On the basis of total acid hydrolysis, methylation analysis, periodate oxidation and NMR studies (1H and 13C) the structure of the repeating unit of the polysaccharide was assigned and indicated only α-(1→4) linked Glucan.
A FACILE SYNTHESIS OF 2-BENZYLOXY/2-(4-ISOPROPYLBENZYLOXY)-2-METHYL-3-(4-SUBSTITUTED PHENYL)PROPANOIC ACID BASED INSULIN SNESITIZING AGENTS: RSR13-15 AND PKR13-15
This paper deals with the method of preparation for potassium and sodium salts of p-styrene sulfonic acid,using β-phenylethyl alcohol as the starting material to prepare β-bromoethylbenzene,which after undergoing chlorosulfonation,hydrolysis and elimination,was converted into p-styrene sulfonate. The hydrolysis and elimination were incorporated with the result of increase of yield and improvement of quality.Alternatively,gaseous sulfur trioxide was used for direct sulfonation of β-bromoethylbenzene in...
Glutamate decarboxylase from E. Coli catalyzes the decarboxytation of L-glutamate to yield γ-aminobutyric acid, the production of which will be more efficient if the enzyme reaction is conducted in immobilized cell system. It is possible now to immobilize the cell glutamate decarboxylase through entrapping the E. Coli As 1.505 whole cell into the alginate glutaric dialdehyde gel. However, the enzyme is subjected to degeneration due to the loss of a cofactor, pyridoxal phosphate (PLP) in the course of ...
Skim serum is an industrial effluent from rubber factories. It is of higher BOD and contains about 1% protein and 0.05-0.3% ammoniacal nitrogen, etc. The effluent was used to culture Geotrichum candidum as SCP(single-cell protein) feed, thus reducing environmental pollution. This paper describes the optimum technical conditions for culturing Geotrichum candidum with skim serum effluent.The experiments were carried out on a multifactorial and orthogonal design. The results showed that, among the four strains...