Specific Enzyme-Catalyzed Hydrolysis and Synthesis in Aqueous and Organic Medium Using Biocatalysts with Lipase Activity from Aspergillus niger MYA 135
作者:Cintia M. Romero、Licia M. Pera、Flavia Loto、Mario D. Baigori
DOI:10.1007/s10562-012-0901-6
日期:2012.11
aqueous medium (RO/A < 1). Transesterifications of different alcohols with various p-nitrophenylderivatives using all three biocatalysts preparations were also evaluated in n-hexane. For methanolysis and ethanolysis, the constitutive mycelium-bound lipase displayed an interesting preference for C16 substrate (p-nitrophenyl palmitate). The induced mycelium-bound lipase showed high specific transesterification
Abstract A variety of methyl esters are converted into the corresponding propyl esters upon treatment with l-propanol and chlorotrimethylsilane. Among them acyclic aliphatic esters have the best conversion rate.
摘要 多种甲基酯经1-丙醇和三甲基氯硅烷处理后可转化为相应的丙酯。其中无环脂肪族酯的转化率最好。
IMIDAZOLIUM ALKYL (METH)ACRYLATE POLYMERS
申请人:Garcia Castro Ivette
公开号:US20090060859A1
公开(公告)日:2009-03-05
The present invention relates to the use of imidazolium alkyl(meth)acrylate homo- and copolymers in cosmetic preparations and to the corresponding cosmetic preparations.
本发明涉及在化妆品制剂中使用咪唑烷基(甲基)丙烯酸酯同聚物和共聚物,以及相应的化妆品制剂。
Electrogenerated Acid as an Efficient Catalyst for the Protection and Deprotection of Alcohols with Dihydropyran and Transesterification of Glyceride
作者:Sigeru Torii、Tsutomu Inokuchi、Kazumi Kondo、Hiroshi Ito
DOI:10.1246/bcsj.58.1347
日期:1985.4
Protection of alcohols with 3,4-dihydro-2H-pyran and hydrolysis of the resulting tetrahydropyranyl ethers are cleanly performed by using an electrogenerated acid (EG acid) as a catalyst. Transesterification of glyceride was also achieved with EG acid.
Process for producing fatty acid alkyl ester composition
申请人:Saka Shiro
公开号:US20060025620A1
公开(公告)日:2006-02-02
An object of the present invention is to solve a problem of separation and recovery of catalysts present in an alkali metal catalytic method currently often used, a problem of excess consumption of a catalyst by a free fatty acid in a raw material, and other problems, and to solve a problem of the presence of a large excess amount of alcohol in a conventional supercritical methanol method, and to provide a method for producing a fatty acid alkyl ester composition in a reaction system containing water and free fatty acid present. The present invention has attained the above-mentioned object by provided a method for producing a fatty acid alkyl ester composition using fats and oils containing a fatty acid glyceride and/or fatty acid, wherein alcohol and/or water is allowed to co-exist with the above-mentioned fats and oils and the reaction is conducted under conditions of a temperature of 100° C. to 370° C. and a pressure of 1 to 100 MPa.