A rapid detection method and combined device for quality indicators of aluminum-free baking powder

Abstract

The application discloses a kind of quick detection method and combination device of aluminum-free baking powder quality index, belong to the field of food additives.The specific steps are as follows: the experimental group baking powder sample and blank group baking powder sample needed for detection are prepared;Experimental group baking powder sample is placed in water bath reaction box and constant temperature water bath reaction is carried out;Heated deionized water (above 90 DEG C) is added to the experimental group sample tube after water bath, gas is collected, and parameters are read;Blank group baking powder sample is placed in water bath reaction box and constant temperature water bath reaction is carried out;Heated deionized water (above 90 DEG C) is added to the blank group sample tube after water bath, gas is collected, and parameters are read;Gas production index of baking powder is obtained by formula calculation, and baking powder gas production duration, PH value of baking powder after water solution are obtained by reading parameters, and a total of three quality indexes are obtained.In addition, the application provides a kind of combination device for quickly detecting baking powder quality index (gas production, gas production duration, water solution PH value), which is composed of water bath reaction box (part A), handheld sampler (part B), sample tube rack (part C) and baking powder gas collection device (part D).The application provides a method capable of detecting multiple samples at a time, improves detection efficiency and accuracy, and integrates the detection device.

Description

TECHNICAL FIELD

[0001] The application relates to the field of food additive detection, in particular to a rapid detection method and a combined device for quality indexes of aluminum-free baking powder. BACKGROUND

[0002] Baking powder, also known as compound leavening agent, is a food additive. When added to rice flour products, baking powder can make the rice flour products porous, soft and crisp, easy to chew, increase nutrition, easy to digest and absorb, and present special flavor, thereby improving the quality of the food. The baking powder detected by the method has the following composition limits: sodium bicarbonate, phosphate, glucono-delta-lactone, citric acid, calcium carbonate, calcium sulfate, salt and corn starch. All the raw materials are powder raw materials. The above raw materials are compounded and combined in different proportions according to the gas production rate and gas production to achieve different product varieties to meet customer needs. These raw materials are suitable for multiple types of food in food processing, have high safety performance, and are conducive to the development of food additive products towards health and safety. The main production steps of baking powder products are: sieving, weighing, mixing, gold detection and packaging. The main principle of baking powder for gas production in food is that after baking powder meets water, the acid salt (phosphate, glucono-delta-lactone, citric acid) in the composition reacts with the alkali salt (sodium bicarbonate) to produce edible carbon dioxide gas, thereby making the product porous, especially playing a crucial role in the production and processing of rice flour products, and promoting the development of the food industry.

[0003] At present, the popular new aluminum-free baking powder on the market meets the needs of consumers for safe and healthy food raw materials and meets the development trend of food safety and dietary health because it does not contain aluminum, potassium hydrogen tartrate and other ingredients. The market share of rice flour products such as steamed buns, dim sum, fried foods and other breakfast products in China has reached more than 10 billion yuan, 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 flour products, which has a broad prospect. While pursuing safety and health, the quality requirements for aluminum-free baking powder are also increasing, and the gas production as an important indicator of the product is also very concerned by consumers, and the baking powder manufacturers also pay great attention to the control of this quality indicator.

[0004] The prior art CN202321268348 discloses a leavening powder gas production detection device, which has more than 50 components, is complex in structure, needs to be specially customized for enterprise detection, increases cost, can only detect one sample at a time, cannot adapt to the detection of multiple batches of samples, has many components, is not complete in arrangement, is not suitable for rapid detection requirements, is not a complete leavening powder gas production detection device, does not involve cooperation and connection with the gas production device, cannot improve the matching of the detection device, cannot track the corresponding pipes respectively, and cannot really improve the accuracy of detection.

