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Citrus dietary fiber with high water-holding capacity and expansibility and preparation method of citrus dietary fiber

A dietary fiber and water-holding technology, applied in the field of food additives, can solve the problems of insufficient scope of application, lack of controllability of biological methods, etc., and achieve the effects of reducing energy consumption, improving functional characteristics, and improving effects

Inactive Publication Date: 2021-08-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biological method lacks controllability and the scope of application is not wide enough

Method used

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  • Citrus dietary fiber with high water-holding capacity and expansibility and preparation method of citrus dietary fiber
  • Citrus dietary fiber with high water-holding capacity and expansibility and preparation method of citrus dietary fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Activate xylanase with citric acid-sodium hydrogen phosphate (CPBS) buffer solution with a pH of 3.0 in a constant temperature water bath at 30°C for 0.5h to obtain an enzyme activation solution, xylanase: orange dietary fiber The mass ratio of the slag is 0.30% (w / w); the tangerine dietary fiber slag and the enzyme activation solution are mixed according to 1g: 20mL, kept in a water bath at 30°C and stirred for 0.5h, and the citrus fiber suspension is placed Inactivate the enzyme in a water bath at 80°C for 10 minutes, cool to room temperature and add 1 volume of absolute ethanol, let stand for 0.5h, filter with a 200-mesh filter cloth, discard the liquid, collect the solids, and store at 50°C Dry to constant weight to obtain citrus fiber prepared by enzyme treatment.

[0052] Preparation of tangerine dietary fiber slag: add citrus peel to deionized water with a mass volume ratio of 1g: 20mL, adjust the pH of the citrus peel suspension to 1.5 with 1wt% nitric acid ...

Embodiment 2

[0055] Mix cellulase and xylanase in a mass ratio of 1:1, and activate the enzyme mixture with citric acid-disodium hydrogen phosphate (CPBS) buffer solution with a pH of 4.0 in a constant temperature water bath at 50°C for 0.5h , to obtain enzyme activation solution, enzyme mixture: the mass ratio of citrus dietary fiber slag is 0.45% (w / w); the citrus dietary fiber slag and enzyme activation solution are mixed according to 1g: 30mL, and are incubated and stirred in a water bath under the condition of 50°C After 1.5 hours, put the citrus fiber suspension in a water bath at 85°C for 15 minutes to inactivate the enzyme, cool to room temperature and add 4 times the volume of absolute ethanol, let it stand for 1 hour, filter it with a 300-mesh filter cloth, and discard the liquid , collect the solid matter, and dry it to constant weight under the condition of 60° C. to obtain citrus fiber prepared by enzyme treatment.

[0056] Preparation of citrus dietary fiber slag: add citrus ...

Embodiment 3

[0059] (1) Cellulase and citric acid-sodium hydrogen phosphate (CPBS) buffer solution with a pH of 5.0 were activated for 0.5h under the condition of a constant temperature water bath at 60°C to obtain an enzyme activation solution, cellulase: citrus dietary fiber residue The mass ratio is 0.15% (w / w); the citrus dietary fiber residue and the enzyme activation solution are mixed according to 1g: 40mL, kept in a water bath at 60°C and stirred for 1.5h. After the reaction, place the citrus fiber suspension at 85 Inactivate the enzyme in a water bath at ℃ for 20 minutes, cool to room temperature and add 4 times the volume of ethanol aqueous solution with a volume fraction of 95%, let it stand for 2 hours, filter with a 400-mesh filter cloth, discard the liquid, collect the solids, and store at 70 ℃ Drying to constant weight under conditions to obtain citrus dietary fiber based on enzyme treatment;

[0060] (2) Treat the citrus dietary fiber based on enzyme treatment with distille...

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Abstract

The invention belongs to the technical field of food additives, and discloses citrus dietary fiber with high water-holding capacity and expansibility and a preparation method of the citrus dietary fiber. The method comprises the following steps: 1) mixing citrus dietary fiber residues with an enzyme activation solution, carrying out enzymolysis treatment, carrying out enzyme inactivation and solid-liquid separation, collecting solids, and drying to obtain citrus dietary fibers based on enzyme treatment; or 2) treating the citrus dietary fiber based on enzyme treatment in the step 1) by adopting a physical method to obtain the citrus dietary fiber based on an enzyme pretreatment synergetic physical mode. The method disclosed by the invention is simple, and the prepared citrus dietary fiber is high in water-holding capacity and expansibility, has very good hydration performance and colloid performance, and can be used as an excellent food ingredient to be added into food.

Description

technical field [0001] The invention belongs to the technical field of food additives, and in particular relates to a citrus dietary fiber with high water holding capacity and swelling capacity and a preparation method thereof. Background technique [0002] At present, the global citrus production exceeds 51 billion, of which about one-third of citrus fruits are used in the food industry, such as juice, jam production, pulp canning and pectin extraction industry. The main component of citrus peel, a by-product of these industries, is dietary fiber, mostly insoluble dietary fiber (IDF). [0003] Studies have shown that dietary fiber can lower blood pressure and blood sugar, prevent cancers such as colon cancer and breast cancer, prevent cardiovascular diseases, and reduce weight. It plays an indispensable role in medicine and nutrition, so it has attracted widespread attention from the society. , is listed as the "seventh largest nutrient" after "sugar, protein, fat, water, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/22A23L29/00
CPCA23L33/22A23L29/06A23V2002/00A23V2250/5116
Inventor 齐军茹宋丽雯
Owner SOUTH CHINA UNIV OF TECH
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