fulltext.study @t Gmail

Dye-decolorizing activity in isolated yeasts from the ecoregion of Las Yungas (Tucumán, Argentina)

Paper ID Volume ID Publish Year Pages File Format Full-Text
18239 42715 2007 9 PDF Available
Title
Dye-decolorizing activity in isolated yeasts from the ecoregion of Las Yungas (Tucumán, Argentina)
Abstract

Sixty-three yeast isolates obtained from samples of Laurel del monte (Phoebe porphyria) and underlying soils from Las Yungas forests (Tucumán, Argentina) were compared on their ability for textile dye decolorization. Seventeen isolates showed the highest decolorization ability on agar plates containing Vilmafix® Yellow 4R-HE, Vilmafix® Red 7B-HE (Vi–R), Vilmafix® Blue RR-BB (Vi–B) and Vilmafix® Green RR-4B, either alone or as a mixture. Screening in liquid media supplemented with dyes led to the five outstanding isolates: 2023, 2184, 2030, 2118 and 2014 showing dye removal values as high as 87.9–98.7% for Vi–B and 89.8–94.5% for Vi–R after 72 h of cultivation under aerobic conditions. Highest specific (3.06 and 2.43 mg g−1 h−1 for Vi–B and Vi–R, respectively) and volumetric (5.39 and 4.14 mg l−1 h−1 for Vi–B and Vi–R, respectively) decolorization rates were achieved with isolate 2023. Almost colorless biomass recovered after decolorization, supernatant UV–vis spectra and the presence of extracellular oxidative factors suggested that biodegradation mechanisms may be involved in decolorization. Selected isolates were identified according to classical and molecular procedures and were clumped into group 2118-2014 corresponding to Trichosporon multisporum (100% similarity) and group 2023-2184-2030, closely related to T. laibachii (98.9% similarity).

Keywords
Textile dyes; Biodecolorization; Wild yeasts; Trichosporon
First Page Preview
Dye-decolorizing activity in isolated yeasts from the ecoregion of Las Yungas (Tucumán, Argentina)
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: Enzyme and Microbial Technology - Volume 40, Issue 6, 2 May 2007, Pages 1503–1511
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