acid 0.04g, calcium carbonate 0.2g, calcium sulfate 0.2g, salt 0.02g, corn starch 0.96g;

[0112] Experimental group 6 (high-quality baking powder): sodium bicarbonate 0.6g, phosphate 0.5g, glucono-δ-lactone 0.04g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.8g;

[0113] Experimental group 7 (barbecued pork bun type baking powder): sodium bicarbonate 0.56g, phosphate 0.04g, glucono-δ-lactone 0.4g, citric acid 0.06g, calcium carbonate 0.02g, calcium sulfate 0.02g, salt 0.02g, corn starch 0.88g;

[0114] Experimental group 8 (BBQ pork bun type II baking powder): sodium bicarbonate 0.5g, phosphate 0.44g, glucono-δ-lactone 0.02g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.98g;

[0115] The mass of each component of the blank baking powder sample is:

[0116] Blank group 5 (ordinary baking powder) (without sodium bicarbonate): phosphate 0.04g, glucono-δ-lactone 0.04g, citric acid 0.04g, calcium carbonate 0.2g, calcium sulfate 0.2g, salt 0.02g, corn starch 0.96g;

[0117] Blank group 6 (high-quality baking powder) (without sodium bicarbonate): phosphate 0.5g, glucono-δ-lactone 0.04g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.8g;

[0118] Blank group 7 (barbecued pork bun type baking powder) (sodium bicarbonate removed): phosphate 0.04g, glucono-δ-lactone 0.4g, citric acid 0.06g, calcium carbonate 0.02g, calcium sulfate 0.02g, salt 0.02g, corn starch 0.88g;

[0119] Blank group 8 (BBQ pork bun type II baking powder) (sodium bicarbonate removed): phosphate 0.44g, glucono-δ-lactone 0.02g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.98g;

[0120] (2) Add 2 g of baking powder from four different types of experimental groups into the sample tubes in the baking powder gas production reactor, and then place the sample tubes in the holes of the water bath reaction box using a handheld sampler. Set the water temperature of the water bath reaction box to 85°C and keep the temperature constant;

[0121] (3) Connect the placed experimental group sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90°C) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure, gas volume, gas production duration and pH value of the aqueous solution in the gas collection tube respectively: T1, P1, V1, t1, PH1;

[0122] (4) 1.5 g, 1.4 g, 1.44 g, and 1.5 g of four different types of blank baking powder were added to the sample tube in the baking powder gas production reactor, and then the sample tube was placed in the hole of the water bath reaction box using a handheld sampler. The water temperature of the water bath reaction box was set to 85°C and maintained at a constant temperature;

[0123] (5) Connect the placed blank sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90° C.) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure and gas volume generated in the gas collection tube respectively: T0, P0, V0;

[0124] (6) The gas production is calculated using the formula.

[0125] The calculation process of the formula is as follows: The amount of carbon dioxide gas generated is measured by the volume A of carbon dioxide generated per gram of sample under standard conditions, in milliliters per gram (mL / g), and the calculation is publically shown as:

[0126]

[0127] A=A1-A0

[0128] The gas production of the experimental group is (A1) (mL / g)

[0129] The gas production of the blank group is (A0) (mL / g)

[0130] V1: gas production volume of the experimental group, in mL;

[0131] P1: pressure of the experimental group, in kPa;

[0132] T1: temperature of the experimental group, in K;

[0133] m1: mass of the experimental group, in g;

[0134] V0: gas production volume of the blank group, in mL;

[0135] P0: pressure of the blank group, in kPa;

[0136] T0: temperature of the blank group, in K;

[0137] m0: mass of blank group, unit: g;

[0138] 101.3: atmospheric pressure under standard conditions, in kPa;

[0139] The temperature, pressure, gas volume, gas production duration, aqueous solution pH value and gas production data of the above 4 experimental groups and 4 blank groups are shown in Table 4:

[0140] Table 4

[0141]

[0142] Under the same conditions, parallel tests were conducted to enhance the accuracy of the results. The test results are shown in Table 5:

[0143] Table 5

[0144]

[0145]

[0146] Example 3

[0147] This embodiment uses a combined device for quickly detecting the quality indicators of aluminum-free baking powder. The device is divided into four parts: a water bath reaction box (Part A), a handheld sampler (Part B), a sample tube placement rack (Part C), and a baking powder gas generation collection device (Part D).

[0148] The invention is characterized in that the device consists of a water bath reaction box (part A), a handheld sampler (part B), a sample tube placement rack (part C), and a baking powder gas generation collection device (part D).

