Advertisement

Topics

Direct conversion of cellulose into ethanol and ethyl-β-d-glucoside via engineered Saccharomyces cerevisiae.

08:00 EDT 16th July 2018 | BioPortfolio

Summary of "Direct conversion of cellulose into ethanol and ethyl-β-d-glucoside via engineered Saccharomyces cerevisiae."

Simultaneous saccharification and fermentation (SSF) of cellulose via engineered Saccharomyces cerevisiae is a sustainable solution to valorize cellulose into fuels and chemicals. In this study, we demonstrate the feasibility of direct conversion of cellulose into ethanol and a bio-degradable surfactant, ethyl-β-d-glucoside, via an engineered yeast strain (i.e., strain EJ2) expressing heterologous cellodextrin transporter (CDT-1) and intracellular β-glucosidase (GH1-1) originating from Neurospora crassa. We identified the formation of ethyl-β-d-glucoside in SSF of cellulose by the EJ2 strain owing to transglycosylation activity of GH1-1. The EJ2 strain coproduced 0.34 ± 0.03 g ethanol/g cellulose and 0.06 ± 0.00 g ethyl-β-d-glucoside/g cellulose at a rate of 0.30 ± 0.02 g/L/h and 0.09 ± 01 g/L/h, respectively, during the SSF of Avicel PH-101 cellulose, supplemented only with Celluclast 1.5L. Herein, we report a possible co-production of a value-added chemical (alkyl-glucosides) during SSF of cellulose exploiting the transglycosylation activity of GH1-1 in engineered S. cerevisiae. This co-production could have a substantial effect on overall techno-economic feasibility of SSF of cellulose. This article is protected by copyright. All rights reserved.

Affiliation

Journal Details

This article was published in the following journal.

Name: Biotechnology and bioengineering
ISSN: 1097-0290
Pages:

Links

DeepDyve research library

PubMed Articles [8557 Associated PubMed Articles listed on BioPortfolio]

Production of Ethyl Esters by Direct Transesterification of Microalga Biomass Using Propane as Pressurized Fluid.

This work aimed to produce ethyl esters from Chlorella vulgaris microalgae biomass, using an immobilized enzymatic catalyst associated with pressurized fluid (propane) by direct transesterification. I...

Effect of anti-solvents on the characteristics of regenerated cellulose from 1-ethyl-3-methylimidazolium acetate ionic liquid.

This work investigates the effect of different anti-solvents (water, ethanol, or both water and ethanol) on the characteristics of cellulose dissolved and then generated from 1-ethyl-3-methylimidazoli...

Bioethanol production from wheat straw by phosphoric acid plus hydrogen peroxide (PHP) pretreatment via simultaneous saccharification and fermentation (SSF) at high solid loadings.

Phosphoric acid plus hydrogen peroxide (PHP) pretreatment was employed on wheat straw for ethanol conversion by simultaneous saccharification and fermentation (SSF) at high loadings. Results showed so...

Mechanistic insights into the iridium catalysed hydrogenation of ethyl acetate to ethanol: a DFT study.

Density functional theory study of the hydrogenation of ethyl acetate catalysed by iridium complexes [Cp*Ir(bpy)OH2]2+ reveals a direct C-O bond cleavage mechanism with two cascade catalytic cycles fo...

The influence of caffeine on ethyl glucuronide levels in rat serum and in rat hair.

Ethanol and caffeine are the most widely used psychoactive substances in the world, with an observed steady increase in the combined consumption of alcohol and caffeine. Specific signs of ethanol-caff...

Clinical Trials [2153 Associated Clinical Trials listed on BioPortfolio]

Randomized Diagnostic Trial Comparing Ethylglucuronide and Ethanol

Background: Alcohol use disorders represent a major health burden. Efforts aiming at reducing alcohol-related harm include early detection of those with risky drinking habits as well detec...

The Effects of Ethanol on Intestinal Permeability and Gut Hormones

The aime of this study is to envsitigate if ethanol has an incretin effect. This is done by administration of ethanol orally vs. an isoethanolaemic i.v. infusion of ethanol.

Systemic and Local Diffusion of Ethanol After Administration of Ethanol 96% Formulated in a Gel and Ethanol 98% Solution by the Percutaneous Route, in Patients With Congenital Venous Malformations:Pharmacokinetic, Pharmacodynamic and Clinical Study.

Absolute ethanol has been used "off-label" as an unmodified formulation (solution) in CVM. Despite its effectiveness, absolute ethanol appears difficult to handle because of its high diffu...

Mouthwash With Chlorhexidine 0.12%/Ethyl Alcohol 7% Compared to Ethyl Alcohol 7%

Clinical triple-blind randomized controlled trial to assess the use of two different mouthwashes to reduce the oral colonization by gramnegative bacteria in patients with chemotherapy indu...

Substrate Metabolism During Exercise Following Ingestion of Ethanol

This study will investigate how ethanol (pure alcohol) influences carbohydrate and fat metabolism during prolonged, moderate intensity exercise. Participants will perform two bouts of cycl...

Medical and Biotech [MESH] Definitions

A species of gram-positive, thermophilic, cellulolytic bacteria in the family Clostridaceae. It degrades and ferments CELLOBIOSE and CELLULOSE to ETHANOL in the CELLULOSOME.

A type of ion exchange chromatography using diethylaminoethyl cellulose (DEAE-CELLULOSE) as a positively charged resin. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

A gas that condenses under slight pressure. Because of its low boiling point ethyl chloride sprayed on skin produces an intense cold by evaporation. Cold blocks nerve conduction. Ethyl chloride has been used in surgery but is primarily used to relieve local pain in sports medicine.

Cellulose derivative used in chromatography, as ion-exchange material, and for various industrial applications.

Organic compounds having ethyl groups bound to an oxygen atom

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article