Effects of different solid state fermentation substrate on biochemical properties of cutinase from Fusarium sp.
摘要:
The present results demonstrate that the catalytic characteristics of cutinase produced by the same strain differ depending on the culture medium used. This conclusion was possible after the study of biochemical characterization and enantioselective properties of cutinases produced by Fusarium oxysporum in four different culture mediums. The mediums were composed of wheat bran, soybean rind, rice bran and Jatropha curcas seed cake, different Brazilian agricultural by-products. The largest difference can be observed on cutinase produced by J. curcas seed cake. This enzyme has been activated in most metal ions tested and exhibited excellent stability in organic solvent, especially hexane. The cutinase produced in rice bran showed greatest activity in the presence of p-nitrophenyl butyrate as a substrate, whereas the other enzymes showed greatest activity in the presence of p-nitrophenyl caprilate. Regarding enantioselective properties the cutinase produced in soybean rind showed the best result compared to enzymes produced in wheat bran. (C) 2011 Elsevier By. All rights reserved.
A method for producing an optically active 2-alkanol
申请人:CHISSO CORPORATION
公开号:EP0908522A1
公开(公告)日:1999-04-14
Both enantiomers of optically active 2-alkanol are produced by transesterification reaction of racemic 2-alkanol and aliphatic acid 2,2,2-trichloroethylesler in the presence of enzyme derived from Candida antarctica.
Both enantiomers of optically active 2-alkanol, which are useful as starting materials of liquid crystal materials and have optical purity of 99% or more, can be efficiently produced.
In order to obtain both enantiomers of aliphatic secondary alcohols via a greener method, the four-step resolution-separation process involving lipase-catalyzed enantioselective esterification and hydrolysis as well as two separation procedures both via heterogeneous azeotropic distillation was developed. (S)-2-Pentanol (ee = 98.6%), (R)-2-pentanol (ee >99%), (S)-2-octanol (ee = 98.2%), and (R)-2-octanol (ee = 98.5%) were all produced in high purity (>98%) and high yield (>90%). In addition to the two model substrates, this method could also be applied to the resolution of other aliphatic secondary alcohols. (C) 2013 Elsevier Ltd. All rights reserved.
MOSANDL, ARMIN;DEGER, WOLFGANG, Z. LEBENSM.-UNTERSUCH. UND FORSCH., 185,(1987) N 5, 379-382
作者:MOSANDL, ARMIN、DEGER, WOLFGANG
DOI:——
日期:——
US5973214A
申请人:——
公开号:US5973214A
公开(公告)日:1999-10-26
Effects of different solid state fermentation substrate on biochemical properties of cutinase from Fusarium sp.
作者:Paula Speranza、Patrícia de Oliveira Carvalho、Gabriela Alves Macedo
DOI:10.1016/j.molcatb.2011.06.003
日期:2011.11
The present results demonstrate that the catalytic characteristics of cutinase produced by the same strain differ depending on the culture medium used. This conclusion was possible after the study of biochemical characterization and enantioselective properties of cutinases produced by Fusarium oxysporum in four different culture mediums. The mediums were composed of wheat bran, soybean rind, rice bran and Jatropha curcas seed cake, different Brazilian agricultural by-products. The largest difference can be observed on cutinase produced by J. curcas seed cake. This enzyme has been activated in most metal ions tested and exhibited excellent stability in organic solvent, especially hexane. The cutinase produced in rice bran showed greatest activity in the presence of p-nitrophenyl butyrate as a substrate, whereas the other enzymes showed greatest activity in the presence of p-nitrophenyl caprilate. Regarding enantioselective properties the cutinase produced in soybean rind showed the best result compared to enzymes produced in wheat bran. (C) 2011 Elsevier By. All rights reserved.