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ENHANCED PRODUCTION OF ETHANOL FROM FREE AND IMMOBILIZED SACCHAROMYCES CEREVISIAE UNDER STATIONARY CULTURE

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dc.contributor.author Irfana Mariam
dc.contributor.author Kanwal Manzoor
dc.contributor.author Sikander Ali
dc.contributor.author Ikram-ul-Haq
dc.date.accessioned 2023-03-06T07:00:18Z
dc.date.available 2023-03-06T07:00:18Z
dc.date.issued 2009-04-20
dc.identifier.citation Mariam, I., Manzoor, K., Ali, S., & Ul-Haq, I. (2009). Enhanced production of ethanol from free and immobilized Saccharomyces cerevisiae under stationary culture. Pak. J. Bot, 41(2), 821-833. en_US
dc.identifier.issn 0556-3321
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/17499
dc.description.abstract In the present work, studies were carried out on the ethanol production by free and immobilized Saccharomyces cerevisiae GC-IIB31 under stationary culture. Cane molasses in different concentration was used as sugar source for maximum conversion of reducing sugar into ethanol. The substrate was optimized after maintaining different levels of sugar concentrations (12-21%), medium pH (4.0-5.5), incubation temperatures (25-30°C), volume of fermentation medium (200-350 ml) and reuse of immobilized yeast cells. Immobilized yeast cells gave significant results up to four consecutive batches. Rate of ethanol production was maximal with the free cells. The results indicated that 2 g vegetative cells of yeast on utilizing molasses at 15% sugar level with medium pH 4.5 at 30°C and 300 ml fermentation volume in 500ml Erlenmeyer flasks gave maximum ethanol production with both free and immobilized yeast cells. Maximum ethanol production by immobilized yeast cells was obtained in the 4th batch after which it declined markedly. The optimal results are highly significant (p≤0.05, LSD 3.962). en_US
dc.language.iso en en_US
dc.publisher Karachi: Pakistan Botanical Society, University of Karachi en_US
dc.title ENHANCED PRODUCTION OF ETHANOL FROM FREE AND IMMOBILIZED SACCHAROMYCES CEREVISIAE UNDER STATIONARY CULTURE en_US
dc.type Article en_US


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