Results 41 to 50 of about 25,231 (183)

Identification of a xylose reductase gene in the xylose metabolic pathway of Kluyveromyces marxianus NBRC1777

Journal of Industrial Microbiology & Biotechnology, 2011
Kluyveromyces marxianus is thermotolerant yeast that is able to utilize a wider range of substrates and has greater thermal tolerance than most other yeast species. K. marxianus can assimilate xylose, but its ability to produce ethanol from xylose in oxygen-limited environments is poor. In the present study, the K.
Xiaolian Gao, Xiaolian Gao, Jiong Hong, Dongmei Wang, Ling Zhang, Biao Zhang   +5 more
openaire   +3 more sources

Integrating enzyme production and bioenergy recovery through circular bioprocessing of carbohydrate‐rich food wastes into α‐amylase, hydrogen and methane

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study explored the valorization of two carbohydrate rich food wastes, a sugary (spoiled dates, SD) and a starchy (wasted rice, WR) one, for the biotechnological production of α‐amylase, biohydrogen (bioH2), and methane (CH4). Initially, the bioH2 and CH4 production potentials of raw SD and WR were assessed without any pretreatment, via ...
Mohamed Hashem, Ioanna Ntaikou
wiley   +1 more source

DPPH‐based Antioxidant Screening and Cellulase‐assisted Hydrodistillation of Matourea azurea: Improved Essential Oil Yield and Density Functional Theory Insights Into a Rare Terpene

Chemistry &Biodiversity, EarlyView.
ABSTRACT Essential oils are rich in bioactive molecules like terpenes and phenolic compounds, but have low yields, making process efficiency crucial. Enzyme‐assisted hydrodistillation is a sustainable alternative, enhancing oil release by degrading the cell wall.
Júlio César Gonçalves de Souza, Leiliane do Socorro Sodré de Souza, Ari de Freitas Hidalgo, Guilherme Teixeira de Azevedo, Giovana Lima de Souza, Caroline Dutra Lacerda, Sergio Duvoisin Junior, Anderson Mathias Pereira   +7 more
wiley   +1 more source

ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]

, 1987
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W., Fischer, R., Huber, R., Rüdiger, W., Scheer, Hugo, Schirmer, T., Schmidt, G., Siebzehnrübl, S.   +7 more
core   +1 more source

Metabolic engineering of a xylose-isomerase-expressing strain for rapid anaerobic xylose fermentation [PDF]

FEMS Yeast Research, 2005
After an extensive selection procedure, Saccharomyces cerevisiae strains that express the xylose isomerase gene from the fungus Piromyces sp. E2 can grow anaerobically on xylose with a mu(max) of 0.03 h(-1). In order to investigate whether reactions downstream of the isomerase control the rate of xylose consumption, we overexpressed structural genes ...
Maurice J. Toirkens, Jack T. Pronk, Johannes P. van Dijken, Marko Kuyper, Miranda M.P. Hartog, Aaron Adriaan Winkler, Marinka J. H. Almering   +6 more
openaire   +3 more sources

d-xylose accelerated death of pentose metabolizing Saccharomyces cerevisiae

Biotechnology for Biofuels and Bioproducts, 2022
AbstractRapid and effective consumption of d-xylose by Saccharomyces cerevisiae is essential for cost-efficient cellulosic bioethanol production. Hence, heterologous d-xylose metabolic pathways have been introduced into S. cerevisiae. An effective solution is based on a xylose isomerase in combination with the overexpression of the xylulose kinase ...
Nijland, Jeroen G, Zhang, Xiaohuan, Driessen, Arnold J M   +2 more
openaire   +4 more sources

Rieske Oxygenase‐Catalyzed Biotransformations in Recombinant Cupriavidus necator Fueled by Formate Oxidation

ChemBioChem, EarlyView.
In this study, formatotrophic biotransformations in recombinant Cupriavidus necator catalyzed by Rieske oxygenases (ROs) toward various oxyfunctionalized olefins are demonstrated. The oxidation of formate regenerates NADH, the ROs’ cofactor, essentially fueling the reaction.
Marleen Hallamaa, Hannah Pia Franziska Meier, Matteo Vajente, Mattia Ghirardi, Jan Deska, Sandy Schmidt   +5 more
wiley   +1 more source

Integrated and closed‐loop biorefinery strategies for efficient waste valorization and biofuel production

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Advancements in biofuel production technologies are essential for reducing global dependence on fossil fuels and addressing their overexploitation. Many valuable components of biomass, such as cellulose, hemicellulose, and lignin, remain underused in traditional biorefineries, which typically rely on a single feedstock to produce a primary ...
Marcos Paulo Patta Granado, Prakhar Talwar, Sahil Sahil, Andrea Cressoni De Conti, Sonil Nanda, Janusz A. Kozinski   +5 more
wiley   +1 more source

Efficient cloning system for construction of gene silencing vectors in Aspergillus niger [PDF]

, 2008
An approach based on Gateway recombination technology to efficiently construct silencing vectors was developed for use in the biotechnologically important fungus Aspergillus niger. The transcription activator of xylanolytic and cellulolytic genes XlnR of
Graaff, L.H., de, Oliveira, J.M., Qin Ling, Veen, D., van der   +3 more
core   +2 more sources

Biotransformation of Phenolics in Spent Liquor from Aqueous Ammonia Pretreatment

ChemSusChem, EarlyView.
Aqueous ammonia pretreatment of poplar releases p‐hydroxybenzamide (pHBAm) and p‐hydroxybenzoic acid (pHBA) into the spent liquor and converts some of the pHBA to phenol. An engineered strain of N. aromaticivorans transforms pHBAm and pHBA into the bioplastic precurso 2‐pyrone‐4,6‐dicarboxylic acid.
Shengfei Zhou, Maximiliano García‐Mancilla, Jordi Francis Clar, Troy M. Runge, Timothy J. Donohue, Daniel R. Noguera, Steven D. Karlen   +6 more
wiley   +1 more source