Rice bran first-level oil refinement production method

Abstract

The present invention relates to a manufacturing method of refining rice bran top oil, which can effectively refining top oil from the rice bran and satisfy the people requirement to the health dieting. The invention includes the following steps: (1) crude oil filtering; (2) phosphoric acid degumming and light alkali alkali refining; (3) washing, drying; (4) dewaxing; (5) a primary decolorizing; (6) physical deacidification; (7) secondary alkali refining; (8) iron removing; (9) washing; (10) drying; (11) secondary decolorizing; (12) deodorization; (13) degreasing. The invention adopts a mode of combining the physical refining and chemical refining to realize a large-scale production of the rice bran top oil, provides a favorable technique to the rice bran deep-processing, improves the extraction rate from traditionally 55-60% to 75-80%, saves materials and reduces environmental pollution, has huge economic and social benefits. The invention is a major innovation to the edible rice bran oil production.

Description

1. Technical field [0001] The invention relates to the field of chemical industry, in particular to a production method for refining primary rice bran oil. 2. Background technology [0002] Rice bran contains not only rich and high-quality protein, but also rich and high-quality fat. In the fatty acid composition of rice bran oil, unsaturated fatty acid is more than 80%, essential fatty acid (mainly refers to linoleic acid) reaches 20-30%, and is rich in oryzanol. The content of oryzanol in the rice bran layer is generally 0.3-0.5%. The rice bran is separated from the bran, tempered, extruded and granulated, and after drying, the oryzanol is dissolved in the oil and extracted together with the mixed oil through solvent leaching. The content of oryzanol in crude rice bran oil is about 1.8-2.5%, and it is also a natural raw material for extracting oryzanol. [0003] Rice bran oil produced from rice bran is low in linolenic acid and high in vitamin E. Compared with other ed...

AI Technical Summary

Problems solved by technology

[0004] With the development of the oil industry and the continuation of oil deep processing, more and more attention has been paid to the comprehensive utilization of rice bran, and various researches have been carried out. Due to the particularity of rice bran, the acid value of crude oil is high, and the color is difficult to remove. In the production process, the single use of chemical refining has caused a large amount of neutral oil loss, and the product quality is poor, which cannot meet the needs of people's healthy diet. Therefore, how to solve the people's needs for refining edible rice bran first-grade oil from rice bran A serious technical problem

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