Preparation method of high-purity polydextrose with controllable molecular weight

A polydextrose and molecular weight technology, which is applied in the field of polydextrose preparation, can solve problems affecting the color and taste of end products, large differences in dissolution speed and state, and excessive molecular weight differences, so as to achieve product uniformity and stability, and improve food safety Sex, reduce the effect of reducing sugar content

Active Publication Date: 2012-05-02
SHANDONG LONGLIVE BIO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN1834110A discloses a modified polydextrose and its preparation process. The existing problem is that the difference in molecular weight is too large, resulting in a large difference in dissolution rate and state, which affects the color and taste of the end product, and seriously restricts the use of polydextrose in high-end products. app promotion for

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  • Preparation method of high-purity polydextrose with controllable molecular weight
  • Preparation method of high-purity polydextrose with controllable molecular weight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] ①Baking material: Since the raw material contains a certain amount of moisture, dry it in an oven at 105°C for 3 hours to a moisture content of less than 1%;

[0034] ② Ingredients: the glucose, sorbitol, and citric acid are mixed evenly according to the ratio of parts by weight of 89:12:0.7;

[0035] ③ Polycondensation reaction: The raw materials are stirred and reacted for 2 hours at a reaction temperature of 140-150°C, a vacuum of 0.072-0.080MPa, and a rotation speed of 120r / min;

[0036] ④ Dissolving sugar material: add 20-60 ℃ warm water chemical material to make a polydextrose solution with a mass concentration of 45%;

[0037] ⑤Adjust pH value: Use ion exchange resin (001×7 type cation resin; D301 type anion resin) to adjust the pH value of polydextrose solution to 4.5~5.0;

[0038] ⑥Purify the sugar solution after adjusting the pH value: use ultrafiltration membrane (K-5 roll-type ultrafiltration membrane molecular weight 20000) and nanofiltration membrane (100...

Embodiment 2

[0043] ①Baking material: Since the raw material contains a certain amount of moisture, dry it in an oven at 105°C for 3 hours to a moisture content of less than 1%;

[0044] ② Ingredients: the glucose, sorbitol, and citric acid are mixed evenly according to the ratio of parts by weight of 86:12:0.7;

[0045] ③Condensation reaction: The raw materials are stirred and reacted for 3 hours at a reaction temperature of 160-170°C, a vacuum of 0.080-0.085MPa, and a rotation speed of 124r / min;

[0046] ④ Dissolving sugar material: add 20-60 ℃ warm water chemical material to make a polydextrose solution with a mass concentration of 47%;

[0047] ⑤Adjust the pH value: use ion exchange resin (001×7 type cationic resin; D301 type anionic resin) to adjust the pH value of the polydextrose solution to 4.7-5.2;

[0048] ⑥Purify the sugar solution after adjusting the pH value: use ultrafiltration membrane and nanofiltration membrane to perform ultrafiltration and nanofiltration purification;

...

Embodiment 3

[0053] ①Baking material: Since the raw material contains a certain amount of moisture, dry it in an oven at 105°C for 3 hours to a moisture content of less than 1%;

[0054] ② Ingredients: the glucose, sorbitol, and citric acid are mixed evenly according to the ratio of parts by weight of 88:11:0.9;

[0055] ③Condensation reaction: The raw materials are stirred and reacted for 3.5 hours at a reaction temperature of 170-180°C, a vacuum of 0.083-0.087MPa, and a rotation speed of 115r / min;

[0056] ④ Dissolving sugar material: add 20-60 ℃ warm water chemical material to make a polydextrose solution with a mass concentration of 45%;

[0057] ⑤Adjust the pH value: Use ion exchange resins (D201, D352) to adjust the pH value of the polydextrose solution to 4.5-5.0;

[0058] ⑥Purify the sugar solution after adjusting the pH value: use ultrafiltration membrane and nanofiltration membrane to perform ultrafiltration and nanofiltration purification;

[0059] ⑦ Chromatographic separation...

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Abstract

The invention relates to a preparation method of high-purity polydextrose with controllable molecular weight. The method comprises the following steps of: carrying out the reaction among dried dextrose, sorbierite and citric acid in a low-temperature vacuum environment while stirring; then adding warm water to dissolve the materials and regulating pH value; separating by using an ultrafiltration membrane and a nanofiltration membrane; carrying out chromatograph; and finally dewatering and concentrating, and carrying out spray drying to obtain a powdery product with molecular weight in any onerange below 50,000. The product prepared by the method is uniform and has good taste, and a white powdery polydextrose finished product can be obtained.

Description

Technical field: [0001] The invention relates to a preparation method of polydextrose, in particular to a preparation method of high-purity polydextrose with controllable molecular weight. Background technique: [0002] Polydextrose is a functional food additive that can supplement the water-soluble dietary fiber needed by the human body. It is a special carbohydrate with low calorie, sugar-free and low glycemic index. It also has the characteristics of prebiotics. It is widely used in beverages, In food industries such as dairy products, baked food, health care products and medicines, candy and meat products, it has the function of improving food texture and nutritional enhancement. The special curative effect of polydextrose on the human body is becoming more and more obvious. Widely concerned by the industry and industrialized production, new products of polydextrose will have a broader consumer market, and the demand for polydextrose as a raw material for functional food...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/09
Inventor 肖林李莹陈小刚覃树林
Owner SHANDONG LONGLIVE BIO TECH CO LTD
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