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Polydextrose with controllable molecular weight and rapid preparation method thereof

The technology of polydextrose and glucose is applied in the fields of molecular weight controllable polydextrose and its rapid preparation, edible dietary fiber and its preparation, and can solve the problems of affecting the taste application of polydextrose, uneven heating of reactants, uncontrollable molecular weight and the like, Achieve the effect of superior product performance, thorough polymerization reaction and good taste

Active Publication Date: 2014-05-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing polydextrose production process, reactors are mostly used as reactors, which have problems such as complex process, uncontrollable molecular weight, long reaction time, uneven heating of reactants, many by-products, and difficulty in separation and purification.
Moreover, the residual sorbitol and edible acid in the product will affect the taste of polydextrose and its application in food processing

Method used

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  • Polydextrose with controllable molecular weight and rapid preparation method thereof
  • Polydextrose with controllable molecular weight and rapid preparation method thereof
  • Polydextrose with controllable molecular weight and rapid preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The production technology of embodiment 1 polydextrose

[0051] Food-grade glucose 8kg, food-grade citric acid monohydrate 0.4kg, food-grade D-sorbitol 0.5kg, deionized water 1.1kg, mix evenly with a dry powder mixer, enter the microwave reactor, where the microwave power is 950W, and the reaction temperature is 125~ 130°C, reaction time 2.5 minutes, cooling in dry air, and crushing to obtain polydextrose solid. 40L of 50% ethanol was rinsed, and the polydextrose after the rinse was concentrated and vacuum-dried to obtain 7.68 kg of polydextrose solid.

[0052] HPLC detection analysis, polydextrose content ≥ 99.5%, does not contain glucose, 5-hydroxymethylfurfural, sorbitol, citric acid.

[0053] Glucose, citric acid, and sorbitol were purchased from Jinan Shengfeng Industry and Trade Co., Ltd., Weifang Ensign Industrial Co., Ltd., and Roquette, respectively.

[0054] HPLC detection conditions: detection equipment: Agilent 1260 high performance liquid chromatography; ...

Embodiment 2

[0055] The production technology of embodiment 2 polydextrose

[0056] Food-grade glucose 9kg, food-grade citric acid monohydrate 0.03kg, food-grade D-sorbitol 0.1kg, deionized water 0.97kg, mix evenly with a dry powder mixer, enter the microwave reactor, where the microwave power is 800W, and the reaction temperature is 245~ 250°C, the reaction time is 1 minute, cooled in dry air, and pulverized to obtain polydextrose solid. 52L of 25% ethanol was rinsed, and the polydextrose after the rinse was concentrated and vacuum-dried to obtain 8.12 kg of polydextrose solid.

[0057] HPLC detection analysis, polydextrose content ≥ 99.5%, does not contain glucose, 5-hydroxymethylfurfural, sorbitol, citric acid.

[0058] Raw material sources and detection conditions are the same as those described in Example 1.

Embodiment 3

[0059] The production technology of embodiment 3 polydextrose

[0060] Food-grade glucose 7kg, food-grade citric acid monohydrate 0.5kg, food-grade D-sorbitol 0.5kg, deionized water 2kg, mix evenly with a dry powder mixer, enter the microwave reactor, where the microwave power is 900W, and the reaction temperature is 105-110 °C, the reaction time is 8 minutes, cooled in dry air, and pulverized to obtain polydextrose solid. 44 L of 80% ethanol was rinsed, and the polydextrose after the rinse was concentrated and vacuum-dried to obtain 6.53 kg of polydextrose solid.

[0061] HPLC detection analysis, polydextrose content ≥ 99.5%, does not contain glucose, 5-hydroxymethylfurfural, sorbitol, citric acid.

[0062] Raw material sources and detection conditions are the same as those described in Example 1.

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Abstract

The invention relates to an edible dietary fiber and a rapid preparation method thereof, and in particular relates to a polydextrose with a controllable molecular weight and the rapid preparation method thereof. The polydextrose is characterized in that the average molecular weight of the polydextrose ranges from 600Da to 3500Da; the average polymerization degree of the polydextrose ranges from 4 to 20; the content of the polydextrose is greater than or equal to 99.5%; and glucose and 5-hydroxymethylfurfural are not contained in the polydextrose. The invention further discloses the rapid preparation method of the polydextrose. The method comprises the following steps: performing microwave radiation on a mixture of the glucose and sorbitol for 0.5 to 8 minutes by taking deionized water as a reaction initiator and an edible acid as a reaction catalyst under the condition of the microwave radiation so as to obtain a polydextrose product; smashing the polydextrose product; and then washing the polydextrose product with ethyl alcohol and drying, thereby obtaining the polydextrose without containing the glucose, the 5-hydroxymethylfurfural and the edible acid. The polydextrose which is prepared by adopting a microwave-assisted solid-phase synthesis technology has the characteristics of being rapid in reaction speed, high in synthesis yield, low in production cost, environment-friendly, controllable in molecular weight, neutral in pH (Power Of Hydrogen) and milk white.

Description

technical field [0001] The invention belongs to the technical field of food processing. Specifically, the invention relates to edible dietary fiber and a preparation method thereof, in particular to a polydextrose with controllable molecular weight and a rapid preparation method thereof. Background technique [0002] Polydextrose (polydextrose) is a functional food ingredient. In August 2007, the U.S. Food and Drug Administration (FDA) approved polydextrose as a generally recognized as safe (GRAS) additive together with galactooligosaccharides as a prebiotic added to Infant formula. Polydextrose is an odorless, white amorphous powdery solid with a melting point higher than 130°C and is easily soluble in water with a solubility greater than 70%. It is not hydrolyzed by the digestive juice of the gastrointestinal tract, reaches the colon to regulate the intestinal microecological balance, lowers blood sugar and blood lipids, prevents and assists in the treatment of constipat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/09A23L29/30C08B37/02
CPCA23L29/30A23L33/21C08B37/0006
Inventor 乐国伟王海松施用晖
Owner JIANGNAN UNIV
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