Preparation method and application of food-grade microcrystalline cellulose

A microcrystalline cellulose, food-grade technology, applied in the field of microcrystalline cellulose preparation, can solve the problems of product anti-oxidation protection, product easy to turn brown, poor anti-oxidation effect of microcrystalline cellulose products, etc., to avoid enzyme Effects of catalytic discoloration, calorie reduction, and regulation of human dietary structure

Pending Publication Date: 2020-01-31
GUANGXI NORMAL UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the whole process of this method, only the oxidized product is decolorized in the bleaching process, and the product is not fundamentally protected against oxidation, resulting in poor anti-oxidation effect of the prepared microcrystalline cellulose product. easy to turn brown

Method used

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  • Preparation method and application of food-grade microcrystalline cellulose
  • Preparation method and application of food-grade microcrystalline cellulose

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preparation example Construction

[0032] A preparation method of food-grade microcrystalline cellulose, carried out as follows:

[0033] (1) Crushing bagasse: dry the bagasse after sugar extraction in vacuum and low temperature, and crush it into powder; dry it in vacuum at a temperature of 60-70°C, and vacuum degree of -0.08--0.10MPa, and dry it in a vacuum at low temperature The time is 1-2h; the particle size of the powder is 10-40 mesh.

[0034] (2) Desugaring: soak the powder obtained in step (1) in ethanol, and dry to obtain filter residue I; the mass concentration of ethanol is 20% to 40%, and the mass solid-to-liquid ratio of bagasse powder and ethanol is 1 : 1, soaking time is 2-3 hours.

[0035] (3) Anti-discoloration treatment: add an acidic mixed solution to the desugared filter residue I, stir evenly, soak, and dry to obtain filter residue II. The acidic mixed solution is composed of acetic acid, ascorbic acid and citric acid solution; the filtered residue I and the acidic mixed solution The add...

Embodiment 1

[0040] Put 250g of bagasse into a rotary evaporator with a vacuum degree of -0.10MPa and a temperature of 70°C for 2 hours, and pulverize it with a pulverizer, with a particle size of 10-40 mesh. The powder was soaked in 250ml of ethanol with a mass concentration of 40% for 3 hours, and dried to obtain filter residue I. Add 1000ml of acetic acid + ascorbic acid + citric acid mixture with a mass ratio of 1:1:1 to the filter residue I (the mass concentration of acetic acid is 5%, the mass concentration of ascorbic acid is 10%, and the mass concentration of citric acid is 10%) for soaking After 10 hours, spin dry to obtain filter residue II. Add 1250ml of 10% sodium hydroxide solution to the filter residue II, put it in a water bath at 90°C for 2 hours, take it out to cool, spin dry, and wash with a small amount of water several times while spinning dry. Add 1000ml of 4mol / L hydrochloric acid, heat to boiling, keep warm for 1.5h, let stand for 24h, and shake dry. Soak in 500ml ...

Embodiment 2

[0042] Put 250g of bagasse into a rotary evaporator with a vacuum degree of -0.09MPa and a temperature of 65°C for 1.5h, and pulverize it with a pulverizer, with a particle size of 10-40 mesh. The powder was soaked in 250ml of ethanol with a mass concentration of 30% for 2.5 hours, and dried to obtain filter residue I. Add 750ml of acetic acid + ascorbic acid + citric acid mixture with a mass ratio of 1:1:1 to the filter residue I (the mass concentration of acetic acid is 4%, the mass concentration of ascorbic acid is 7.5%, and the mass concentration of citric acid is 7.5%) and soak After 7.5 hours, spin dry to obtain filter residue II. Add 1000ml of 7.5% sodium hydroxide solution to the filter residue II, put it in a water bath at 85°C for 1.5h, take it out to cool, spin dry, and wash with a small amount of water several times while spinning dry. Add 1000ml of 3.5mol / L hydrochloric acid, heat to boiling, keep warm for 1.5h, let stand for 24h, and shake dry. Soak in 500ml of...

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Abstract

The invention discloses a preparation method of food-grade microcrystalline cellulose, and the preparation method comprises the following steps: (1) pulverizing bagasse: carrying out vacuum low-temperature drying on sugar-squeezed bagasse, and pulverizing the dried bagasse into powder; (2) carrying out desugaring; (3) carrying out anti-discoloration treatment: adding acidic mixed solution into a filter residue I, and uniformly stirring the mixture, followed by soaking and spin-drying, thereby obtaining a filter residue II, wherein the acidic mixed solution is composed of acetic acid, ascorbicacid and citric acid solution; (4) carrying out bleaching treatment; (5) carrying out acidolysis; and (6) carrying out aftertreatment: spin-drying the acidolyzed material, soaking the material in hotwater, and washing the material to be neutral by using hot water, followed by spin-drying, freeze drying and pulverizing, thereby obtaining the food-grade microcrystalline cellulose product. The method has the advantages that the food-grade microcrystalline cellulose is high in yield, natural in color, not prone to changing color and safe to eat, and biscuits prepared by the method can prolong theshelf life of the biscuits, reduce the calories of the biscuits and adjust the dietary pattern of the human body.

Description

technical field [0001] The invention belongs to the field of preparation of microcrystalline cellulose, and in particular relates to a preparation method and application of food-grade microcrystalline cellulose. Background technique [0002] China is the third largest sugarcane planting country in the world, second only to India and Brazil, and Guangxi is the province that grows and produces the most sugarcane sugar. Sugarcane is an important cash crop and occupies an important position in the national economy. Bagasse contains more natural polymer substances such as cellulose, hemicellulose, and lignin. At present, most of the bagasse is burned or discarded directly, which not only wastes excellent resources, but also affects environmental indicators and takes up space. Therefore, extracting cellulose from sugarcane for industrial production can produce good economic benefits and reduce environmental pollution. [0003] At present, there are chemical methods and enzymatic...

Claims

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Application Information

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IPC IPC(8): A21D2/36C08B15/02
CPCA21D2/36C08B15/02Y02P60/87
Inventor 叶有明符舒娜杨少辉农永萍谢雪珍吴国勇蒋才云蓝峻峰
Owner GUANGXI NORMAL UNIV OF SCI & TECH
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