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Physical distillation-chemical alkali refining combined deacidification process for rice oil

A rice oil and physical technology, applied in the field of rice oil deacidification technology, can solve the problems of large loss of physiologically active substances, high content of free fatty acids, deep oil color, etc., and achieve the goal of retaining physiologically active substances, low acid value and less loss Effect

Pending Publication Date: 2020-07-10
JIANGSU KANG ZHI YUAN GRAIN & OIL
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Problems solved by technology

The oil refined by physical distillation method has deep color and high content of free fatty acid; chemical alkali refining method has high refining consumption and great loss of physiologically active substances

Method used

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  • Physical distillation-chemical alkali refining combined deacidification process for rice oil

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Embodiment

[0024] refer to figure 1 , rice oil physical distillation-chemical alkali refining combined deacidification process, including the use of rice bran crude oil with an acid value of generally 20-30mgKOH / g, including the following steps:

[0025] S1, weigh raw rice bran crude oil, heat the rice bran crude oil to 80-85°C, add hot water at a temperature of 90°C during the stirring process, stir in the reactor for 40 minutes, then enter the butterfly centrifuge for centrifugation, Obtain degummed oil with a water content of 0.2%-0.5%. Hydration degumming utilizes the combination of water and hydrophilic phospholipids in the oil to form flocs that precipitate and separate from the oil;

[0026] S2, heat up the degummed oil containing 0.2%-0.5% in S1 to about 95°C, enter the vacuum dryer for dehydration and drying, and the dried degummed oil enters the cooler to cool to 40°C, and transfers it to the degummed oil storage tank;

[0027] S3, use a dry pump to transfer the degummed oil i...

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Abstract

The invention discloses a physical distillation-chemical alkali refining combined deacidification process for rice oil, which comprises the following step: S1, weighing raw material rice bran crude oil, and heating the rice bran crude oil to 80-85 DEG C. The process has the advantages that a physical distillation-chemical alkali refining combined deacidification method is adopted, that is, firstly, the acid value of the rice bran crude oil is reduced to 4-5 mg KOH / g through a physical distillation method, at the moment, almost all oryzanol and most vitamin E are reserved in the rice bran crudeoil, and the color and luster of the rice bran oil are ideal; then the acid value is further reduced to be within the product standard through a chemical alkali refining method, the refining consumption is low at the moment, and losses of physiologically active substances such as oryzanol and vitamin E are small. Therefore, the physical distillation-chemical alkali refining combined deacidification method overcomes the defects of a traditional single physical distillation method and a traditional chemical alkali refining method, rice bran oil low in acid value and ideal in color can be obtained, and oryzanol, vitamin E and other physiologically active substances in the rice bran oil can be effectively reserved.

Description

technical field [0001] The invention relates to the technical field of rice oil deacidification technology, in particular to the combined deacidification process of rice oil physical distillation-chemical alkali refining. Background technique [0002] The fat in rice is extracted and separated by pressing or leaching, which is rice oil. It is divided into two types: rice bran oil and rice oil: rice bran oil is extracted from rice bran (the protective cortex of rice such as skin, seed coat, and outer endosperm), and rice bran oil is extracted from rice oil (rice germ and aleurone layer in clean production The oil extracted from the precision milled rice in the workshop) is rice oil, and the rice is called "the source of nutrition given by God". [0003] Because rice bran is very easy to rancid, it brings difficulties to the refining of rice oil, making the refining rate of rice oil low. The deacidification methods currently used in the industrialization of rice bran oil inc...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/06C11B3/10C11B3/12C11B3/16
CPCC11B3/001C11B3/008C11B3/06C11B3/10C11B3/12C11B3/16
Inventor 林亲录吴伟
Owner JIANGSU KANG ZHI YUAN GRAIN & OIL
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