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Extraction method of rice bran polysaccharide

A technology of rice bran polysaccharide and extraction method, which is applied in the field of extraction of rice bran polysaccharide and traditional Chinese medicine raw materials, can solve the problems of unfavorable industrialization, long time consumption, high production cost, etc., and achieve improved extraction rate and purity, environmental friendliness, and easy operation Effect

Active Publication Date: 2015-10-28
HEBEI KEXING PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned extraction and purification process of rice bran polysaccharide has disadvantages such as cumbersome process, long time consumption, high energy consumption, low yield, high production cost, and unfavorable industrialization.

Method used

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  • Extraction method of rice bran polysaccharide
  • Extraction method of rice bran polysaccharide
  • Extraction method of rice bran polysaccharide

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Experimental program
Comparison scheme
Effect test

Embodiment １

[0033] Embodiment 1 A kind of extraction method of rice bran polysaccharide

[0034] A method for extracting rice bran polysaccharides, carried out in accordance with the following sequence of steps:

[0035] ① decoction

[0036] Take rice bran, add saturated Ca(OH) 8 to 20 times the mass of rice bran 2 Solution, boiled, kept in a slightly boiling state for 0.5-2 hours, then lowered to room temperature, and completed one decoction; repeated decoction for 1-3 times, filtered, and combined filtrates to obtain decoction P1;

[0037] ② centrifugal

[0038] Take the above-mentioned decoction P1 and perform centrifugation to remove insoluble impurities to obtain supernatant Q1;

[0039] ③ concentrated

[0040] The above supernatant Q1 is placed in a rotary evaporator and concentrated under reduced pressure at 60-100°C to 1 / 10-1 / 3 of the volume / weight of the supernatant Q1 to obtain a concentrated solution C1;

[0041] ④Removal of impurities

[0042] Put the above concentrated...

Embodiment 2-6

[0048] Example 2-6 Extraction method of rice bran polysaccharide

[0049] Embodiment 2-6 is respectively a kind of extraction method of rice bran polysaccharide, and its difference with embodiment 1 is that the technical parameters involved in the extraction method are different, specifically see the following table:

[0050]

Embodiment 7

[0051] The selection of embodiment 7 alkaline reagent

[0052] The inventor tries to adopt other alkaline reagents, such as NaOH, KOH, NH 3 etc., to destroy the combination of rice bran polysaccharide and other components, but these alkaline reagents have problems such as inability to remove phytic acid during use, resulting in a decrease in extraction rate and purity. The specific results are shown in the following table:

[0053]

[0054] Simultaneously for Ca(OH) 2 The amount of the solution was investigated, and it was found that when the amount is less than 8 times, it will be easily evaporated to dryness and the extraction will not be complete; while if the amount is more than 20 times, the amount of extract will be large and it will not be easy to process later. The details are shown in the following table:

[0055]

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Abstract

The invention discloses a method for extracting rice bran polysaccharides. According to the method, after carrying out the steps of decoction, centrifugation, concentration, impurity removal, precipitate removal and the like, the target product, namely the rice bran polysaccharides, is prepared from supernatant. According to the method, the rice bran polysaccharides in rice bran are prevented from being combined with other ingredients by adopting a Ca(OH)2 solution, so that the extraction ratio of the rice bran polysaccharides is increased and reaches 7.6-8.5%, and the purity of the rice bran polysaccharides is improved and reaches 68.1-70.3%; meanwhile, impurities, such as protein and the like, are removed by adopting an adsorption clarifying technology. The method has the characteristics of simplicity and convenience in operation, environmental friendliness, low energy consumption, low cost, applicability to industrial production, and the like, and is suitable for extracting the rice bran polysaccharides from the rice bran.

Description

technical field [0001] The invention belongs to the field of extracting natural active ingredients, and relates to a method for extracting traditional Chinese medicine raw materials, in particular to a method for extracting rice bran polysaccharide. Background technique [0002] Rice bran polysaccharide is a glucan mainly composed of α-1,6 glycosidic bonds existing in rice bran. Active and humoral immunity also contribute to some extent. [0003] At present, most of the extraction of rice bran polysaccharides from rice bran adopts hot water extraction method, and the extraction rate is low; although there are some new extraction technologies such as ultra-micro, microwave, ultrasonic, etc., which can increase the extraction rate, the increase is not large, because these The method is difficult to destroy the combination of rice bran polysaccharide and other ingredients. [0004] Yu Lanling et al., "Comparison of Several Extraction Processes of Rice Bran Polysaccharides", "...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 牛志勇王新马金波王志香陈淑芳郭艳玉
Owner HEBEI KEXING PHARMA
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