Novel production process method of invert syrup for soft white sugar

Abstract

The invention provides a novel production process method of invert syrup for soft white sugar, and relates to the technical field of soft white sugar production. The method adopts a multi-stage purification and precise control process, comprises the steps of raw syrup decalcification, activated carbon decoloration, ion exchange desalination, vacuum deodorization, concentration regulation and sterilization, acid-base compounding and the like, and solves the problems of large color value fluctuation, non-uniform reducing sugar content and caking caused by manual intervention in the traditional process. A parameter linkage control technology is innovatively adopted, and uniform addition of invert syrup and soft white sugar is realized by online monitoring of core indexes such as calcium ions, color values and salinity in combination with compressed air injection mixing. The process can stabilize the reducing sugar content, improve the syrup light transmittance, reduce the caking rate, reduce the raw material loss and improve the production efficiency by optimizing the dosages of the decalcifying agent and the activated carbon, and is suitable for ten-thousand-ton continuous production, and the comprehensive production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soft white sugar production, and in particular to a novel process for producing invert sugar syrup for soft white sugar. Background Art

[0002] In the process of producing soft sugar in sugar factories, the preparation and addition control of invert sugar syrup is particularly important. In the traditional production of soft sugar, the preparation process of invert sugar syrup mostly adopts conventional methods. This method is usually difficult to strictly control the key production indicators of invert sugar syrup, such as color value, brix, reducing sugar content, etc. These indicators have a significant impact on product quality and market competitiveness. However, in the actual production process, the traditional process has the following defects: First, the color value control is unstable, resulting in uneven color of soft sugar products, which reduces the overall appearance quality of the product; second, the hammer and reducing sugar content are not easy to accurately control, which easily leads to uneven sugar content of the product, further affecting the taste of the product; third, there are many human factors in the traditional method, and it is difficult to achieve continuous and stable automatic control of the monitoring of various physical and chemical indicators during the production process, making it difficult to adapt to the needs of large-scale, large-scale, and stable production. In addition, the traditional production process is prone to the problem of soft sugar agglomeration, which affects the storage and sales of the product.

[0003] In order to overcome the problems existing in the above-mentioned traditional processes, the present invention proposes a novel process for producing invert sugar syrup for soft sugar, in order to achieve accurate and automatic control of indicators such as color value, brix, and reducing sugar content of the invert sugar syrup, improve product quality, reduce production costs, and effectively avoid product agglomeration problems, thereby enhancing the market competitiveness of soft sugar products. Summary of the invention

[0004] A novel process for producing invert sugar syrup for soft white sugar comprises the following steps: S1: transport the raw sugar syrup to the decalcification device at a flow rate of 150-200 L / h, add the decalcification agent to stir and decalcify, the reaction time is 30-45 minutes, and the calcium ion content is reduced to ≤50ppm; S2: The decalcified syrup enters the decolorization device and is decolorized at 60-70°C for 20-30 minutes, with a color value of ≤30IU; S3: The decolorized syrup is treated in a desalting device at 60-70℃ for 15-20min, and the salt content is ≤0.05%; S4: The desalted syrup is deodorized for 15-25 minutes under a vacuum negative pressure of -0.06~-0.08MPa to obtain a primary invert syrup; S5: The primary invert syrup is concentrated at 80-90°C to a Brix of 70-75°Bx; S6: The concentrated syrup is treated by a sterilization device to generate secondary conversion syrup; S7: adding acid and alkali to the secondary invert syrup to adjust the pH to 4.5-5.5 to obtain invert syrup; S8: Add invert sugar syrup at 2% to 3% of the total weight of granulated sugar to complete mixing.

[0005] Furthermore, the decalcifying agent in S1 is lime milk, and the added amount is 0.2% to 0.4% of the weight of the syrup.

[0006] Furthermore, the decolorization treatment in S2 uses activated carbon, and the added amount is 0.1% to 0.3% of the weight of the syrup.

[0007] Furthermore, the desalination device in S3 is an ion exchange resin column, and the regeneration period is ≤12h.

[0008] Furthermore, the sterilization conditions in S6 are 95-105° C. and 10-15 min.

[0009] Furthermore, the acid added in S7 is citric acid, the alkali added is sodium carbonate, and the total added amount is ≤ 0.5% of the weight of the syrup.

[0010] Furthermore, the acid added in S7 is citric acid, the alkali added is sodium carbonate, and the total added amount is ≤ 0.5% of the weight of the syrup.

