Preparation method for soluble dietary fiber with apple pomace as raw material

A technology for dietary fiber and apple pomace, which is applied in food preparation, food science, application and other directions, can solve the problems of environmental pollution, high degree of hydrolysis, low yield of soluble fiber, etc., and achieves reduction of production cost, simple preparation process, and environmental benefits. protective effect

Inactive Publication Date: 2011-09-21
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research and production of insoluble dietary fiber modification in my country is still in its infancy, and most of them are based on improving and increasing the water holding capacity and swelling capacity of insoluble dietary fiber. Separation of modified soluble and insoluble fiber is less , so that the characteristics of soluble fiber cannot be fully reflected in use, and the yield of soluble fiber is also low (about 15%)
[0003] At present, the modification and extraction methods of dietary fiber mainly include acid method, alkali method, puffing method, fermentation method, enzymatic hydrolysis metho

Method used

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  • Preparation method for soluble dietary fiber with apple pomace as raw material
  • Preparation method for soluble dietary fiber with apple pomace as raw material

Examples

Experimental program
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Embodiment 1

[0019] (1) Drying and puffing of apple pomace: put the apple pomace in a blast drying oven and dry until the water content is ≯7%, then take out the dried apple pomace and add water to stir, and after it is evenly stirred, use an extruder to puff it, and add water The weight is 20% of the weight of apple dry residue;

[0020] (2) soaking to extract soluble dietary fiber:

[0021] a. The puffed apple pomace is crushed to 50 meshes, then the apple pomace is dissolved in water at a weight ratio of 1:30 by the apple pomace and water, and 1.0% of the mass of the apple pomace is added simultaneously with α-amylase and 2.0% For papain, soak for 1 hour at 50°C and pH 6.8, then heat and boil for 5 minutes to inactivate protease and amylase;

[0022] b. Filter the above soaking liquid to obtain the filtrate and filter residue, add 95% ethanol solution 4 times the volume of the filtrate to the filtrate, let it stand for 1 hour and then filter it with suction, and dry the obtained solubl...

Embodiment 2

[0029] (1) Drying and puffing of apple pomace: put the apple pomace in a blast drying oven and dry until the water content is ≯7%, then take out the dried apple pomace and add water to stir, and after it is evenly stirred, use an extruder to puff it, and add water The weight is 23% of apple dry residue weight;

[0030] (2) soaking to extract soluble dietary fiber:

[0031] a. The puffed apple pomace is crushed to 60 meshes, then the apple pomace is dissolved in water at a weight ratio of 1:40 by the apple pomace and water, and 1.0% of the mass of the apple pomace is added simultaneously with α-amylase and 2.0% For papain, soak for 1 hour at 55°C and pH 6.5, then heat and boil for 3 minutes to inactivate protease and amylase;

[0032] b. Filter the above soaking liquid to obtain the filtrate and filter residue, add 95% ethanol solution 4 times the volume of the filtrate to the filtrate, let it stand for 1 hour and then filter it with suction, and dry the obtained soluble cellu...

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Abstract

The invention discloses a preparation method for a soluble dietary fiber with apple pomace as a raw material. According to the method, an expanding method and an enzymatic hydrolysis method are combined. By the application of an expansion process, the structures of cellulose molecules become loose, and partial glycosidic bonds are broken, so that partial insoluble dietary fibers are transformed into soluble ones. After separation of the insoluble dietary fibers and the soluble dietary fibers, the expanded insoluble dietary fibers, which have the loose molecular structures, are hydrolyzed by utilizing a cellulase; and then the insoluble dietary fibers are further transformed into soluble dietary fibers. According to the invention, the modification of the insoluble dietary fibers in the apple pomace enables the insoluble dietary fibers to become high-quality soluble dietary fibers, so that an achievement rate of the soluble dietary fibers can substantially be enhanced as well as water binding capacity and expansibility of dietary fibers can also be improved. According to the test, the achieve rate of the soluble dietary fibers can reach 21.2%; the water binding capacity and expansibility can be enhanced by 110.3% and 7.0% respectively.

Description

technical field [0001] The invention relates to a method for preparing dietary fiber, in particular to a method for preparing soluble dietary fiber from apple pomace. Background technique [0002] At present, dietary fiber has been called the "seventh largest nutrient" alongside protein, carbohydrates, fat, water, minerals and vitamins by nutritionists and medical scientists, and its sources mainly include fruits, vegetables and grains. Dietary fiber is divided into insoluble fiber (IDF) and soluble fiber (SDF). There are many varieties and large quantities of foods containing insoluble dietary fiber, mainly found in wheat bran, corn bran, celery, fruit peels and root vegetables, and a large part of these substances are by-products of food processing. Because insoluble dietary fiber has rough and poor taste sensory properties in food, by-products containing a large amount of insoluble dietary fiber are often used in the production and processing of feed. The research and p...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L1/308A23L19/00
Inventor 魏决郭玉蓉黄卫
Owner CHENGDU UNIV
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