Bioconversion of Cellulo-Starch Waste from Cassava Starch Industries for Ethanol Production: Pretreatment Techniques and Improved Enzyme Systems

Autor:	M.P. Divya Nair, M.S. Sajeev, J.T. Sheriff, G. Padmaja
Rok vydání:	2012
Předmět:	Enzyme complex biology Bioconversion Starch food and beverages Cellulase chemistry.chemical_compound Biochemistry chemistry biology.protein Hemicellulose Ethanol fuel Amylase Food science Cellulose Biotechnology
Zdroj:	Industrial Biotechnology. 8:300-308
ISSN:	1931-8421 1550-9087
Popis:	Cassava starch factory residue (CSFR) is a cellulo-starch byproduct of the starch industries in India that contains approximately 56–60% unextracted starch. The potential of this low-cost biowaste as a raw material for ethanol production was investigated using a combination of pretreatment techniques and improved enzyme systems. Hydrothermal pretreatment for 30 min significantly enhanced the biodegradation of CSFR and the possible loosening of the cellulose/hemicellulose matrix, evidenced through ultrastructural studies. Binary enzyme action using Accellerase™ 1000 (cellulolytic enzyme complex) and Stargen™ 001 (granular starch-hydrolyzing enzyme) was advantageous due to ethanol yield obtained with a shorter processing time (72 h). Non-ionic surfactant such as Tween 20® significantly enhanced the ethanol yield by possible scavenging of lignin, preventing nonproductive binding to cellulase. Scanning electron microscopic studies on pretreated CSFR and the residue left after the saccharification/fer...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa350a272400b60f38eb586ac2dda136 https://doi.org/10.1089/ind.2012.0007 Zobrazit plný text záznamu