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Spectrophotometric Method for Determination of Tryptophan in Protein Hydrolysates
protein hydrolysates tryptophan spectrophotometry diphenylamine
2009/2/26
A novel spectrophotometric method for determination of tryptophan content in protein hydrolysates has been developed. The reagent used is diphenylamine sulphonate which is oxidised to diphenylbenzidin...
Nonproteic Contents Interfere with the Analysis of Added Tryptophan in Feeds � Test of a Correction Model
Free nonproteic Tryptophan amino acid analysis supplementation
2009/1/14
The nonproteic, free tryptophan contents in 23 important feed ingredients were analysed. Wheat, its bran and middlings, soybean meal, sunflower meal and other vegetable feed ingredients contain signif...
Site-Directed Mutagenesis of Tryptophan 622 of Thermoactinomyces vulgaris R-47 Glucoamylase:pH Optima and Activities of Five Mutants
glucoamylase optimal pH catalytic base
2008/4/20
In Aspergillus awamori glucoamylase, the optimal pH has been reported to increase to maintain activity by a mutation of Ser411 which forms a hydrogen-bond with a catalytic base (Fang and Ford, Protein...
Tryptophan Catabolism by Lactobacillus caseiand Lactobacillus helveticus Cheese Flavor Adjuncts
Lactobacillus amino acid catabolism tryptophan cheese flavor
2008/3/31
Microbial degradation of Trp is thought to promote the formation of aromatic compounds that impart putrid, fecal, or unclean flavors in cheese, but pathways for their production have not been establis...