[0005] In recent years, with the enhancement of food safety awareness and the increasing strictness of regulations, the demand for precise detection of food additives such as leavening powder is increasingly urgent. Currently, leavening powder, as a kind of compounded 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 use of leavening powder are also changing, and higher requirements are put forward for detection technology. The current leavening powder gas production device has the shortcomings of complicated detection device components, not close enough connection, many manual operation errors, low detection sample efficiency, and defects in detection principle. Therefore, developing more efficient, accurate and convenient leavening powder detection technology has become an important research direction in the field of food additive detection. This will help further improve food safety and protect the health rights and interests of consumers. SUMMARY

[0006] The gas production (carbon dioxide), gas production duration, and PH value of the aqueous solution of baking powder are basic indexes for reflecting the performance of the baking powder. The more gas produced by the same amount of baking powder product, the better the performance of the baking powder; the longer the gas production duration of the baking powder, the better the application effect of the baking powder; and the PH value of the aqueous solution of the baking powder will affect the application effect of the baking powder, and too high or too low PH value will result in poor taste of the product, so the detection of the three indexes is a basic means for monitoring the quality of the baking powder product. Production enterprises usually produce a large number of formula types and batches, and a method for rapidly detecting the quality indexes of the baking powder can meet the demand. The basic principle of the current detection method for the gas production of the baking powder is to disperse the baking powder with warm water, add strong acid (such as hydrochloric acid), and react with the basic salt (sodium bicarbonate) in the baking powder to produce carbon dioxide, which is collected. These methods and devices have the following disadvantages: the detection device has complicated components, the connection is not close enough, the manual operation error is large, and the detection sample efficiency is low; the reaction with hydrochloric acid deviates from the actual application because aluminum-free baking powder generally contains calcium carbonate, calcium sulfate and other auxiliary materials, and these auxiliary materials will not react in actual application, so the result will be larger if hydrochloric acid is used for detection. And the current method for detecting the quality indexes of the baking powder can only detect one sample and one index at a time, and the efficiency is too low. The present application provides a method and device for rapidly detecting the quality indexes of the baking powder, which can not only detect the gas production, but also simultaneously detect the gas production duration and the PH value of the aqueous solution, can comprehensively and timely feedback the quality and performance of the baking powder, and can detect multiple samples at a time, improve the detection method, integrate the detection device, and improve the efficiency. The specific technical scheme of the present application is as follows:

[0007] The present application provides a method for rapidly detecting the quality indexes of aluminum-free baking powder, characterized in that it comprises the following steps:

[0008] (1) preparing experimental group baking powder samples and blank group baking powder samples needed for detection;

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

[0010] (3) connecting the placed experimental group sample tube with the three-way valve in the baking powder gas production collector, adding heated deionized water (above 90 DEG C) into the sample tube, adjusting the three-way valve to connect the sample tube with the rubber tube, collecting the gas into the gas collecting tube in the baking powder gas production collector, and reading the temperature, pressure, gas volume, gas production duration, and PH value of the aqueous solution in the gas collecting tube as T1, P1, V1, t1, and PH1 respectively;

[0011] (4) The blank group of leavening powder sample is added into the sample tube in the leavening powder gas production reactor, and then the sample tube is placed in the hole of the water bath reaction box by using the hand-held sample placing device, the water temperature of the water bath reaction box is set, and the temperature is kept constant;

[0012] (5) The sample tube of the blank group is connected with the three-way valve in the leavening powder gas production collector, heated deionized water (above 90℃) is added into the sample tube, the three-way valve is adjusted to connect the sample tube with the rubber tube, the gas is collected into the gas collecting tube in the leavening powder gas production collector, and the temperature, pressure and gas volume in the gas collecting tube are read as T0, P0 and V0 respectively;

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

[0014] Further, the components of the leavening powder sample in step (1) include sodium bicarbonate, phosphate, glucono-delta-lactone, citric acid, calcium carbonate, calcium sulfate, salt and corn starch.

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

[0016] Further, the water bath temperature in step (2) is 80-90℃.

[0017] Further, in step (6), the formula calculation process is as follows: the carbon dioxide gas production amount is calculated as the carbon dioxide volume A per milliliter of sample under standard state, and the unit is milliliter per gram (mL / g).

[0018]

[0019] A=A1-A0

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

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

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

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

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

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

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

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

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

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

[0030] 101.3: atmospheric pressure under standard state, unit: kPa;

[0031] 273: temperature under standard state, unit: K;

[0032] The application also provides a combined device for rapidly detecting quality indexes of aluminum-free baking powder, which is divided into four parts, namely, a water bath reaction box (part A), a handheld sampler (part B), a sample tube rack (part C), and a baking powder gas production collection device (part D).

