fulltext.study @t Gmail

Screening of eucalyptus wood endophytes for laccase activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
34253 45013 2016 10 PDF Available
Title
Screening of eucalyptus wood endophytes for laccase activity
Abstract

•First screening study with such amount of endophytic fungi isolated from eucalypt wood.•Laccase activity in five of them, identified and classified as ascomycetes Dothideomycetes.•Laccase production, optimization, stability and optimal pH–temperature was studied.

New lignin-degrading microorganisms and their enzymes can contribute to more efficient and environmentally sound use of lignocellulosic biomass in future biorefineries. In view of this, 127 endophytic fungi were isolated from eucalyptus trees. Strains were tested for their ability to produce ligninolytic enzymes in agar-plate medium containing ABTS, and 21 showed positive ABTS-oxidation. Positive strains in liquid medium confirmed that five produced laccase but no peroxidase activity. These strains were identified as Hormonema sp. and Pringsheimia smilacis, of the family Dothioraceae, Ulocladium sp. (Pleosporaceae) and Neofusicoccum luteum and Neofusicoccum australe (Botryosphaeriaceae). Laccase production by fungi of the family Dothioraceae is described here for the first time.To increase laccase production from these fungi, copper sulphate and ethanol were assayed as inducers. An increase in laccase activity of 85% was found for Hormonema sp. and N. luteum and 95% for N. australe. No increase was obtained for P. smilacis. A maximum temperature of 40 °C is recommended for possible biotechnological applications with these four strains at pH 2 for N. luteum and N. australe, pH 4 for Hormonema sp. and pH 4–5 for P. smilacis.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Endophytic fungi; Eucalyptus wood; Laccases; Ligninolytic enzymes; Screening
First Page Preview
Screening of eucalyptus wood endophytes for laccase activity
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 51, Issue 5, May 2016, Pages 589–598
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us