Showing papers in "Enzyme and Microbial Technology in 2007"

TL;DR: In all cases, enzyme engineering via immobilization techniques is perfectly compatible with other chemical or biological approaches to improve enzyme functions and the final success depend on the availability of a wide battery of immobilization protocols.

TL;DR: Microbial lipid production by the oleaginous yeast rhorosporidium toruloides y4 was studied using glucose as carbon source, in order to realize high-density cell culture and revealed that lipids from r.

TL;DR: In this paper, the authors focused on the application of batch tests to determine the maximum specific Anammox activity (SAA) of different compounds commonly present in industrial effluents.

TL;DR: In this paper, it was shown that poly(ethylene glycol) and poly(propylene glycol)-based surfactants are able to increase cellulose conversion with up to 70% in wheat straw.

TL;DR: Comparing properties of phytase from different sources are focused on, examining the effects of Phytase on P utilization and aquatic environment pollution, meanwhile providing commercial potentiality and impact factors ofphytase utilization in fish feed.

TL;DR: In this article, the effect of six different conditions of wet oxidation pretreatment on fractionation and enzymatic convertibility of sugarcane bagasse was investigated, and the results showed that pretreatment results in an increase of cellulose content of bagasse as a result of the solubilisation of hemicelluloses and lignin.

TL;DR: It is shown here for the first time that an ω-TA can be used for the amination of aromatic 2-keto-1,3-diols and an LC-ESI-MS method was developed to quantitatively detect aromatic aminodiol formation.

TL;DR: High thermostability and efficient decolorization suggest that this crude enzyme could be effectively used to decolorize the synthetic dyes from effluents.

TL;DR: Dairy wastewater was evaluated for biological hydrogen (H 2 ) production in conjugation with wastewater treatment in a suspended growth sequencing batch reactor (AnSBR) employing sequentially pretreated acids and showed rapid stabilization tendency with respect to H 2 generation and COD reduction.

TL;DR: In this article, three plant phenols, namely acetosyringone, syringaldehyde and p-coumaric acid, were selected as laccase redox mediators to investigate the enzymatic delignification of paper pulp (obtained from kraft cooking of eucalypt wood) in combination with peroxide bleaching.

TL;DR: In this paper, a steam-pretreated spruce lignocellulose and a delignified substrate were used to investigate the effect of poly(ethylene glycol) (PEG) on lignin.

TL;DR: It was proposed that that extracellular protein might be strongly involved in the aggregation of suspended flocs into granules, and also associate with the stability of the granules through affecting the surface properties of sludge.

TL;DR: This study investigates the PEG-lignin interaction as well as interactions between lignin and the enzyme modules of the Hypocrea jecorina (Trichoderma reesei) enzymes Cel7A and Cel7B and found that the dominating driving force of PEG adsorption on lign in is hydrophobic interaction.

TL;DR: In this paper, the highest fatty acid methyl esters (FAMEs) production after 12 hours at 50 °C was achieved in [Emim][TfO].

TL;DR: In this article, the significance of plant lipoxygenase for fruit and vegetables is reviewed with particular reference to the enzymes from plants, their sources, their oxidation mechanism, isozymes and inhibition of oxidation are discussed.

TL;DR: It was observed that the number of lysine residues that took part in the immobilization process was a consequence of the type of support and reaction time of the experimental conditions, and that the increasing of the thermal stability of the derivatives was correlated with a increasing number ofLysines residues involved in a multipoint covalent attachment.

TL;DR: In this paper, the effects of the media conditions (pH, temperature, biomass concentration) on the biosorption of Pb(II) ions to R. arrhizus have been investigated in a batch reactor.

TL;DR: In this article, the conversion of rice hull cellulose and hemicellulose to simple sugars was investigated using enzymatic saccharification and a dilated H2O2 pretreatment.

TL;DR: The comparative experimental results show that the heat-treatment method was better than the two others for enriching H 2 -producing inoculums from mixed anaerobic cultures.

TL;DR: In this paper, the effect on overall ethanol yield of an enzymatic prehydrolysis prior to simultaneous saccharification and fermentation (SSF) of steam pretreated corn stover was investigated.

TL;DR: In this paper, the effects of substrate concentration, pH, and cultivation time on xylanase from Penicillium oxalicum ZH-30 were optimized by statistical analysis using response surface methodology.

TL;DR: Saturated and monounsaturated C18 fatty acid gave the highest levels of sophorolipid production while fatty acids with more than one site of unsaturation gave much lower yields, and nickel contaminated stearic fatty acid residue was transformed to value added sophorlipid product.

TL;DR: In this paper, the authors used response surface methodology (RSM) involving Doehlert experimental design to evaluate the amount of citric acid produced by most important factors, such as yeast extract, raw glycerol, and salt solution concentration.

TL;DR: The deduced amino acid sequence indicates only three amino acid differences between NH1 enzyme and subtilisin Carlsberg from Bacillus licheniformis NCIMB 6816, suggesting that the preparation contains serine-protease(s).

TL;DR: In this article, a very high level of cellulase-free, thermostable xylanase has been produced from newly isolated strain of Bacillus pumilus under submerged fermentation in a basal medium supplemented with wheat bran (2, w/v) pH 8.0 and at 37°C.

TL;DR: Evaluation of eighteen strains of basidiomycetes laccase and manganese peroxidase activity in submerged fermentation of mandarin peelings and ethanol production waste showed that the expression of enzyme activity is species- and strain-dependent.

TL;DR: The nutrient supplementation strategy increased the bacterial diversity in the reactor and promoted in particular the growth of hydrogen-producing bacteria, e.g. Thermoanaerobacterium thermosaccharolyticum , as assessed by denaturing gradient gel electrophoresis.

TL;DR: It was demonstrated that lipid fractions and individual lipid classes varied in amount, relative proportions and fatty acid profile during the turnover phase.

TL;DR: All of the Y. lipolytica strains were able to produce citric acid in varying concentrations and, under the screening conditions used, the yields obtained formed a continuum from very low to among the highest reported for this substrate.

TL;DR: The results imply that temperature control and careful dosage of hydrogen peroxide would be essential in an industrial chemo-enzymatic process.