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

[0034] Further, part A is a water bath reaction box, which can be filled with water and has a coiled heating tube (2) connected to a temperature control device (3) to heat the water to a set temperature, and a hole (1) in the upper part of the box for placing a sample tube.

[0035] Further, part B is a handheld sampler for inserting a sample tube, which is connected to the sample tube in part C. The (5) component is inserted into the sample tube (in part C) containing the sample, and then the sample tube is inserted into the sample tube hole in part A.

[0036] Further, part C is a sample tube rack for cooperating with part B, which has four sample tubes (7) inserted. The handheld device in part B is combined to place the sample tube into the insertion hole of the water bath reaction box in part A to complete the sample placing step.

[0037] Further, part D is a leavening agent gas collection device, used with part A device, connected with part A sample tube. Wherein (9) is a three-way valve, connected with sample tube below, with PH detection probe (16), which can contact with sample tube solution, the probe is connected with (11) display device, (9) is connected with funnel (8) for adding liquid reagent above, right side is connected with gas collection tube (10), (12) is gas collection tube, with three probes on top, temperature detection probe (13), pressure detection probe (14) and gas flow probe (15), the gas flow probe can detect gas volume and gas duration, the three probes are connected with (11) display device, can directly obtain degrees, four similar devices correspond to four sample tubes.

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

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

[0040] (2) The detection device of the present application is optimized in design, not only more compact in structure and easy to operate, but also integrated with advanced electronic heating system, ensuring accurate control of experimental conditions. Directly monitor temperature, pressure, gas flow, gas production duration, and aqueous solution PH value in real time, reduce errors caused by environmental fluctuations or human operation, improve the accuracy and reliability of detection data. In addition, the compact structure design reduces space occupation, facilitating laboratory or production line layout.

[0041] (3) The device of the present application is built-in with advanced sensors and data processing system, which can directly read and display temperature, pressure, gas flow, gas production duration, and aqueous solution PH value, etc. Key parameters can directly judge the quality performance of aluminum-free baking powder, without additional detection test, greatly improving the efficiency, and saving the tedious table checking step in traditional method. This improvement not only improves the detection efficiency, but also reduces the requirement for professional skills of operators, so that non-professionals can quickly start the experiment operation, promoting the popularization and application of technology.

[0042] (4) The detection method of the present application aims at the defect of the current common detection method of baking powder gas production, that is, adding strong acid to detect the gas production of carbon dioxide by completely reacting sodium bicarbonate. The present application adds a blank group, that is, a standard sample, which 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 detection results of the experimental group and the blank group, the gas production contribution of sodium bicarbonate can be more accurately separated, the interference of other factors is effectively excluded, and the accuracy and reliability of the detection are significantly improved.

[0043] (5) The present application increases the standard sample blank group, which significantly improves the detection accuracy without increasing additional detection steps. This design ingeniously uses existing resources, avoids the cumbersome process of setting up a blank group for blank in the traditional method, and further simplifies the detection process. At the same time, since unnecessary operation steps and time consumption are reduced, the overall detection efficiency is further improved, which helps to speed up the product development cycle and reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 Structure diagram of water bath reaction box (A part)

[0045] Figure 2 Structure diagram of handheld sampler (B part)

[0046] Figure 3 Structure diagram of sample tube rack (C part)

[0047] Figure 4 Structure diagram of baking powder gas collection device (D part)

[0048] Figure 5 Structure diagram of gas pipe of baking powder gas collection device (D part) for collecting gas

[0049] Figure 6 Flow chart of the rapid detection method of baking powder gas production amount DETAILED DESCRIPTION

[0050] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0051] Embodiments

[0052] The specific embodiments of the present application are further described below. It is to be understood that the description of these embodiments is intended to help understand the present application and is not intended to limit the present application. Furthermore, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0053] The test materials used in the following examples are commercially available unless otherwise specified.

[0054] Table 1 is a product quality index performance table prepared according to the actual application of baking powder, which can be used to determine the performance of each index of baking powder. Through the three quality indexes, the comprehensive performance index of baking powder can be determined. The determination rules are as follows: if two or more of the three indexes are strong, the comprehensive performance is strong; if two or more of the three indexes are weak, the comprehensive performance is weak; otherwise, the comprehensive performance is determined to be medium.

