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Enhanced ethanol production from wheat straw by integrated storage and pre-treatment (ISP)

Paper ID Volume ID Publish Year Pages File Format Full-Text
17082 42639 2013 6 PDF Available
Title
Enhanced ethanol production from wheat straw by integrated storage and pre-treatment (ISP)
Abstract

Integrated storage and pre-treatment (ISP) combines biopreservation of moist material under airtight conditions and pre-treatment. Moist wheat straw was inoculated with the biocontrol yeast Wickerhamomyces anomalus, the xylan degrading yeast Scheffersomyces stipitis or a co-culture of both. The samples and non-inoculated controls were stored at 4 or 15 °C. The non-inoculated controls were heavily contaminated with moulds, in contrast to the samples inoculated with W. anomalus or S. stipitis. These two yeasts were able to grow on wheat straw as sole source of nutrients. When ethanol was produced from moist wheat straw stored for four weeks at 4 °C with S. stipitis, an up to 40% enhanced yield (final yield 0.15 g ethanol per g straw dry weight) was obtained compared to a dry sample (0.107 g/g). In all other moist samples, stored for four weeks at 4 °C or 15 °C, 6–35% higher yields were obtained. Thus, energy efficient bio-preservation can improve the pre-treatment efficiency for lignocellulose biomass, which is a critical bottleneck in its conversion to biofuels.

► Up to 40% higher ethanol yields from moist wheat straw than from dry material. ► Biopreservation acted as pre-treatment (integrated storage and pre-treatment – ISP). ► Scheffersomyces stipitis and Wickerhamomyces anomalus were promising for ISP. ► Anti-mould activity of Scheffersomyces stipitis was observed for the first time.

Keywords
Wheat straw; Bio-preservation; Pre-treatment; Ethanol
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Enhanced ethanol production from wheat straw by integrated storage and pre-treatment (ISP)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 52, Issue 2, 5 February 2013, Pages 105–110
Authors
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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