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Rice bran polysaccharide-peptide compound with high oxidation resistance and preparation method thereof

A rice bran polysaccharide and peptide complex technology, which is applied in the field of rice bran compound preparation, can solve the problems of less than 20% total utilization rate and waste of resources

Active Publication Date: 2021-11-05
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In animal production, rice bran is usually used as feed raw material, and its total utilization rate is less than 20%, resulting in waste of resources

Method used

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  • Rice bran polysaccharide-peptide compound with high oxidation resistance and preparation method thereof
  • Rice bran polysaccharide-peptide compound with high oxidation resistance and preparation method thereof
  • Rice bran polysaccharide-peptide compound with high oxidation resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 A kind of preparation method of high antioxidant rice bran polysaccharide-peptide complex

[0027] 1. Extraction of rice bran polysaccharide

[0028] The defatted rice bran is pulverized and passed through a 60-mesh sieve, distilled water 15 times the amount of defatted rice bran is added, the pH is adjusted to 3.5 with tartaric acid aqueous solution, and softened by soaking for ten minutes. Adjust the upper and lower limit temperature of the low-temperature circulating pump to 10°C to -4°C to ensure that the internal temperature of the homogenizer is at room temperature. Pour the mixed material into a high-pressure homogenizer, adjust to 80MPa, and homogenize 4 times, each time for 20 minutes; the obtained homogeneous solution is centrifuged at 4000r / min for 15 minutes to remove the precipitate, adjust the pH to neutral, and freeze-dry to obtain a molecular weight of Rice bran polysaccharides between 10k and 50kDa.

[0029] 2. Maillard reaction of polysac...

Embodiment 2

[0037] Example 2 A kind of preparation method of high antioxidant rice bran polysaccharide-peptide complex

[0038] 1. Extraction of rice bran polysaccharide

[0039] The degreased rice bran is pulverized and passed through a 60-mesh sieve, distilled water 20 times the amount of the defatted rice bran is added, the pH is adjusted to 3.8 with tartaric acid aqueous solution, and softened by soaking for ten minutes. Adjust the upper and lower limit temperature of the low-temperature circulating pump to 10°C to -4°C to ensure that the internal temperature of the homogenizer is at room temperature. Pour the mixed material into a high-pressure homogenizer, adjust to 90MPa, and homogenize 5 times, each time for 20 minutes; the obtained homogeneous solution is centrifuged at 4000r / min for 20 minutes to remove the precipitate, and after adjusting the pH to neutral, freeze-dry to obtain a molecular weight of Rice bran polysaccharides between 10k and 50kDa.

[0040] 2. Maillard react...

Embodiment 3

[0048] Example 3 A kind of preparation method of high antioxidant rice bran polysaccharide-peptide complex

[0049] 1. Extraction of rice bran polysaccharide

[0050] The defatted rice bran is crushed and passed through a 60-mesh sieve, distilled water 25 times the amount of defatted rice bran is added, the pH is adjusted to 4.0 with tartaric acid aqueous solution, and softened by soaking for ten minutes. Adjust the upper and lower limit temperature of the low-temperature circulating pump to 10°C to -4°C to ensure that the internal temperature of the homogenizer is at room temperature. Pour the mixed material into a high-pressure homogenizer, and then adjust it to 95MPa. After the pressure is stable, homogenize it 6 times, 20 minutes each time; centrifuge the obtained homogeneous solution at 4000r / min for 20 minutes to remove the precipitate, adjust the pH to neutral, and carry out The rice bran polysaccharide with a molecular weight between 10k and 50kDa was obtained by fr...

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Abstract

The invention provides a rice bran polysaccharide-peptide compound with high oxidation resistance and a preparation method thereof, and belongs to the technical field of rice bran compound preparation, and the method comprises the following steps: 1) taking defatted rice bran as a raw material, mixing the defatted rice bran with water, adding tartaric acid to adjust the pH value, pouring the mixture into a high-pressure homogenizer, conducting homogenizing to obtain a rice bran polysaccharide extracting solution, centrifuging the rice bran polysaccharide extracting solution, and conducting freeze-drying to obtain the rice bran polysaccharide with the relative molecular mass of 10kDa-50kDa; and 2) mixing the rice bran polysaccharide with the rice bran peptide, and carrying out Maillard reaction by adopting a dry method to obtain the polysaccharide-peptide compound. According to the method disclosed by the invention, the polysaccharide-peptide compound with high oxidation resistance can be obtained.

Description

technical field [0001] The invention belongs to the technical field of rice bran compound preparation, and in particular relates to a high antioxidant rice bran polysaccharide-peptide compound and a preparation method thereof. Background technique [0002] Rice bran is the main by-product of rice, but the comprehensive utilization rate of rice bran is low. Relevant international organizations have listed rice bran as one of the underutilized natural raw materials. About 65% of the nutrients are in rice bran. In animal production, rice bran is usually used as a feed material, and its total utilization rate is less than 20%, resulting in waste of resources. Rice bran polysaccharide (RBP) is mainly composed of xylose, rhamnose, mannose, galactose, arabinoxylan and glucose. RBP has significant effects in promoting the body's immunity, anti-inflammation, and anti-oxidation. [0003] The Maillard reaction is a reaction between hydroxyl compounds (reducing sugars) and amino com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
CPCC08B37/006C08B37/0003Y02P60/87
Inventor 谢明勇刘欢高刘辉付爱平
Owner NANCHANG UNIV
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