[0055] Table 1

[0056]

[0057] Example 1

[0058] This embodiment uses a combination device for quickly detecting the quality indexes of aluminum-free baking powder. The device is divided into four parts, which are a water bath reaction box (part A), a handheld sampler (part B), a sample tube rack (part C), and a baking powder gas production collection device (part D).

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

[0060] Part A is a water bath reaction box that can be filled with water and has a coiled heating tube (2) that can be connected to a temperature control device (3) to heat the water to a set temperature. The upper part of the box has a hole (1) 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 a sample tube, which is connected to the sample tube in part C. The (5) component is inserted into the sample tube (in part C) containing the sample, and then the sample tube is inserted into the sample tube hole in part A. Then, by pressing the (4) pressure buckle device and moving the (6) push ring, the sample tube is placed in part A, achieving rapid sample placement.

[0062] Wherein, C part is the sample tube rack matched with part B, 4 sample tubes (7) are inserted, and the handheld device of part B is combined so as to place the sample tube into the insertion hole of the water bath reaction box of part A, the sample placing step is completed, and water and samples need to be added in the sample tube in this step.

[0063] Wherein, D part is the baking powder gas production collecting device matched with part A, and connected with the sample tube of part A. Wherein, (9) is a three-way valve, connected with the sample tube below and provided with a PH value detection probe (16) capable of contacting with the solution of the sample tube, the probe is connected with the display device (11), the upper part of (9) is connected with the funnel (8) for dropping liquid reagent, the right side is connected with the rubber tube (10) for connecting with the gas collecting tube, and (12) is the gas collecting tube for collecting the gas production, provided with three probes at the top of the gas collecting tube, i.e. 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 gas production duration, and the three probes are connected with the display device (11) respectively, so as to directly obtain the degree, and 4 similar devices correspond to 4 sample tubes.

[0064] The specific steps of the detection method are as follows:

[0065] (1) Preparation of the experimental group baking powder sample and the blank group baking powder sample required for detection:

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

[0067] Experimental group 1 (frozen type 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, and corn starch 0.88g;

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

[0069] Experimental group 3 (high-quality type 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, and corn starch 0.84g;

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

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

[0072] Blank group 1 (frozen leavening powder) (remove sodium bicarbonate): phosphate 0.1 g, glucono-delta-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 leavening powder) (remove sodium bicarbonate): phosphate 0.3 g, glucono-delta-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 leavening powder) (remove sodium bicarbonate): phosphate 0.1 g, glucono-delta-lactone 0.4 g, citric acid 0.04 g, calcium carbonate 0.02 g, calcium sulfate 0.02 g, salt 0.02 g, corn starch 0.84 g;

[0075] Blank group 4 (high-efficiency leavening powder) (remove sodium bicarbonate): phosphate 0.4 g, glucono-delta-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;

[0076] (2) 2 g of the experimental group leavening powder of 4 different types was added to the sample tube in the leavening powder gas production reactor, and then the sample tube was placed in the hole of the water bath reaction box using the handheld sample placing device. The water temperature of the water bath reaction box was set to 85°C and kept constant;

[0077] (3) The experimental group sample tube was connected to the three-way valve in the leavening powder gas production collector, 120 g of heated deionized water (above 90°C) was added to the sample tube, the three-way valve was adjusted to connect the sample tube to the rubber tube, and the gas was collected in the gas collection tube in the leavening powder gas production collector. The temperature, pressure, and gas volume produced in the gas collection tube were read respectively, and the duration of gas production and the PH value of the aqueous solution were respectively T1, P1, V1, t1, PH1;

[0078] (4) 1.5 g, 1.4 g, 1.44 g, and 1.4 g of the blank group leavening powder of 4 different types was added to the sample tube in the leavening powder gas production reactor, and then the sample tube was placed in the hole of the water bath reaction box using the handheld sample placing device. The water temperature of the water bath reaction box was set to 85°C and kept constant;

[0079] (5) The blank sample tube is placed in the three-way valve of the baking powder gas collector, and 120 g of heated deionized water (above 90°C) is added to the sample tube. The three-way valve is adjusted to connect the sample tube to the rubber tube, and the gas is collected in the gas collection tube in the baking powder gas collector. The temperature, pressure, and gas volume in the gas collection tube are read as T0, P0, and V0, respectively.

