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Method for separating and extracting natural ferulic acid from rice bran oil nigre containing oryzanol

A technology of rice bran oil and oryzanol, which is applied in the field of plant extraction and separation, can solve the problems of low efficiency of natural ferulic acid, environmental pollution and complicated processing procedures

Active Publication Date: 2020-10-30
GUANGXI DAIYUAN VEGETABLE PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Aiming at the defects in the prior art of extracting and preparing natural ferulic acid such as low efficiency, polluting the environment, and complicated processing procedures, the present invention provides a raw material for separating and extracting natural ferulic acid with a content of ≥98% from rice bran oil soapstock containing oryzanol. The method has the advantages of simple procedure, less loss, high extraction efficiency, low production cost, no toxic and harmful solvents are used in the production process, and no pollution to the environment

Method used

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  • Method for separating and extracting natural ferulic acid from rice bran oil nigre containing oryzanol

Examples

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Effect test

Embodiment 1

[0047] A method for separating and extracting natural ferulic acid from rice bran oil soapstock containing oryzanol is:

[0048] (1) Saponification: Add 3 times the weight of sodium hydroxide according to the weight of rice bran oil saponin oryzanol, add water to make the concentration of lye 25%, calculate with the total volume of water added and the water in the raw material, and add a mass volume ratio of 1 % sodium metabisulfite, and ammonium sulfate with a mass volume ratio of 2% are stirred and dissolved; rice bran oil soapstock containing oryzanol content is put into a heating reaction kettle, and the temperature is adjusted to 95°C, while carbon dioxide is pressurized to maintain a pressure of 4kgf / m2, and high-speed stirring Lower saponification for 4 hours;

[0049] (2) Extraction: After saponification, recover carbon dioxide gas for the next cycle, add 3 times the volume of raw material purified water, stir and extract for 30 minutes, filter naturally with a 100-mes...

Embodiment 2

[0057] A method for separating and extracting natural ferulic acid from rice bran oil soapstock containing oryzanol is:

[0058] (1) Saponification: add 3 times the weight of sodium hydroxide according to the weight of rice bran oil saponin oryzanol, add water to make the concentration of lye 28%, and calculate based on the total volume of the added water and the water in the raw material, the added mass volume ratio is 2 % sodium pyrosulfite, and ammonium sulfate with a mass volume ratio of 2% are stirred and dissolved; rice bran oil soapstock containing oryzanol content is put into a heating reaction kettle, and the temperature is adjusted to 95-98°C, while carbon dioxide is pressurized to maintain a pressure of 3kgf / m2, Saponification under high-speed stirring for 3 hours;

[0059] (2) Extraction: After saponification, recover carbon dioxide gas for the next cycle, add 2 times the volume of raw material purified water, stir and extract for 30 minutes, filter naturally with ...

Embodiment 3

[0067] A method for separating and extracting natural ferulic acid from rice bran oil soapstock containing oryzanol is:

[0068] (1) Saponification: Add 4 times the weight of sodium hydroxide according to the weight of rice bran oil saponin oryzanol, add water to make the concentration of the lye 30%, calculate based on the total volume of the added water and the water in the raw material, and add a mass volume ratio of 2 % sodium metabisulfite, and ammonium sulfate with a mass volume ratio of 1% are stirred and dissolved; rice bran oil soapstock containing oryzanol content is put into a heating reaction kettle, and the temperature is adjusted to 95-100°C, while carbon dioxide is pressurized to maintain a pressure of 5kgf / m2, Saponification under high-speed stirring for 5 hours;

[0069] (2) Extraction: After saponification, recover carbon dioxide gas for the next cycle, add 4 times the volume of raw material purified water, stir and extract for 30 minutes, filter naturally wi...

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Abstract

The invention discloses a method for separating and extracting natural ferulic acid from oryzanol-containing rice bran oil nigre, which comprises the following steps: by using oryzanol-containing ricebran oil nigre as a raw material, saponifying, extracting, carrying out acid precipitation separation, leaching, decolorizing, refining and drying in sequence to finally obtain the natural ferulic acid with the content of more than or equal to 98%. The method has the advantages of simple process, low loss, high extraction efficiency, low production cost, no use of toxic or harmful solvents in theproduction process, and no pollution to the environment. The content of the obtained product is greater than 98%, the color is white, 10% ethanol is dissolved, clarified and transparent, and carbon dots do not exist when the product passes through 0.45 mu m filter paper; the product naturalness can be judged through an isotope detection method accepted internationally, and the export requirementsof developed countries such as Europe and America are met.

Description

technical field [0001] The invention relates to plant extraction and separation technology, in particular to a method for preparing natural ferulic acid with an extraction content ≥ 98% by using rice bran oil soapstock containing oryzanol as a raw material. Background technique [0002] Ferulic acid is a kind of phenolic acid, which exists widely in plants in nature. Often cross-linked with lignin and polysaccharides to form part of the cell wall of plants, rarely in a free state. Its chemical name is 4-hydroxy-3-methoxycinnamon, which is a derivative of cinnamic acid (ie, cinnamic acid, 3-phenyl-2-acrylic acid), and has two structures: cis and trans. Trans-ferulic acid is white to slightly yellow crystals, and cis-form is yellow oil, often in the form of square crystals or fibrous crystals, generally referring to its trans-form. [0003] Its structural formula is as follows: [0004] [0005] Molecular formula: C10H10O4 [0006] CAS number: 1135-24-6 [0007] Molecu...

Claims

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Application Information

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IPC IPC(8): C07C27/02C07C51/02C07C51/47C07C51/43C07C59/64
CPCC07C51/09C07C51/02C07C51/47C07C51/43C07C59/64Y02W30/74
Inventor 杨荣唐克军李荣明秦福连雷素梅黄莉
Owner GUANGXI DAIYUAN VEGETABLE PROD
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