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Hydrolysate

About: Hydrolysate is a research topic. Over the lifetime, 12795 publications have been published within this topic receiving 260454 citations. The topic is also known as: protein hydrolysate.


Papers
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Journal ArticleDOI
TL;DR: The inhibitory effect on ethanol production by yeast and bacteria is presented and the inhibition of volumetric ethanol productivity was found to depend on the amount of methoxyl substituents and hence hydrophobicity (log P).
Abstract: An overview of the different inhibitors formed by pre-treatment of lignocellulosic materials and their inhibition of ethanol production in yeast and bacteria is given. Different high temperature physical pre-treatment methods are available to render the carbohydrates in lignocellulose accessible for ethanol fermentation. The resulting hydrolyzsates contain substances inhibitory to fermentation—depending on both the raw material (biomass) and the pre-treatment applied. An overview of the inhibitory effect on ethanol production by yeast and bacteria is presented. Apart from furans formed by sugar degradation, phenol monomers from lignin degradation are important co-factors in hydrolysate inhibition, and inhibitory effects of these aromatic compounds on different ethanol producing microorganisms is reviewed. The furans and phenols generally inhibited growth and ethanol production rate (QEtOH) but not the ethanol yields (YEtOH) in Saccharomyces cerevisiae. Within the same phenol functional group (aldehyde, ketone, and acid) the inhibition of volumetric ethanol productivity was found to depend on the amount of methoxyl substituents and hence hydrophobicity (log P). Many pentose-utilizing strains Escherichia coli, Pichia stipititis, and Zymomonas mobilis produce ethanol in concentrated hemicellulose liquors but detoxification by overliming is needed. Thermoanaerobacter mathranii A3M3 can grow on pentoses and produce ethanol in hydrolysate without any need for detoxification.

1,427 citations

Journal ArticleDOI
TL;DR: The values of tryptophan obtained were close to the expected integral values and the recoveries of all other amino acids were comparable to those observed after hydrolysis with 6 n HCl.

993 citations

Journal ArticleDOI
TL;DR: A highly reactive amine derivatizing reagent, 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate, has been synthesized in a rapid, one-step procedure to form stable unsymmetric urea derivatives which are readily amenable to analysis by reversed phase HPLC.

918 citations

Journal ArticleDOI
TL;DR: An analytical procedure which affords the precise amino acid composition of a protein or a peptide from a single hydrolysate is described and the values of all amino acids, including tryptophan and half-cystine, were close to the expected theoretical values for the proteins examined.

915 citations

Journal ArticleDOI
TL;DR: In this article, the levels and compositions of free amino acids and small peptides during hydrolysis of mackerel hydrolysates were investigated to find out their relationships with antioxidant activities.

912 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023774
20221,620
2021692
2020753
2019759
2018744