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Method for preparing D-allulose through vacuum spray drying

A technology of vacuum spray drying and psicose, which is applied in the field of preparation of vacuum spray drying D-psicose, can solve problems such as unsatisfactory effect, difficulty in obtaining powder, influence on product yield and quality, etc. The effect of large industrial production and application value, no impact on product quality, and simple operation

Inactive Publication Date: 2019-02-05
BAOLINGBAO BIOLOGY
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AI Technical Summary

Problems solved by technology

At present, most of the existing conventional spray drying equipment in the Chinese market adopts a drying temperature above 150°C. When spray drying sugar-containing materials in laboratories and large-scale production, because sugar is relatively easy to melt at high temperatures, the spray drying moment It melts and sticks together, forming something like brown sugar that sticks to the wall of the spray drying tower, and the clogging of the spray head is also serious. It is difficult to obtain the required powder with good fluidity. Sometimes in order to obtain the powder, Add a large amount of auxiliary materials, such as starch, cyclodextrin and other materials, but the effect is not very satisfactory, affecting the product yield and quality

Method used

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  • Method for preparing D-allulose through vacuum spray drying

Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Enzymatic preparation process of D-psicose syrup

[0016] (1) Enzyme reaction: prepare 500 g×L with deionized water -1 D-fructose solution, the amount of enzyme solution added is 30 μL×g -1 For D-fructose, the reaction temperature was 55°C, and the temperature was raised to 100°C after 10 h to inactivate the enzyme.

[0017] (2) Decolorization: add 0.1-5% activated carbon in the dry weight of the feed solution, keep the temperature at 70-100°C for 30 minutes, and remove the activated carbon with a ceramic membrane.

[0018] (3) Isolation: The material liquid is desalinated by cation-anion-cation exchange resin to reduce the conductance, and the conductance is required to be 0~100 μs / cm when the sugar concentration is 30%.

[0019] process such as figure 1 As shown, the D-psicose content of D-psicose obtained after enzymatic conversion of D-fructose reaches 27-30%; Chromatographic separation, re-decolorization with activated carbon, separation and concentr...

Embodiment 2

[0020] Example 2 Preparation of D-psicose powder by vacuum spray drying

[0021] Concentrate D-psicose syrup to a sugar concentration of 40~60%, set the tank temperature to 40~80°C, vacuum degree to 40~80KPa, material preheating temperature to 40~60°C, and finally dry allulone The water content of powdered sugar is 5%, the purity is over 98%, and the yield is 71%.

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Abstract

The invention relates to a preparation method of D-allulose, particularly relates to a method for preparing D-allulose through vacuum spray drying and belongs to the technical field of food processing. The method comprises the following steps: converting a D-allulose solution by using biological enzyme, decolorizing, carrying out ion exchange, concentrating and carrying out chromatographic separation to obtain high-purity D-allulose syrup, and further obtaining D-allulose powder by using a vacuum spray drying technology. Through the preparation method of D-allulose, the defect that the powdercannot be obtained due to serious wall adhesion of the previous spray drying is overcome; the yield of D-allulose is increased; the prepared D-allulose powder is high in flowability, high in re-dissolvability and good in taste, and has great values of industrial production and application.

Description

technical field [0001] The invention relates to a preparation method of vacuum spray drying D-psicose, which belongs to the technical field of food processing. Background technique [0002] With the improvement of living standards, people pay more and more attention to food safety. Various functional foods and low-calorie sweeteners have entered the market and are highly concerned by consumers. D-psicose (D-psicose / D-allulose), is a rare sugar that exists in nature but is very low in content. It is the epimer of the C-3 position of D-fructose; its sweetness is 70% of sucrose, but only provides 0.3% of the calories equivalent to sucrose, it is the best substitute for sucrose in food. The CAS number of D-psicose is 551-68-8. The U.S. Food and Drug Administration (FDA) officially approved D-psicose as generally recognized as safe (GRAS) in 2014, allowing it to be used in food, dietary supplements and pharmaceutical preparations. [0003] According to reports, allulose powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/24C12P19/02
CPCC12P19/24C12P19/02
Inventor 邓淑芬李克文栾庆民殷欣
Owner BAOLINGBAO BIOLOGY
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