Title:
METHOD FOR PREPARING NATURAL FERULIC ACID BY USING ORYZANOL-CONTAINING SAPONIN AS RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/129233
Kind Code:
A1
Abstract:
A method for preparing a natural ferulic acid by using oryzanol-containing saponin as a raw material, comprising the following steps to prepare a natural ferulic acid: hot-dissolving with alkali and alcohol and filtering, acid precipitation and separation, decolorizing with an organic solvent at normal temperature, hot reflux hydrolysis with alkali and alcohol, cold precipitation and separation, acidifying and cold standing desalination, refining with an ultrafiltration membrane, decolorizing with aluminum oxide, recovering the solvent, solid-liquid separation, drying and the like. In the present invention, the content of oryzanol in the raw material is first increased to 50-70%, and then the oryzanol is subjected to hot-dissolution, reflux and hydrolysis by using an alkali and alcohol solvent, and a pure white natural ferulic acid having a purity of 99% or more is obtained by means of synergistic effects of oryzanol purification and decoloration before hydrolysis and ferulic acid alcohol solution refining and decoloration after hydrolysis. The process of the present invention has the significant advantages of high yield, high purity and complete decolorization; compared with high-temperature concentrated alkali hydrolysis, the reaction is mild, the alkali concentration is low, the amount of alkali is small, and the conversion is complete; the production process is simple and low in cost; and the product meets the international requirements of natural vanillin on the natural degree of the raw material, creating obvious economic and social benefits.
Inventors:
LIU GENGGUI (CN)
HUANG HUAXUE (CN)
ZENG RUNQING (CN)
HE ANLE (CN)
HUANG HUAXUE (CN)
ZENG RUNQING (CN)
HE ANLE (CN)
Application Number:
PCT/CN2020/129333
Publication Date:
July 01, 2021
Filing Date:
November 17, 2020
Export Citation:
Assignee:
HUNAN HUACHENG BIOTECH INC (CN)
International Classes:
C07C27/02; C07C51/09; C07C51/42; C07C51/43; C07C51/47; C07C59/64
Foreign References:
| CN111072449A | 2020-04-28 | |||
| CN104628553A | 2015-05-20 | |||
| CN1064674A | 1992-09-23 |
Other References:
HUANG XIANCI: "Method for Extracting Fatty Acid Methyl Ester, Glycerol, Oryzanol and Unsaponifiable Matter from Rice Bran Oil Soapstock", HUBEI CHEMICAL INDUSTRY, no. 2, 1 January 1989 (1989-01-01), pages 33 - 36, XP055824743
Attorney, Agent or Firm:
BEIJING ZHONGZHI XINGYUAN IP LAW FIRM (CN)
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