[0149] Part A is a water bath reaction box, which can be filled with water and has a serpentine heating tube (2) connected to a temperature control device (3) to heat the water to a set temperature. A hole (1) is provided on the top of the box for placing a sample tube. This part is connected to the sample tube in part C through the sampler in part B.

[0150] Part B is a handheld sampler for inserting the sample tube, which is connected to the sample tube in part C. Insert the (5) component into the sample tube (in part C) filled with the sample, and then insert the sample tube into the sample tube hole in part A. Then, by pressing the (4) buckle device and moving the (6) push ring, the sample tube is placed in part A to achieve rapid sampling.

[0151] Part C is a sample tube placement rack that matches Part B and has four sample tubes (7) inserted therein. The handheld device of Part B is combined so that the sample tubes can be placed in the sockets of the water bath reaction box of Part A to complete the sample placement step. In addition, water and samples need to be added to the sample tubes in this step.

[0152] Part D is a device for collecting gas produced by baking powder, which is used in conjunction with the device in Part A and is connected to the sample tube in Part A. Part (9) is a three-way valve, which is connected to the sample tube at the bottom and is equipped with a pH value detection probe (16) that can contact the solution in the sample tube. The probe is connected to the display device (11). The top of (9) is connected to a funnel (8) for dripping liquid reagents. The right side is a rubber hose (10) connected to the gas collection tube. (12) is a gas tube for collecting gas production. Three probes are installed on the top of the gas tube, namely a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the volume of gas produced and the duration of gas production. The three probes are connected to the display device (11) respectively to directly obtain the degree. Four similar devices correspond to four sample tubes.

[0153] The specific steps of the detection method described in this embodiment are:

[0154] (1) Prepare the experimental group baking powder samples and blank group baking powder samples required for testing:

[0155] The mass of each component of the baking powder sample in the experimental group is:

[0156] Experimental group 9 (frozen type III baking powder): sodium bicarbonate 0.5 g, phosphate 0.56 g, glucono-δ-lactone 0.02 g, citric acid 0.02 g, calcium carbonate 0.01 g, calcium sulfate 0.01 g, salt 0.02 g, corn starch 0.86 g;

[0157] Experimental group 10 (frozen IV baking powder): sodium bicarbonate 0.7 g, phosphate 0.4 g, glucono-δ-lactone 0.04 g, citric acid 0.04 g, calcium carbonate 0.02 g, calcium sulfate 0.02 g, salt 0.02 g, corn starch 0.76 g;

[0158] Experimental group 11 (compound type VII baking powder): sodium bicarbonate 0.5g, phosphate 0.04g, glucono-δ-lactone 0.04g, citric acid 0.04g, calcium carbonate 0.28g, calcium sulfate 0.28g, salt 0.02g, corn starch 0.84g;

[0159] Experimental group 12 (compound type VIII baking powder): sodium bicarbonate 0.6g, phosphate 0.6g, glucono-δ-lactone 0.02g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.72g;

[0160] The mass of each component of the blank baking powder sample is:

[0161] Blank group 9 (frozen type III baking powder) (sodium bicarbonate removed): phosphate 0.56 g, glucono-δ-lactone 0.02 g, citric acid 0.02 g, calcium carbonate 0.01 g, calcium sulfate 0.01 g, salt 0.02 g, corn starch 0.86 g;

[0162] Blank group 10 (frozen IV baking powder) (sodium bicarbonate removed): phosphate 0.4 g, glucono-δ-lactone 0.04 g, citric acid 0.04 g, calcium carbonate 0.02 g, calcium sulfate 0.02 g, salt 0.02 g, corn starch 0.76 g;

[0163] Blank group 11 (compound VII type baking powder) (sodium bicarbonate removed): phosphate 0.04g, glucono-δ-lactone 0.04g, citric acid 0.04g, calcium carbonate 0.28g, calcium sulfate 0.28g, salt 0.02g, corn starch 0.84g;

[0164] Blank group 12 (compound type VIII baking powder) (sodium bicarbonate removed): phosphate 0.6 g, glucono-δ-lactone 0.02 g, citric acid 0.02 g, calcium carbonate 0.01 g, calcium sulfate 0.01 g, salt 0.02 g, corn starch 0.72 g;

[0165] (2) Add 2 g of baking powder from four different types of experimental groups into the sample tubes in the baking powder gas production reactor, and then place the sample tubes in the holes of the water bath reaction box using a handheld sampler. Set the water temperature of the water bath reaction box to 85°C and keep the temperature constant;

