Abstract:
The present statement provides a step of proceeding tyrosinase in lignin and making the mixture react, as a method for degrading a catalyst with lignin. When using the method, tyrosinase dose not need an alternate group, lignin is effectively degraded due to stability and activity, in a more eco-friendly way then heat or oxidation treatment, and lignin is also effectively degraded from ligro-cellulosic biomass, leading to easy production of bio fuel.
Abstract:
PURPOSE: A method for preparing butanone from levulinic acid using a decarboxylase biocatalyst is provided to produce butanone which is a biofuel for various applications by enzymatic decarboxylation of levulinic acid under the presence of a biocatalyst. CONSTITUTION: A method for preparing butanone comprises the step of performing decarboxylization of levulinic acid under the presence of an acetoacetate decarboxylase (AADC) biocatalyst, an AADC expressing microorganism, or a mixture thereof and an electron transport mediator. The electron transport mediator is methyl viologen, 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), or a mixture thereof. The AACD biocatalyst is prepared from Clostridium sp., Psudomonas sp., Chromobacterium sp., or Paenibacillus sp. [Reference numerals] (AA) Relative activity(%); (BB) Concentration of a substrate(mM)
Abstract:
Tetra-butylammonium laurylsulfate of formula (I) is new. Also claimed is the prepn. of the cpd. (I) which comprises reacting a salt of laurylsulfate of formula (II) with butylammonium halide of formula (III) in an aqua. soln. In the formulas, M=Ra, Na or K; X=Cl, Br, F or I. Pref. the molar ratio of the cpd. (II) to the cpd. (III) is 1:1. TBALS is useful as an electrolyte in the polymerization of 5-membered ring cpds. i.e. pyrrole or liophene.