[0011] Furthermore, the mixing in S8 is performed by compressed air injection, and the injection pressure is 0.3-0.5 MPa.

[0012] Compared with the prior art, the present invention has the following advantages: High degree of automation: It realizes automatic and precise control of key indicators of invert syrup and reduces human errors.

[0013] Stable product quality: The consistency of syrup color value, brix, and reducing sugar content is improved, and the taste and appearance quality of soft sugar are improved.

[0014] Improved production efficiency: reduced labor intensity and production costs, suitable for large-scale stable production.

[0015] Prevent caking: effectively prevent granulated sugar from agglomerating during storage and extend the shelf life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a production process flow chart of the present invention. DETAILED DESCRIPTION

[0017] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and is not a limitation of the scope of protection, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the contents of this specification. Various examples can omit, replace or add various processes or components as needed. For example, the described method can be performed in an order different from the described order, and various steps can be added, omitted or combined. In addition, the features described relative to some examples can also be combined in other examples.

[0018] As used herein, the term "including" and its variations represent open terms, meaning "including but not limited to". The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification.

[0019] Example A novel process for producing invert sugar syrup for soft white sugar comprises the following steps: S1: transport the raw sugar syrup to the decalcification device at a flow rate of 150-200 L / h, add the decalcification agent to stir and decalcify, the reaction time is 30-45 minutes, and the calcium ion content is reduced to ≤50ppm; S2: The decalcified syrup enters the decolorization device and is decolorized at 60-70°C for 20-30 minutes, with a color value of ≤30IU; S3: The decolorized syrup is treated in a desalting device at 60-70℃ for 15-20min, and the salt content is ≤0.05%; S4: The desalted syrup is deodorized for 15-25 minutes under a vacuum negative pressure of -0.06~-0.08MPa to obtain a primary invert syrup; S5: the primary invert syrup is concentrated at 80-90°C to a Brix of 70-75°Bx; S6: The concentrated syrup is treated by a sterilization device to generate secondary conversion syrup; S7: adding acid and alkali to the secondary invert syrup to adjust the pH to 4.5-5.5 to obtain invert syrup; S8: Add invert sugar syrup at 2% to 3% of the total weight of granulated sugar to complete mixing.

[0020] Furthermore, the decalcifying agent in S1 is lime milk, and the added amount is 0.2% to 0.4% of the weight of the syrup.

[0021] Furthermore, the decolorization treatment in S2 uses activated carbon, and the added amount is 0.1% to 0.3% of the weight of the syrup.

[0022] Furthermore, the desalination device in S3 is an ion exchange resin column, and the regeneration period is ≤12h.

[0023] Furthermore, the sterilization conditions in S6 are 95-105° C. and 10-15 min.

[0024] Furthermore, the acid added in S7 is citric acid, the alkali added is sodium carbonate, and the total added amount is ≤ 0.5% of the weight of the syrup.

[0025] Furthermore, the acid added in S7 is citric acid, the alkali added is sodium carbonate, and the total added amount is ≤ 0.5% of the weight of the syrup.

[0026] Furthermore, the mixing in S8 is performed by compressed air injection, and the injection pressure is 0.3-0.5 MPa.

[0027] The raw sugar syrup (initial calcium content 120ppm) was pumped into the decalcification device at a flow rate of 180L / h, and lime milk (concentration 10%) of 0.3% of the weight of the syrup was added. The stirring speed was 150rpm, and the reaction time was 40 minutes. The calcium ion content dropped to 45ppm, reaching the ≤50ppm standard. The decalcified syrup entered the decolorization tank, heated to 65℃, and food-grade granular activated carbon (particle size 200 mesh) of 0.2% of the weight of the syrup was added. The stirring was continued for 25 minutes. After filtering through a plate and frame filter (pore size 5μm), the color value dropped from the initial 85IU to 25IU. The decolorized syrup passed through a two-stage ion exchange column (cation resin: 001×7 type; anion resin: 201×7 type), the flow rate was controlled at 3m³ / h, the temperature was 65℃, the treatment time was 18 minutes, the conductivity dropped from 350μS / cm to 80μS / cm, and the salt content was 0.03%. The syrup enters the vacuum degassing tank, maintaining a pressure of -0.07MPa, and the deodorization time is 20 minutes to remove volatile sulfides and other odor substances. The first conversion syrup is concentrated by a falling film evaporator at 85°C for 38 minutes, and the brix is ​​increased from 60°Bx to 73°Bx. The concentrated syrup is sterilized by a tubular sterilizer at 100°C for 12 minutes, and the total number of microorganisms is increased from 10 4CFU / mL dropped to <10CFU / mL. The secondary invert syrup was transported to the compounding tank, 0.35% citric acid and 0.15% sodium carbonate (both by weight of syrup) were added, the pH was adjusted to 5.0, and the reducing sugar content was stabilized at 12.5%±0.3%. Using a compressed air injection system (pressure 0.4MPa), invert syrup was added at 2.5% of the total weight of soft white sugar, and the mixing uniformity CV value was ≤3% (the traditional process CV value was >8%).