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

[0081] The formula calculation process is as follows: the carbon dioxide gas production is calculated as the volume of carbon dioxide produced per gram of sample under standard conditions A, with the unit of milliliters per gram (mL / g). The calculation formula is:

[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: The gas production volume of the experimental group, with the unit of mL;

[0087] P1: The pressure of the experimental group, with the unit of kPa;

[0088] T1: The temperature of the experimental group, with the unit of K;

[0089] m1: The mass of the experimental group, with the unit of g;

[0090] V0: The gas production volume of the blank group, with the unit of mL;

[0091] P0: The pressure of the blank group, with the unit of kPa;

[0092] T0: The temperature of the blank group, with the unit of K;

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

[0094] 101.3: The atmospheric pressure under standard conditions, with the unit of kPa;

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

[0096] Table 2

[0097]

[0098] Parallel experiments were conducted under the same conditions to enhance the accuracy of the results, and the experimental results are shown in Table 3:

[0099] Table 3

[0100]

[0101] Example 2

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

[0103] The device of the present application is composed of a water bath reaction box (part A), a handheld sampler (part B), a sample tube holder (part C), and a baking powder gas production collection device (part D).

[0104] Part A is a water bath reaction box that can be filled with water and has a coiled heating tube (2) that can be connected to a temperature control device (3) to heat the water to a set temperature. The upper part of the box has a hole (1) for inserting 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 a sample tube, which is connected to the sample tube in part C. The (5) component is inserted into the sample tube containing the sample (in part C), and then the sample tube is inserted into the sample tube hole in part A. By pressing the (4) pressure buckle device and moving the (6) push ring, the sample tube is placed in part A, achieving rapid sample placement.

[0106] Part C is a sample tube holder that matches part B and has four sample tubes (7) inserted. The handheld device in part B is combined to place the sample tube into the insertion hole of the water bath reaction box in part A, completing the sample placement step. In this step, water and sample need to be added to the sample tube.

[0107] Wherein, D part is the bubble powder gas collection device, with A part device use, with A part of the sample tube connection. Wherein (9) is a three-way valve, below with sample tube connection, and with PH value detection probe (16), can with sample tube solution contact, the probe and (11) display device connection, (9) above with drop liquid reagent funnel (8), right side is with the gas collecting tube connection rubber tube (10), (12) collect gas production gas pipe, in the gas pipe top is equipped with three probes, temperature detection probe (13), pressure detection probe (14), gas flow probe (15), gas flow probe can detect gas volume and gas duration, three probes are connected with (11) display device respectively, can directly obtain degree, 4 similar device corresponds 4 sample tube.

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

[0109] (1) Preparation of the experimental group bubble powder sample and the blank group bubble powder sample required for detection:

[0110] The mass of each component of the experimental group bubble powder sample is as follows:

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

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

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

[0114] Experimental group 8 (roast pork bun II type bubble powder): sodium bicarbonate 0.5 g, phosphate 0.44 g, glucono-delta-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 0.98 g;

[0115] The mass of each component of the blank group bubble powder sample is as follows:

[0116] Blank group 5 (ordinary type of baking powder) (remove sodium bicarbonate): phosphate 0.04g, gluconic acid-delta-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 type of baking powder) (remove sodium bicarbonate): phosphate 0.5g, gluconic acid-delta-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 (roast pork bun type of baking powder) (remove sodium bicarbonate): phosphate 0.04g, gluconic acid-delta-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 (roast pork bun II type of baking powder) (remove sodium bicarbonate): phosphate 0.44g, gluconic acid-delta-lactone 0.02g, citric acid 0.02g, calcium carbonate 0.01g, calcium sulfate 0.01g, salt 0.02g, corn starch 0.98g;

[0120] (2) 2g of the experimental group baking powder of 4 different types was 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 the handheld sample placing device. The water temperature of the water bath reaction box was set to 85℃ and kept constant;

[0121] (3) The sample tube was connected to the three-way valve in the baking powder gas production collector, 120g of heated deionized water (above 90℃) was added to the sample tube, and the three-way valve was adjusted to connect the sample tube to the rubber tube. The gas was collected in the gas collection tube in the baking powder gas production collector. The temperature, pressure, and gas volume in the gas collection tube were read as T1, P1, and V1, respectively. The duration of gas production and the PH value of the aqueous solution were t1 and PH1, respectively.

