期刊
BIORESOURCE TECHNOLOGY
卷 289, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121614
关键词
Potato peels waste; Enzymatic saccharification; Pretreatment; Bioethanol; W. anomalus
资金
- project Research infrastructure for Waste Valorization and Sustainable Management of Resources, INVALOR [MIS 5002495]
- Operational Programme Competitiveness, Entrepreneurship and Innovation (NSRF 2014-2020)
- Greece and the European Union (European Regional Development Fund)
- Stavros Niarchos Foundation within the framework of the project ARCHERS (Advancing Young Researchers' Human Capital in Cutting Edge Technologies in the Preservation of Cultural Heritage and the Tackling of Societal Challenges)
The present study focuses on the exploration of the potential use of potato peels waste (PPW) as feedstock for bioethanol production, using a newly isolated yeast strain, Wickerhamomyces anomalus, via different saccharification and fermentation schemes. The saccharification of PPW was performed via thermal and chemical (acid, alkali) pretreatment, as well as via enzymatic hydrolysis through the use of commercial enzymes (cellulase and amylase) or enzymes produced at lab scale (alpha-amylase from Bacillus sp. Gb67), either separately or in mixtures. The results indicated that the enzymatic treatment by commercial enzymes led to a higher saccharification efficiency (72.38%) and ethanol yield (0.49 g/g(consumed sugars)) corresponding to 96% of the maximum theoretical. In addition, acid pretreatment was found to be beneficial for the process, leading also to high hydrolysis and ethanol yields, indicating that PPW is a very promising feedstock for bio-ethanol production by W. anomalus under different process schemes.
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