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Method for preparing dietary fibers from wastes and byproducts generated in tangerine processing

A dietary fiber and waste technology, applied in food preparation, application, food science, etc., can solve the problems of insufficient attention to the recycling of fruit peels, environmental pollution, waste of resources, etc., and achieve easy industrial production, increase economic value, and low production costs Effect

Active Publication Date: 2012-12-05
ZHEJIANG JINMING BIOLOGICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country's fruit processing enterprises do not pay enough attention to the recycling of fruit peels. Most of the traditional processing industries landfill or process these peels into feed, which not only causes waste of resources, but also pollutes the environment to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Pretreatment of citrus processing waste and by-products: recover citrus processing waste and by-products, wash and dry citrus peels.

[0033] (2) Pretreatment of citrus peels: Boil the citrus peels obtained in step (1) in a 5% NaCl aqueous solution for 5 minutes, pick them up and rinse them in running water for 20 minutes, pick them up and drain them, and then soak them in 0.25% lemon Boil in acid solution for 15 minutes, remove and drain.

[0034] (3) Enzymolysis: Add pectinase and cellulase to the orange peel obtained in the above step (2), add 120 g of pectinase and 80 g of cellulase or add 200 g of helicase to each ton of orange peel. Enzymolysis was carried out at 45°C and pH 5.0 for 1.5 hours, and the enzyme was inactivated after enzymolysis.

[0035] (4) Squeeze and filter: squeeze the enzymatically hydrolyzed wet citrus peel and pomace obtained in step (3) in a screw press at a temperature of 55°C and a shaft speed of 25r / min, and filter the residue for lat...

Embodiment 2

[0041](1) Pretreatment of citrus processing waste and by-products: recover citrus processing waste and by-products, separate citrus peel, citrus capsule residue, citrus network and citrus gizzard, wash and drain.

[0042] (2) Enzymolysis: Add pectinase and cellulase to one or more mixtures of citrus sac residue, citrus network and citrus gizzard obtained in the above step (1), adding 50g per ton of material Pectinase and 50 g of cellulase or 100 g of compound enzymes added with cellulase and amylase were used for enzymolysis at a temperature of 35°C and a pH value of 4.0 for 3 hours, and the enzyme was inactivated after enzymolysis.

[0043] (3) Squeeze and filter: squeeze the enzymatically hydrolyzed material obtained in step (2) in a screw press at a temperature of 50°C and a shaft speed of 30r / min, and filter the residue for later use.

[0044] (4) Drying and crushing: Dry the filter residue obtained in step (3) at 50°C until the moisture content reaches 20%, and crush it t...

Embodiment 3

[0049] (1) Pretreatment of citrus processing waste and by-products: recycle citrus processing waste and by-products, separate citrus peels, citrus sac residues, citrus tangerine, citrus gizzard residues, etc., wash, drain or dry .

[0050] (2) Citrus peel pretreatment: Boil the orange peel obtained in step (1) in 1% NaCl aqueous solution for 20 min, pick it up and rinse it in running water for 20 min, pick it up and drain it, and then soak it in 0.2% citric acid aqueous solution Boil for 5 minutes, remove and drain.

[0051] (3) Enzymolysis: Mix the orange peel obtained in step (2) with the citrus sac residue, citrus tangerine core, and citrus gizzard residue obtained in step (1) at a ratio of 1:1:1:1, and then add helicase and cellulase, add 120 g helicase and 120 g cellulase per ton of material, enzymolyze at a temperature of 55°C and a pH value of 6.0 for 2.5 hours, and inactivate the enzyme after enzymolysis.

[0052] (4) Squeeze and filter: squeeze the enzymatically hyd...

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Abstract

The invention relates to a method for preparing dietary fibers from wastes and byproducts generated in tangerine processing, and belongs to the technical field of production methods for dietary fibers. The method comprises the following steps of: 1) pretreating the wastes and the byproducts generated in tangerine processing; 2) pretreating tangerine fruit peels; 3) performing enzymolysis; 4) squeezing and filtering; 5) drying and crushing; 6) extruding, modifying and activating; and 7) performing superfine grinding at low temperature. The method is simple, convenient to operate, low in production cost and stable in quality of products and is suitable for industrial production, and the water retention property and expansibility of the tangerine dietary fibers are superior to those of the ordinary dietary fiber products; by adding natural fruit and vegetable ferment powder and five-cereal ferment powder which have special nutrients, dietary fibers from wastes and byproducts generated in tangerine processing have the effects of improving the immunity of a human body, activating cells, promoting metabolism and the like, and can be used as a replenisher of the dietary fibers, functional foods and the like, so that the economic value of tangerines is improved, and the comprehensive utilization of tangerine resources is realized.

Description

technical field [0001] The invention belongs to the technical field of dietary fiber production methods, and in particular relates to a method for preparing dietary fiber by using citrus processing waste and by-products. Background technique [0002] Dietary fiber is mainly polysaccharides and lignin that cannot be digested and absorbed by the human body, and is called the "seventh largest nutrient". Studies have shown that dietary fiber has very important physiological functions for human health. Dietary fiber can be divided into soluble dietary fiber (Soluble dietary fiber, SDF) and insoluble dietary fiber (Insoluble dietary fiber, IDF) according to its water solubility. SDF has the functions of lowering human serum cholesterol, preventing gallstones, diabetes, hypertension and heart disease, etc. effect; while IDF has a good effect on preventing obesity, constipation, and intestinal cancer. [0003] Citrus is a plant of the Rutaceae Citrus subfamily. Citrus has high nu...

Claims

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Application Information

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IPC IPC(8): A23L1/308A23L1/09
Inventor 毛建卫葛青方瑜方利明方晟
Owner ZHEJIANG JINMING BIOLOGICAL SCI & TECH
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