Novel process for extracting not smaller than 98% of natural ferulic acid from rice bran oil processing leftovers

A technology of leftovers and rice bran oil, which is applied in the field of ferulic acid, can solve the problem of low yield and achieve the effects of low production cost, low heavy metals, and high product yield

Active Publication Date: 2014-02-05
GUANGXI DAIYUAN VEGETABLE PROD
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  • Novel process for extracting not smaller than 98% of natural ferulic acid from rice bran oil processing leftovers
  • Novel process for extracting not smaller than 98% of natural ferulic acid from rice bran oil processing leftovers

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Embodiment Construction

[0029] refer to figure 1 , a new technique for extracting ≥98% natural ferulic acid from the leftovers of processed rice bran oil of the present invention, its technological process is:

[0030] Processing leftovers of rice bran oil→n-hexane degreasing and decolorization→deodorization of edible ethanol→saponification of sodium hydroxide aqueous solution→acidification and suction filtration→ion exchange resin refining→decolorization of activated carbon and decolorizing clay→resin removal of heavy metal ions→pervaporation separation Ethanol and crystallization products→suction filtration and washing→vacuum drying→finished natural ferulic acid.

[0031] The specific processing technology includes the following steps:

[0032] 1. Degreasing and decolorizing of n-hexane: Take 400kg of leftovers from processing rice bran oil and put them into 3m 3 Add 2.0 and 1.5 times the amount of n-hexane to the extraction tank equipped with heating and an external ultrasonic generator. Mainta...

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Abstract

The invention discloses a novel process for extracting not smaller than 98% of natural ferulic acid from rice bran oil processing leftovers. The process comprises the following steps: with the rice bran oil processing leftovers as an extraction raw material, degreasing and decoloring the extraction raw material through n-hexane, and deflavoring through more than 80% of edible alcohol; then, saponifying the extraction raw material twice through a sodium hydroxide aqueous solution with a certain concentration and temperature, naturally filtering the saponification solution through a stainless steel filter screen, regulating the saponification solution through dilute sulfuric acid, and carrying out suction filtration; regulating the pH of precipitate to 9-10 through dilute alkali, refining the precipitate through ion exchange resin, eluting impurities, desorbing through alkaline ethanol, decoloring and filtering; removing harmful metal ions in the filtrate through a resin column; and separating ethanol and a product heavy crystal from effluent through a pervaporation membrane technology, washing, suction filtering and vacuum drying the crystal product to obtain the natural ferulic acid. The process disclosed by the invention can be used for extracting and separating the natural ferulic acid with purity larger than 98% and having a variety of significant physiological activities, thereby not only turning waste into treasure and improving the resource utilization rate, but also being simple in manufacturing process, low in production cost, high in product yield, low in requirements on production equipment and easy to control and realize the production process.

Description

technical field [0001] The invention relates to ferulic acid, in particular to a new process for extracting more than 98% natural ferulic acid from leftovers of processed rice bran oil. Background technique [0002] Ferulic acid is one of the derivatives of cinnamon acid. There are two types, cis and trans. The cis is a yellow oil, and the trans is a white to slightly yellow powder. It generally refers to the trans. The relative molecular mass is 194.19, and the melting point is 174°C. [0003] Ferulic acid is slightly soluble in cold water, soluble in hot water, poor stability in aqueous solution, easy to decompose when exposed to light; easily soluble in ethanol, methanol, acetone, insoluble in benzene, petroleum ether, good pH stability. Its structural formula is as follows: [0004] [0005] Natural ferulic acid derived from rice bran is mainly used as a raw material for the production of natural vanillin, and it is currently the only raw material internationally re...

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Application Information

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IPC IPC(8): C07C59/64C07C51/42C07C51/48C07C51/47
CPCC07C51/42C07C59/64
Inventor 刘庚贵唐克军周迪平廖智强黄林慧
Owner GUANGXI DAIYUAN VEGETABLE PROD
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