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Method for preparing citrus fibers from citrus pericarp

A technology of citrus fiber and citrus, which is applied in the field of preparing citrus fiber from citrus peel, which can solve the problems of high cost, insufficient scope of application, and high equipment, and achieve the effects of low cost, wide application range and short production cycle

Pending Publication Date: 2019-11-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, physical modification methods such as membrane separation, extrusion treatment, and ultrafine pulverization have high requirements for equipment. Methods such as disodium hydrogen phosphate treatment and tartaric acid treatment may cause residues, while methods such as enzymatic hydrolysis and microbial fermentation are costly. And the scope of application is not wide enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Citrus peel (citrus peel dregs obtained after fresh citrus juice is dried, containing about 12% pectin) is crushed and passed through a 40-mesh sieve, and mixed with 0.5% (w / v) hydrogen peroxide solution according to the ratio of solid to liquid Mix 1:20, adjust the pH to 8.5, mix well, incubate at 30°C for 2 hours, cool to room temperature, adjust the pH to 7.0, add an equal volume of absolute ethanol, let stand for 20 minutes, and centrifuge at 6000rpm After 15 minutes, remove the supernatant, and dry to constant weight at 55° C. to obtain citrus fiber. Determination of its water holding capacity and swelling capacity.

[0047] Under this condition, the yield of citrus fiber was 60.92%, the water holding capacity of the measured citrus fiber was 16.36g / g, and the expansion force was 21.14mL / g.

Embodiment 2

[0049] Grind citrus peels (citrus peels obtained after fresh citrus juices are dried, containing about 12% pectin) and pass through a 60-mesh sieve, and mix them with 1% (w / v) hydrogen peroxide solution according to the ratio of solid to liquid Mix 1:25, adjust the pH to 10.5, mix well, incubate at 70°C for 3 hours, cool to room temperature, adjust the pH to 7.0, add an equal volume of absolute ethanol, let stand for 30 minutes, and centrifuge at 7000rpm After 15 minutes, the supernatant was removed, and dried to constant weight at 60° C. to obtain citrus fiber. Determination of its water holding capacity and swelling capacity.

[0050] Under this condition, the yield of citrus fiber is 65.27%, the water holding capacity of the measured citrus fiber is 18.55g / g, and the expansion force is 23.63mL / g.

Embodiment 3

[0052] The citrus peel (citrus peel dregs obtained by drying the fresh citrus juice, containing about 12% pectin) is crushed and passed through a 80-mesh sieve, and mixed with 1% (w / v) hydrogen peroxide solution according to the ratio of solid to liquid Mix 1:25, adjust the pH to 11.5, mix well, incubate at 50°C for 3 hours, cool to room temperature, adjust the pH to 7.0, add an equal volume of absolute ethanol, let stand for 30 minutes, and centrifuge at 8000rpm After 10 minutes, the supernatant was removed, and dried to constant weight at 65° C. to obtain citrus fiber. Determination of its water holding capacity, swelling capacity and pectin content.

[0053]Under this condition, the yield of citrus fiber was 67.02%, the measured water holding capacity of citrus fiber was 23.16g / g, swelling power was 29.58mL / g, and pectin content was 20.92%.

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Abstract

The invention provides a method for preparing citrus fibers from citrus pericarp. The citrus pericarp can be directly used as a raw material, modification is carried out through chemical treatment, astructure of water-insoluble dietary fibers is destroyed, the water-insoluble dietary fibers are partially converted into water-soluble dietary fibers, a part of pectin which is closely combined withthe water-insoluble dietary fibers is released, and the citrus fibers rich in pectin are prepared. The method is simple in process operation, short in production period, low in cost and high in yield.According to the method, the content of pectin in the citrus fibers is properly increased; the pectin-rich citrus fiber prepared by the method has positive influence on the processing adaptability, dispersion stability, physiological activity and other properties of the citrus fiber, so that the application range of the citrus fiber in the food industry is wider, and the pectin-rich citrus fiberhas the good industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of food additives, in particular to a method for preparing citrus fiber from citrus peel. Background technique [0002] my country is rich in citrus, and in addition to fresh food, citrus is also made into products such as canned citrus, fruit juice, jam and preserved fruit. At the same time, a large amount of citrus peels are also produced thereupon. If these citrus peel residues cannot be reasonably utilized, it will not only cause a waste of resources, but also have adverse effects on the environment. [0003] Dietary fiber refers to plant-based polysaccharides that are not digested and absorbed by the human body. According to water solubility, it can be divided into water-soluble dietary fiber (Water-soluble Dietary Fiber, SDF) and water-insoluble dietary fiber (Water-insoluble Dietary Fiber, IDF). It has physiological functions such as lowering blood pressure and blood sugar, preventing cancers such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/21A23L33/22A23L19/00
CPCA23L33/21A23L33/22A23L19/07
Inventor 齐军茹黄嘉仪
Owner SOUTH CHINA UNIV OF TECH
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