[0122] (4) 1.5g, 1.4g, 1.44g, and 1.5g of the blank group baking powder of 4 different types was 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 the handheld sample placing device. The water temperature of the water bath reaction box was set to 85℃ and kept constant;

[0123] (5) The sample tube was connected to the three-way valve in the baking powder gas production collector, 120g of heated deionized water (above 90℃) was added to the sample tube, and the three-way valve was adjusted to connect the sample tube to the rubber tube. The gas was collected in the gas collection tube in the baking powder gas production collector. The temperature, pressure, and gas volume in the gas collection tube were read as T0, P0, and V0, respectively.

[0124] (6) Calculate the gas production by formula.

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

[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: The gas production volume of the experimental group, in mL;

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

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

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

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

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

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

[0137] m0: The mass of the blank group, in g;

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

[0139] The temperature, pressure, gas volume produced, gas production duration, water 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] Parallel tests were conducted under the same conditions to enhance the accuracy of the results, and the test results are shown in Table 5:

[0143] Table 5

[0144]

[0145]

[0146] Example 3

[0147] This embodiment uses a combination 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 holder (part C), and a baking powder gas production collection device (part D).

[0148] The device is composed of a water bath reaction box (part A), a handheld sampler (part B), a sample tube holder (part C), and a baking powder gas production collection device (part D).

[0149] Part A is a water bath reaction box that can hold water and has a coiled heating tube (2) that can be connected to a temperature control device (3) to heat the water to a set temperature. The upper part of the box has a hole (1) for inserting 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 a sample tube. This part is connected to the sample tube in part C. The (5) component is inserted into the sample tube containing the sample in part C, and then the sample tube is inserted into the sample tube hole in part A. By pressing the (4) pressure buckle device and moving the (6) push ring, the sample tube is placed in part A, achieving rapid sample placement.

[0151] Part C is a sample tube holder that matches part B and has four sample tubes (7). It is combined with the handheld device in part B to place the sample tube into the insertion hole of the water bath reaction box in part A, completing the sample placement step. In this step, water and sample need to be added to the sample tube.

[0152] Part D is a baking powder gas production collection device that matches part A and is connected to the sample tube in part A. (9) is a three-way valve connected to the sample tube below and has a pH detection probe (16) that can contact the sample tube solution. The probe is connected to the (11) display device. The top of (9) is connected to the funnel (8) for adding liquid reagents, and the right side is connected to the rubber tube (10) for collecting gas. (12) is the gas collection tube, which has three probes at the top: a temperature detection probe (13), a pressure detection probe (14), and a gas flow probe (15). The gas flow probe can detect the volume and duration of gas production. The three probes are connected to the (11) display device to directly obtain the readings. Four similar devices correspond to four sample tubes.

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

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

[0155] The quality of each component of the experimental group of baking powder samples was:

[0156] Experimental group 9 (frozen type III baking powder): sodium bicarbonate 0.5 g, phosphate 0.56 g, glucono-delta-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 type IV baking powder): sodium bicarbonate 0.7 g, phosphate 0.4 g, glucono-delta-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 (complex type VII baking powder): sodium bicarbonate 0.5 g, phosphate 0.04 g, glucono-delta-lactone 0.04 g, citric acid 0.04 g, calcium carbonate 0.28 g, calcium sulfate 0.28 g, salt 0.02 g, corn starch 0.84 g;

[0159] Experimental group 12 (complex type VIII baking powder): sodium bicarbonate 0.6 g, phosphate 0.6 g, glucono-delta-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;

[0160] The quality of each component of the experimental group of baking powder samples was:

[0161] Blank group 9 (frozen type III baking powder) (sodium bicarbonate removed): phosphate 0.56 g, glucono-delta-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 type IV baking powder) (sodium bicarbonate removed): phosphate 0.4 g, glucono-delta-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 (complex type VII baking powder) (sodium bicarbonate removed): phosphate 0.04 g, glucono-delta-lactone 0.04 g, citric acid 0.04 g, calcium carbonate 0.28 g, calcium sulfate 0.28 g, salt 0.02 g, corn starch 0.84 g;