[0166] (3) Connect the placed experimental group sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90°C) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure, gas volume, gas production duration, and pH value of the aqueous solution in the gas collection tube respectively: T1, P1, V1, t1, PH1;

[0167] (4) 1.5 g, 1.3 g, 1.5 g, and 1.4 g of four different types of blank baking powder were added to the sample tube in the baking powder gas production reactor, and then the sample tube was placed in the hole of the water bath reaction box using a handheld sampler. The water temperature of the water bath reaction box was set to 85°C and maintained at a constant temperature;

[0168] (5) Connect the placed blank sample tube to the three-way valve in the baking powder gas collector, add 120 g of heated deionized water (above 90° C.) into the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure and gas volume generated in the gas collection tube respectively: T0, P0, V0;

[0169] (6) The gas production is calculated using the formula.

[0170] The calculation process of the formula is as follows: The amount of carbon dioxide gas generated is measured by the volume A of carbon dioxide generated per gram of sample under standard conditions, in milliliters per gram (mL / g), and the calculation is publically shown as:

[0171]

[0172] A=A1-A0

[0173] The gas production of the experimental group is (A1) (mL / g)

[0174] The gas production of the blank group is (A0) (mL / g)

[0175] V1: gas production volume of the experimental group, in mL;

[0176] P1: pressure of the experimental group, in kPa;

[0177] T1: temperature of the experimental group, in K;

[0178] m1: mass of the experimental group, in g;

[0179] V0: gas production volume of the blank group, in mL;

[0180] P0: pressure of the blank group, in kPa;

[0181] T0: temperature of the blank group, in K;

[0182] m0: mass of blank group, unit: g;

[0183] 101.3: atmospheric pressure under standard conditions, in kPa;

[0184] The temperature, pressure, gas volume, gas production duration, aqueous solution pH value and gas production data of the above 4 experimental groups and 4 blank groups are shown in Table 6:

[0185] Table 6

[0186]

[0187] Under the same conditions, parallel tests were conducted to enhance the accuracy of the results. The test results are shown in Table 7:

[0188] Table 7

[0189]

[0190] It can be seen from the above embodiments that the detection method of the present invention has achieved unexpected technical effects, and its technical effects are as follows:

[0191] 1. The method and device provided by this patent can quickly detect multiple samples, which improves efficiency compared to other public detection methods that can only detect a single sample.

[0192] 2. The method and device provided by this patent have advantages in detecting the gas production index of baking powder, and the data is more accurate. Hot water is used instead of hydrochloric acid to react with baking powder to produce carbon dioxide, which is collected, which is close to the gas production of baking powder in actual application, thereby improving the accuracy of the data. In addition, raw materials and auxiliary materials other than sodium bicarbonate will also react with hydrochloric acid, resulting in a test result that is larger than the gas production of the actual baking powder itself. Other methods on the market and the national standard GB 1886.245 do not set up a blank group, and do not remove this part of the impact. This patent sets up a blank group to effectively remove the impact of the blank group on the gas production of baking powder, further improving the accuracy of the data.

[0193] 3. Using the method and device provided by this patent, the data deviation between the parallel test group and the blank group of the gas production of baking powder is very small, not exceeding 2mL / g, which is better than other detection methods. Compared with the national standard GB 1886.245 of no more than 3mL / g, its accuracy has been improved, which fully demonstrates its accuracy.

[0194] 4. The method and device provided by this patent can simultaneously detect the three main quality indicators of baking powder, not only the gas production, but also the duration of gas production and the pH value of the aqueous solution, which can provide more comprehensive and timely feedback on the quality and performance of baking powder, which is better than the methods and devices on the market that can only detect one sample and one indicator at a time. And the strength of the baking powder performance can be determined by the above indicators, which improves the detection efficiency, can detect product quality more quickly, and serve industrial production.

[0195] 5. The detection device of the present invention has been optimized and designed to be not only more compact and easy to operate, but also incorporates an advanced electronic heating system to ensure accurate control of experimental conditions. Direct real-time monitoring of temperature, pressure and gas flow reduces errors caused by environmental fluctuations or human operation, and improves the accuracy and reliability of detection data. In addition, the compact structural design reduces space occupancy and facilitates the layout of laboratories or production lines.

