Enzymatic hydrolysis

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  • The enzymatic hydrolysis of cellulose encounters various limitations that are both substrate- and enzyme-related. Although the crystallinity of pure cellulosic Avicel plays a major role in determining the rate of hydrolysis by cellulases from Trichoderma reesei, we show that it stays constant during enzymatic conversion. The mode of action of cellulases was investigated by studying their kinetics on cellulose samples.

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  • Susceptibility of annealed starches to hydrolysisbya-amylase and glucoamylase has many contents: preparation of annealed starch, enzymatic hydrolysis of starch granules, apparent amylose content, starch morphology, thermal properties, x-ray diffraction, enzymatic hydrolysis of starch granules,...

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  • The purpose of this work was to study protein and lipid recovery from yellowfin tuna head by enzymatic hydrolysis as well as to analyse the amino acid compositions in tuna head protein hydrolysate and the fatty acid compositions in tuna head oil.

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  • Problem statement: Dilute sulphuric acid and enzymatic hydrolysis methods were used for sugar extraction. Xylose and glucose sugars were obtained from corn cobs. Approach: Acid hydrolysis of corn cobs gave higher amount of sugars than enzymatic hydrolysis. Results: The results showed that optimal temperature and time for sugar fermentation were approximately 25°C and 50 h by two yeast strains (S. cerevisiae and P. Stipitis) respectively.

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  • 9 Bioethanol from Lignocellulosic Biomass Part I Pretreatment of the Substrates Ryali Seeta Laxman and Anil H. Lachke contents Abstract.................................................................................................................. 122 9.1 Introduction .................................................................................................. 122 9.2 Enzymatic Hydrolysis of Lignocellulosic Materials: The Barriers.............. 123 9.3 Types of Pretreatment .................................................................................. 124 9.3.

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  • 11 Bioethanol from Lignocellulosic Biomass Part III Hydrolysis and Fermentation Ramakrishnan Anish and Mala Rao contents Abstract.................................................................................................................. 159 11.1 Introduction .................................................................................................. 160 11.2 Hydrolysis of Lignocellulosic Biomass ........................................................ 160 11.2.1 Acid Hydrolysis ............................................................................... 160 11.2.1.

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  • An exo-1,3-b-glucanase has been isolated from cultural filtrate of Trichoderma viride AZ36. The N-terminal sequence of the purified enzyme (m ¼ 61 ^ 1 kDa) showed no significant homology to other known glucanases. The 1,3-b-glucanase displayed high activity against laminarins, curdlan, and 1,3-b-oligoglucosides, but acted slowly on 1,3-1,4-b-oligoglucosides. No significant activity was detected against high molecular mass 1,3-1,4-bglucans. The enzyme carried out hydrolysis with inversion of the anomeric configuration.

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  • The enzymatic properties of chitinase A fromVibrio carchariaehave been studied in detail by using combined HPLC and electrospray MS. This approach allowed the separation ofaandbanomers and the simultaneous monitoring of chitooligosaccharide products down to picomole levels. Chi-tinase A primarily generated b-anomeric products, indicating that it cata-lyzed hydrolysis through a retaining mechanism.

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  • The carbohydrate moieties of glycosphingolipids from eggs of the human parasite,Schistosoma mansoni,wereenzy-matically released, labelled with 2-aminopyridine (PA), fractionated and analysed by linkage analysis, partial hydrolysis, enzymatic cleavage, matrix-assisted laser desorption/ionization time-of-¯ight mass spectrometry and nano-electrospray ionization mass spectrometry.

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