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Degumming method of rice bran oil

A degumming method and rice bran oil technology, which are applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of decolorization of rice bran oil, adverse effects of refining processes, complicated equipment operation, and high residual phosphorus content in oil, and are beneficial to removing, Simple process and low residual phosphorus

Active Publication Date: 2020-10-20
BENGBU QIONGHUAI GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter two are difficult to be popularized and applied due to high cost and complicated equipment operation. Acid degumming is still the mainstream degumming treatment method.
However, acid degumming still has low degumming efficiency and high residual phosphorus in the oil after degumming, which will bring adverse effects to the subsequent decolorization and refining processes of rice bran oil.

Method used

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  • Degumming method of rice bran oil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] A degumming method for rice bran oil, comprising the following steps:

[0020] S1. Mix the acid solution of carboxymethyl cellulose and rice bran crude oil in a volume ratio of 0.2:100, heat to 65°C, and then keep stirring for 20 minutes. The acid solution of carboxymethyl cellulose is made of carboxymethyl cellulose It is obtained by uniformly dispersing in an aqueous phosphoric acid solution with a concentration of 85%, and in the acid solution of carboxymethyl cellulose, the content of carboxymethyl cellulose is 1% by weight;

[0021] S2, the aqueous solution of the hydroxypropyl guar gum that concentration is 0.4wt% is heated to 65 ℃, then adds in the material that step S1 obtains, first under the condition of 300W supersonic treatment 8min, then insulated and stirred for 20min, through rotating speed is 3500r / Centrifuge for 15 minutes under the condition of 1 min, and take the upper layer of oil to obtain the degummed rice bran oil, wherein the volume ratio of the...

Embodiment 2

[0023] A degumming method for rice bran oil, comprising the following steps:

[0024] S1. Mix the acid solution of carboxymethyl cellulose and crude rice bran oil in a volume ratio of 0.25:100, heat to 70°C, and then keep stirring for 25 minutes. The acid solution of carboxymethyl cellulose is made of carboxymethyl cellulose Obtained by uniform dispersion in an aqueous solution of oxalic acid with a concentration of 20%, and in the acid solution of carboxymethyl cellulose, the content of carboxymethyl cellulose is 1.5wt%;

[0025] S2, the aqueous solution of the hydroxypropyl guar gum that concentration is 0.5wt% is heated to 70 ℃, then adds in the material that step S1 obtains, first ultrasonic treatment 5min under 400W condition, then insulation and stirring 25min, through rotating speed is 4500r / Centrifuge for 10 minutes under the condition of 1 min, and take the upper layer of oil to obtain the degummed rice bran oil, wherein the volume ratio of the aqueous solution of hy...

Embodiment 3

[0027] A degumming method for rice bran oil, comprising the following steps:

[0028] S1. Mix the acid solution of carboxymethyl cellulose and crude rice bran oil in a volume ratio of 0.3:100, heat to 80°C, and then keep stirring for 30 minutes. The acid solution of carboxymethyl cellulose is made of carboxymethyl cellulose It is uniformly dispersed in an aqueous solution of citric acid with a concentration of 50%, and in the acid solution of carboxymethyl cellulose, the content of carboxymethyl cellulose is 2wt%;

[0029] S2. Heating the aqueous solution of hydroxypropyl guar gum with a concentration of 0.6wt% to -80°C, then adding it to the material obtained in step S1, first ultrasonically treating it at 500W for 4min, then insulated and stirring for 30min, and passing through at a speed of 5000r Centrifuge and separate for 5 minutes under the condition of 1 / min, take the upper layer of oil, and obtain the degummed rice bran oil, in which the volume ratio of the aqueous sol...

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Abstract

The invention discloses a degumming method of rice bran oil. The method comprises the following steps: S1, mixing an acid solution of carboxymethyl cellulose and rice bran crude oil, heating to a temperature of 65-80 DEG C, and carrying out thermal insulation stirring for 20-30 min; and S2, heating an aqueous solution of hydroxypropyl guar gum to 65-80 DEG C, then adding the heated aqueous solution of hydroxypropyl guar gum into the material obtained in step S1, carrying out ultrasonic treatment for 4-8 min, then carrying out heat preservation and stirring for 20-30 min, carrying out centrifugal separation, and taking upper-layer grease, so as to obtain the rice bran oil after degumming treatment. The degumming method disclosed by the invention has the advantage of low residual phosphoruscontent of the degummed rice bran oil, can greatly improve the degumming efficiency of the rice bran oil degumming process, is beneficial to subsequent decolorization and refining treatment, and is simple in process, low in cost and convenient to popularize and apply.

Description

technical field [0001] The invention relates to the technical field of rice bran oil refining, in particular to a method for degumming rice bran oil. Background technique [0002] Rice bran is a by-product in the process of processing rice into rice, which accounts for about 6% of brown rice and is the part with the highest oil content in rice grains. Rice bran oil is an edible oil extracted and refined from rice bran. It is rich in oryzanol, sitosterol, vitamins and other nutrients, and has extremely high nutritional value and good health effects. Because the crude rice bran oil obtained by direct pressing is rich in pigments, colloids and other impurities, the crude rice bran oil needs to go through degumming, decolorization, deacidification and other refining processes to obtain a refined oil that meets edible standards. [0003] Rice bran crude oil contains a large amount of colloidal substances, mainly phospholipids, and also includes proteins and their decomposition p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/02
CPCC11B3/02Y02W30/74
Inventor 方厚凯宋代江
Owner BENGBU QIONGHUAI GRAIN & OIL
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