[0164] Blank group 12 (complex type VIII baking powder) (remove sodium bicarbonate): phosphate 0.6 g, gluconic acid-delta-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) 2 g of the experimental group baking powder of four different types was 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 the handheld sample placing device, the water temperature of the water bath reaction box was set to 85°C, and the temperature was kept constant;

[0166] (3) The sample tube was connected to the three-way valve in the baking powder gas production collector, 120 g of heated deionized water (above 90°C) was added to the sample tube, the three-way valve was adjusted to connect the sample tube to the rubber tube, and the gas was collected in the gas collection tube in the baking powder gas production collector. The temperature, pressure, and gas volume produced in the gas collection tube were read as T1, P1, V1, t1, and PH1, respectively.

[0167] (4) 1.5 g, 1.3 g, 1.5 g, and 1.4 g of the blank group baking powder of four different types was 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 the handheld sample placing device, the water temperature of the water bath reaction box was set to 85°C, and the temperature was kept constant;

[0168] (5) The sample tube was connected to the three-way valve in the baking powder gas production collector, 120 g of heated deionized water (above 90°C) was added to the sample tube, the three-way valve was adjusted to connect the sample tube to the rubber tube, and the gas was collected in the gas collection tube in the baking powder gas production collector. The temperature, pressure, and gas volume produced in the gas collection tube were read as T0, P0, and V0, respectively.

[0169] (6) The gas production was calculated by the formula.

[0170] The formula calculation process is as follows: the carbon dioxide gas production is calculated as the volume of carbon dioxide produced per liter of sample under standard conditions A, with the unit being milliliters per gram (mL / g), and the calculation formula is:

[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: the gas production volume of the experimental group, with the unit being mL;

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

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

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

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

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

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

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

[0183] 101.3: atmospheric pressure under standard state, unit: kPa;

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

[0185] Table 6

[0186]

[0187] Parallel tests were made under the same conditions to enhance the accuracy of the results, and the test results are shown in Table 7:

[0188] Table 7

[0189]

[0190] From the above examples, it can be seen that the detection method described in the application achieves unexpected technical effects, and the technical effects are as follows:

[0191] 1. The method and device provided by the patent can quickly detect multiple samples, and compared with other disclosed detection methods which can only detect a single sample, the efficiency is improved.

[0192] 2. The method and device provided by the 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 and close to the actual application of baking powder, improving the accuracy of the data. In addition, in addition to sodium bicarbonate, raw and auxiliary materials will also react with hydrochloric acid, causing the test result to be larger than the actual gas production of the 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 the influence of this part. The patent sets up a blank group to effectively remove the influence of the blank group on the gas production of baking powder, further improving the accuracy of the data.

[0193] 3. The method and device provided by the patent have very small data deviation between the parallel test groups and the blank group of the measured gas production of baking powder, not more than 2 mL / g, which is better than other detection methods. Compared with the national standard GB 1886.245, the precision is improved, and the accuracy is fully demonstrated.

[0194] 4. The method and device provided by the patent can detect three main quality indicators of baking powder at the same time, not only the gas production, but also the gas production duration and the PH value of the aqueous solution, which can comprehensively and timely feedback the quality and performance of the baking powder, which is better than the method and device on the market which can only detect one sample and one indicator at a time. And through the above indicators, the strength of the baking powder performance can be determined, the detection efficiency is improved, and the product quality can be detected more quickly to serve industrial production.

[0195] 5. The detection device of the present application is optimized in design, not only the structure is more compact, the operation is simple, but also the advanced electronic heating system is integrated, which ensures the accurate control of experimental conditions. Directly monitor the temperature, pressure and gas flow in real time, reduce the error caused by environmental fluctuations or human operation, improve the accuracy and reliability of the detection data. In addition, the compact structure design reduces the space occupation, and is convenient for the layout of laboratory or production line.

[0196] The above embodiments are only preferred embodiments of the present application, and cannot limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art based on the present application are within the scope of the present application.

