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Soluble dietary fiber from rice bran, its production process and its application

A technology of dietary fiber and production process, applied in the field of biochemical preparation, can solve the problems of insufficient raw materials and high price, and achieve the effects of increasing yield, high yield and improving yield

Active Publication Date: 2017-01-04
JIANGSU KANG ZHI YUAN GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current dietary fiber processing mostly uses fruit and vegetable residues such as apple pomace and pear pomace. The main problem is that the raw materials are not sufficient, limited by the raw materials and seasons of the juice factory, and the raw material price is relatively expensive for rice bran. Therefore, using rice bran to develop Dietary fiber can not only save cost, but also be used in resource utilization of rice bran

Method used

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  • Soluble dietary fiber from rice bran, its production process and its application

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Effect test

Embodiment 1

[0036] A production process of rice bran soluble dietary fiber, comprising the following steps:

[0037] (1) Pretreatment of rice bran: the rice bran is crushed to 20 mesh, soaked in 0.35% hydrochloric acid solution for 10 h according to the ratio of solid to liquid 1:28, washed with water until the pH is neutral, and steamed at 121 °C and 0.18 MPa. Blasting for 25 minutes;

[0038] (2) Enzymolysis: Add α-amylase to rice bran after steam explosion under stirring, enzymolysis temperature 40°C, dosage 1.5%, enzymolysis time 40min; add cellulase after enzymolysis, enzyme dosage 0.5% Enzymolyze in a water bath at 35°C for 50 minutes, and keep stirring;

[0039] (3) Extraction and separation: add 25 times of water to the enzymatically hydrolyzed rice bran, and conduct cyclic ultrasonic extraction. The extraction conditions are: ultrasonic power 1000W, ultrasonic duty ratio 1:2, ultrasonic time 100min; cycle speed 900rpm, ultrasonic extraction ends Afterwards, the solid-liquid sep...

Embodiment 2

[0043] A production process of rice bran soluble dietary fiber, comprising the following steps:

[0044] (1) Pretreatment of rice bran: crush rice bran to 60 mesh, add 0.5% hydrochloric acid solution to soak for 15 hours according to 1:30 solid-liquid ratio, wash with water until the pH is neutral, and carry out steam explosion under the conditions of 125°C and 0.20 MPa 30min;

[0045] (2) Enzymolysis: Add α-amylase to rice bran after steam explosion under stirring, enzymolysis temperature 45°C, enzyme dosage 1.5%, enzymolysis time 40min; after enzymolysis, add cellulase, enzyme dosage 1.5 %Enzymolysis in a water bath at 35°C for 50 min with constant stirring;

[0046] (3) Extraction and separation: Add 30 times of water to the enzymatically hydrolyzed rice bran, and perform circular ultrasonic extraction. The extraction conditions are: ultrasonic power 1500W, ultrasonic duty ratio 1:3, ultrasonic time 110min; cycle speed 1000rpm, ultrasonic extraction ends Afterwards, the s...

Embodiment 3

[0050] A production process of rice bran soluble dietary fiber, comprising the following steps:

[0051] (1) Pretreatment of rice bran: the rice bran is crushed to 20 mesh, soaked in 0.1% hydrochloric acid solution for 15 hours according to the ratio of solid to liquid at 30, washed with water until the pH is neutral, and subjected to steam explosion for 20 minutes at 120 °C and 0.20 MPa ;

[0052] (2) Enzymolysis: Add α-amylase to rice bran after steam explosion under stirring, enzymolysis temperature 45°C, enzyme dosage 1%, enzymolysis time 40min; after enzymolysis, add cellulase, enzyme dosage 1.5 % Enzymolysis in a water bath at 35°C for 35 minutes, with constant stirring;

[0053] (3) Extraction and separation: add 30 times water to the enzymatically hydrolyzed rice bran, and carry out cyclic ultrasonic extraction. The extraction conditions are: ultrasonic power 500 W, ultrasonic duty ratio 1:3, ultrasonic time 50 min; cycle speed 1000 rpm, ultrasonic After the extracti...

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Abstract

The invention relates to a rice bran soluble dietary fiber, a production technology and application thereof, and belongs to the field of comprehensive utilization and deep processing of grains. The production technology comprises the following steps: rice bran steam explosion pretreatment, enzymolysis, extraction, concentration, alcohol precipitation and drying. The obtained dietary fiber has higher water-holding capability, oil-holding capacity and expansive force, improves the physiological activity of reducing blood sugar, reducing cholesterol and oxidation resistance and the like, and can be widely applied to the fields of food, health care products and the like.

Description

technical field [0001] The invention belongs to the field of biochemical preparation, and in particular relates to a production process and application of rice bran soluble dietary fiber. [0002] technical background [0003] Rice is the largest grain variety in my country. The current annual output is about 185 million tons. It accounts for 42% of the total grain output of the country. Rice production accounts for 37% of the total food production in the world. In the process of processing rice into polished rice, the shell and the seed coat, pericarp, perisperm, paste layer and embryo that account for about 10% of the total weight must be removed. The traditional rice bran, which is the current national standard rice bran, is mainly composed of seed coat, seed coat, The outer endosperm, aleurone layer and germ are processed, so a small amount of rice husk and a certain amount of dust and microorganisms will be mixed in during the processing, so it can only be used for fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L33/22
CPCA23L33/21A23P10/28A23V2002/00A23V2250/5116A23V2250/5118A23V2250/02A23V2250/15A23V2250/5114A23V2200/3262A23V2300/48A23V2300/10
Inventor 李勃谢云飞刘良忠石韧
Owner JIANGSU KANG ZHI YUAN GRAIN & OIL
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