[0028] The present invention provides another parameter optimization implementation as follows: The decalcification flow rate was increased to 200L / h, the amount of lime milk added was 0.25%, and the reaction time was 35 minutes (calcium content 48ppm); The decolorization stage uses a composite adsorbent of 0.15% activated carbon + 0.05% diatomaceous earth, and the decolorization time is shortened to 20 minutes (color value 28IU); The regeneration cycle of ion exchange resin is extended to 14 hours (salt content 0.04%); Concentration temperature 88°C, time 30 minutes (Brix 75°Bx); Sterilization temperature: 98℃, time: 10 minutes (microorganisms < 5 CFU / mL).

[0029] The present invention provides another low-cost process variant implementation as follows: The decalcifying agent was changed to 0.35% disodium hydrogen phosphate (calcium content 52ppm); The dosage of decolorizing activated carbon is 0.3%, and the decolorizing temperature is 60°C (color value 32IU); Sterilization temperature: 95°C, time: 15 minutes (microorganisms < 20 CFU / mL); The pH value was relaxed to 5.5 (reducing sugar content 11.8%) during the compounding stage.

[0030] Those skilled in the art should understand that the various embodiments disclosed above can be changed and modified in various ways without departing from the essence of the invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

[0031] It should be noted that not all steps and units in the above processes are necessary, and some steps or units can be ignored according to actual needs. The execution order of each step is not fixed and can be determined as needed. The device structure described in the above embodiments can be a physical structure or a logical structure, that is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0032] The specific embodiments set forth above describe exemplary embodiments, but do not represent all embodiments that may be implemented or fall within the scope of protection of the claims. The term "exemplary" used throughout this specification means "used as an example, instance, or illustration" and does not mean "preferred" or "having advantages" over other embodiments. For the purpose of providing an understanding of the described techniques, the specific embodiments include specific details. However, these techniques may be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0033] The above description of the present disclosure is provided to enable any person of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A novel process for producing invert sugar syrup for soft white sugar, characterized in that: The following steps are involved: S1: transport the raw sugar syrup to the decalcification device at a flow rate of 150-200 L / h, add the decalcification agent to stir and decalcify, the reaction time is 30-45 minutes, and the calcium ion content is reduced to ≤50ppm; S2: The decalcified syrup enters the decolorization device and is decolorized at 60-70°C for 20-30 minutes, with a color value of ≤30IU; S3: The decolorized syrup is treated in a desalting device at 60-70℃ for 15-20min, and the salt content is ≤0.05%; S4: The desalted syrup is deodorized for 15-25 minutes under a vacuum negative pressure of -0.06~-0.08MPa to obtain a primary invert syrup; S5: the primary invert syrup is concentrated at 80-90°C to a Brix of 70-75°Bx; S6: The concentrated syrup is treated by a sterilization device to generate secondary conversion syrup; S7: adding acid and alkali to the secondary invert syrup to adjust the pH to 4.5-5.5 to obtain invert syrup; S8: Add invert sugar syrup at 2% to 3% of the total weight of granulated sugar to complete mixing.

2. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The decalcifying agent in S1 is lime milk, and the added amount is 0.2% to 0.4% of the weight of the syrup.

3. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The decolorization process in S2 uses activated carbon, and the added amount is 0.1% to 0.3% of the weight of the syrup.

4. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The desalination device in S3 is an ion exchange resin column, and the regeneration period is ≤12h.

5. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The sterilization conditions in S6 are 95-105° C. and 10-15 min.

6. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The acid added in S7 is citric acid, and the alkali added is sodium carbonate, and the total added amount is ≤0.5% of the weight of the syrup.

7. A novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The acid added in S7 is citric acid, and the alkali added is sodium carbonate, and the total added amount is ≤0.5% of the weight of the syrup.

8. The novel process for producing invert sugar syrup for soft white sugar according to claim 1, characterized in that: The mixing in S8 is carried out by compressed air injection, and the injection pressure is 0.3-0.5 MPa.

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