[0196] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A rapid detection method for quality indicators of aluminum-free baking powder, characterized in that: The following steps are involved: (1) preparing baking powder samples of the experimental group and the baking powder samples of the blank group required for testing; (2) adding the baking powder sample of the experimental group into the sample tube in the baking powder gas production reactor, and then placing the sample tube into the hole of the water bath reaction box with a handheld sampler, setting the water temperature of the water bath reaction box, and maintaining a constant temperature; (3) Connect the placed experimental group sample tube to the three-way valve in the baking powder gas collector, add heated deionized water (above 90°C) to the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas into the gas collection tube in the baking powder gas collector, and read the temperature, pressure, gas volume, gas production duration and pH value of the aqueous solution in the gas collection tube: T1, P1, V1, t1, PH1; (4) adding a blank baking powder sample into a sample tube in a baking powder gas generating reactor, and then placing the sample tube into a hole of a water bath reaction box using a handheld sampler, setting the water temperature of the water bath reaction box, and maintaining a constant temperature; (5) Connect the placed blank sample tube to the three-way valve in the baking powder gas collector, add heated deionized water (above 90°C) to the sample tube, adjust the three-way valve to connect the sample tube to the hose, collect the gas to the gas collection tube in the baking powder gas collector, and read the temperature, pressure, and gas volume generated in the gas collection tube: T0, P0, V0 respectively; (6) The gas production A is calculated by the formula.

2. The method according to claim 1, characterized in that The ingredients of the baking powder sample of the experimental group in the step (1) include: sodium bicarbonate, phosphate, glucono-δ-lactone, citric acid, calcium carbonate, calcium sulfate, salt, and corn starch; the ingredients of the baking powder sample of the blank group include: phosphate, glucono-δ-lactone, citric acid, calcium carbonate, calcium sulfate, salt, and corn starch.

3. The method according to claims 1-2, characterized in that: In the step (2), the weight ratio of the baking powder sample to the deionized water is (1-2):(60-120).

4. The method according to claims 1-2, characterized in that: The water bath temperature in step (2) is 80-90°C.

5. The method according to claims 1-2, characterized in that: In step (6), the calculation process of the formula is as follows: the amount of carbon dioxide gas generated is measured by the volume A of carbon dioxide generated per gram of sample under standard conditions, in milliliters per gram (mL / g), and the calculation is expressed as: A=A1-A0 The gas production of the experimental group is (A1) (mL / g) The gas production of the blank group is (A0) (mL / g) V1: gas production volume of the experimental group, in mL; P1: pressure of the experimental group, in kPa; T1: temperature of the experimental group, in K; m1: mass of the experimental group, in g; V0: gas production volume of the blank group, in mL; P0: pressure of the blank group, in kPa; T0: temperature of the blank group, in K; m0: mass of blank group, unit: g; 101.3: atmospheric pressure under standard conditions, in kPa; 6. A rapid detection method and combined device for quality indicators of aluminum-free baking powder, characterized in that the device consists of a water bath reaction box (Part A), a handheld sampler (Part B), a sample tube placement rack (Part C), and a baking powder gas collection device (Part D).

7. The device according to claim 6, characterized in that Part A is a water bath reaction box, which can be filled with water and has a serpentine heating tube (2) connected to a temperature control device (3) to heat the water to a set temperature. A hole (1) is provided on the top of the box for placing a sample tube. This part is connected to the sample tube in part C through the sampler in part B.

8. The device according to claim 6, characterized in that Part B is a handheld sampler for inserting the sample tube, which is connected to the sample tube in part C. Insert the (5) component into the sample tube (in part C) filled with the sample, then insert the sample tube into the sample tube hole in part A, and then press the (4) buckle device and move the (6) push ring to place the sample tube in part A to achieve rapid sampling.

9. The device according to claim 6, characterized in that Part C is a sample tube placement rack that matches Part B and has four sample tubes (7) inserted therein. It is combined with the handheld device of Part B so that the sample tubes can be placed into the sockets of the water bath reaction box of Part A to complete the sample placement step. In addition, water and samples need to be added to the sample tubes in this step.

10. The device according to claim 6, characterized in that Part D is a device for collecting gas produced by baking powder, which is used in conjunction with the device in Part A and is connected to the sample tube in Part A. (9) is a three-way valve, which is connected to the sample tube at the bottom and is equipped with a pH detection probe (16) that can contact the solution in the sample tube. The probe is connected to the display device (11). The top of (9) is connected to a funnel (8) for dripping liquid reagents. The right side is a rubber hose (10) connected to the gas collection pipe. (12) is a gas pipe for collecting gas production. Three probes are installed on the top of the gas pipe, namely a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the volume of gas produced and the duration of gas production. The three probes are connected to the display device (11) respectively to directly obtain the degree. Four similar devices correspond to four sample tubes.

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