Preparation of natural ferulaic acid

A technology of ferulic acid and ferulic acid ester, applied in the field of preparation of natural ferulic acid, can solve the problems of increasing production cost, lengthening process flow, being insoluble in water, etc., saving production cost, improving production environment, The effect of omitting the consumption of organic solvents

Active Publication Date: 2009-05-20
ZHEJIANG DELEKANG FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blackfoot is a dense, high-viscosity, fat-soluble substance that is difficult to dissolve in water. Therefore, organic lower alcohols must be heated and stirred for a long time to fully hydrolyze under alkaline conditions. Organic lower alcohols participate in the dissolution of blackfoot. A large amount of organic solvents are consumed in the process, and the organic solvent tail gas produced pollutes the environment, which prolongs the process flow. In order to reduce the consumption of organic solvents and the pollution caused by organic solvents to the environment, in the preparation process of ferulic acid A solvent recovery process must be set up, increasing production costs

Method used

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  • Preparation of natural ferulaic acid
  • Preparation of natural ferulaic acid
  • Preparation of natural ferulaic acid

Examples

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Embodiment 1

[0021] Take 1000kg of the by-product commonly known as black feet produced in the production process of rice bran oil. Its ferulic acid ester content is 34.25%, which is equivalent to 10.96% of ferulic acid content. , add 230kg of 30% liquid caustic soda, 4kg of fatty acid sodium, heat with steam, pressurize 0.2Mpa, stir, when the solution temperature rises to 110°C, stop heating, continue to pressurize and stir for 4 hours, the black foot dissolves and hydrolyzes. Cool the hydrolyzate, remove insoluble impurities by a centrifuge to obtain an aqueous solution of ferulic acid, acidify the solution, and thus precipitate ferulic acid. The concentration of dilute sulfuric acid used is 10-30%, and the pH value of the aqueous solution is 1. ~4. When the temperature of the solution reaches 25-30°C, the acidification and precipitation of ferulic acid is completed, and the aqueous solution containing ferulic acid is filtered to obtain 104.5kg of crude ferulic acid, and the crude ferulic...

Embodiment 2

[0023] Repeat the operation of embodiment 1, change fatty acid sodium in embodiment 1 into fatty acid potassium, ferulic acid ester content is 33.64%, is equivalent to the content of ferulic acid and is 10.61%, the add-on of fatty acid potassium is 10kg, finally gets Ferulic acid crude product 98.7kg. Refined to obtain 86.8kg of pure product ferulic acid.

Embodiment 3

[0025] Repeat the operation of Example 1, change the fatty acid sodium in Example 1 into fatty acid lithium, the ferulic acid ester content is 34.66%, is equivalent to ferulic acid content and is 10.83%, and the add-on of fatty acid lithium is 5kg, final ferulic acid Ferulic acid crude product 104kg, refined to obtain pure product ferulic acid 83.2Kg.

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Abstract

The invention discloses a preparation method of natural ferulic acid, which comprises the steps as follows: after rice oil is expressed from rice bran, rice skin and rice germ or extracted from a solvent, the ferulic acid is extracted from a subsidiary product which is known as Blackfoot after the preparation of oryzanol in the rice oil. By the utilization of fatty acid salt as a dispersant, the crude product of the natural ferulic acid is prepared under the conditions of heating, pressurizing and stirring, and the pure product of the ferulic acid is prepared by centrifugal impurity removing, acid out and refining. The improved technology has low production costs, no lower alcohol used in the technology, the yield up to over 75 percent calculated in accordance with the content of the ferulic acid in the Blackfoot, and stable quality of products.

Description

technical field [0001] The invention relates to a preparation method of natural ferulic acid. Background technique [0002] Ferulic acid, Chinese chemical name: 3-methoxy-4-hydroxycinnamic acid, English name: Ferulic Acid, its chemical formula is: C 10 h 10 o 4 The structural formula is: [0003] [0004] Ferulic acid has increasingly wide applications in the fields of medicine, food, cosmetics, etc. The above-mentioned characteristics and other information about ferulic acid are listed in the patent application No. The extraction and purification process has been elaborated in detail. Natural plants such as Chuanxiong, Angelica, Gastrodia elata, and Jujube seed contain ferulic acid. Due to the low content of ferulic acid in natural plants, the extraction process is complicated, and the production cost is high. Its economic indicators are poor. In the known preparation or extraction and purification process of ferulic acid, black feet rich in crude fatty acids must fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C59/64C07C51/42C07C51/09
Inventor 童舜火王瑞华崔升官张锦红王小贵
Owner ZHEJIANG DELEKANG FOOD CO LTD
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