Claims

1. A rapid detection method for quality index of aluminum-free baking powder, characterized in that, It comprises the following steps: (1) preparing the experimental group of leavening powder sample and the blank group of leavening powder sample required for detection; The components of the experimental group of leavening powder sample include sodium bicarbonate, phosphate, glucono-delta-lactone, citric acid, calcium carbonate, calcium sulfate, salt, and corn starch; the components of the blank group of leavening powder sample include phosphate, glucono-delta-lactone, citric acid, calcium carbonate, calcium sulfate, salt, and corn starch; (2) adding the experimental group of leavening powder sample into the sample tube in the leavening powder gas production reactor, then placing the sample tube into the hole of the water bath reaction box by using the handheld sample placing device, setting the water temperature of the water bath reaction box, and keeping the temperature constant; the weight ratio of the experimental group of leavening powder sample and deionized water is (1-2):(60-120); the water bath temperature in step (2) is 80-90℃; (3) connecting the placed experimental group of sample tube and the three-way valve in the leavening powder gas production collector, adding heated deionized water above 90℃ into the sample tube, adjusting the three-way valve to connect the sample tube and the rubber tube, collecting the gas into the gas collecting tube in the leavening powder gas production collector, and reading the temperature, pressure, gas volume, gas production duration, and PH value of the aqueous solution in the gas collecting tube as T1, P1, V1, t1, and PH1 respectively; (4) adding the blank group of leavening powder sample into the sample tube in the leavening powder gas production reactor, then placing the sample tube into the hole of the water bath reaction box by using the handheld sample placing device, setting the water temperature of the water bath reaction box, and keeping the temperature constant; (5) connecting the placed blank group of sample tube and the three-way valve in the leavening powder gas production collector, adding heated deionized water above 90℃ into the sample tube, adjusting the three-way valve to connect the sample tube and the rubber tube, collecting the gas into the gas collecting tube in the leavening powder gas production collector, and reading the temperature, pressure, and gas volume in the gas collecting tube as T0, P0, and V0 respectively; (6) calculating the gas production A by formula; in step (6), the formula calculation process is as follows: the carbon dioxide gas production is calculated as the carbon dioxide volume A produced by each liter of sample under standard state, and the unit is milliliter per gram (mL / g); The gas production of the experimental group is A1, with the unit of mL / g; The gas production of the blank group is A0, and the unit is mL / g; V1: the gas volume of the experimental group, unit: mL; P1: the pressure of the experimental group, unit: kPa; T1: the temperature of the experimental group, unit: K; m1: the mass of the experimental group, unit: g; V0: the gas volume of the blank group, unit: mL; P0: the pressure of the blank group, unit: kPa; T0: the temperature of the blank group, unit: K; m0: the mass of the blank group, unit: g; 101.3: atmospheric pressure under standard state, unit: kPa.

2. A combination device based on the rapid detection method of the quality index of the aluminum-free baking powder according to claim 1, characterized in that The device is composed of A, B, C and D parts; the A part is a water bath reaction box, which can be filled with water, and has a serpentine heating tube (2) and a temperature control device (3) connected to it, which can heat the water to a set temperature, and the upper part of the box has a hole (1) for placing sample tubes; this part is connected to the sample tubes in the C part through the sampler in the B part; the B part is a handheld sampler for inserting sample tubes; in the C part, the component (5) is inserted into the sample tube containing the sample, and then the sample tube is inserted into the sample tube hole in the A part, and then the sample tube is placed in the A part by pressing the buckle device (4) and moving the push ring (6), realizing rapid sample placement; the C part is a sample tube holder that matches the B part, with four sample tubes (7) inserted, and the handheld device of the B part is combined to place the sample tube into the water bath reaction box of the A part to complete the sample placement step, and in this step, water and sample need to be added to the sample tube; the D part is a baking powder gas production and collection device that matches the A part device and is connected to the sample tube of the A part; the three-way valve (9) is connected to the sample tube and has a PH value detection probe (16) that can contact the sample tube solution, and the probe is connected to the display device (11), the three-way valve (9) has a funnel (8) for adding liquid reagents on top, and a rubber tube (10) connected to the gas collection tube on the right; the gas collection tube (12) collects the gas, and three probes are installed at the top of the tube, which are temperature detection probe (13), pressure detection probe (14) and gas flow probe (15), the gas flow probe can detect the volume and duration of gas production, and the three probes are connected to the display device (11) respectively.

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