Comparative study on two commercial strains of Saccharomyces cerevisiae for optimum ethanol production on industrial scale.
Two commercial strains of Saccharomyces cerevisiae, Saf-Instant (Baker's yeast) and Ethanol red (Mutant) were compared for ethanol production during hot summer season, using molasses diluted up to 6-7 degrees Brix containing 4%-5% sugars. The yeasts were then propagated in fermentation vessels to st...
| Publicado en: | Journal of Biomedicine & Biotechnology pp. 419586 - 419587 |
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| Autores principales: | , , , , |
| Formato: | Journal Article |
| Publicado: |
Wiley-Blackwell
2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105081988&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105081988 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 11107243 137K jtl: Journal of Biomedicine & Biotechnology issn: 11107243 maglogo: N pubinfo: dt: 2010 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 105081988 2010748499 NLM20445743 PMC2860142 105081988 ppf: 419586 ppct: 1 formats: fmt: @attributes: type: P tig: atl: Comparative study on two commercial strains of Saccharomyces cerevisiae for optimum ethanol production on industrial scale. aug: au: Mukhtar K Asgher M Afghan S Hussain K Zia-Ul-Hussnain S affil: Alcohol Division, Shakargnaj Mills Limited, Jhang, Punjab 38040, Pakistan. sug: subj: Ethanol Metabolism Microbiological Techniques Yeasts Metabolism Acetic Acid Metabolism Antibiotics Pharmacodynamics Culture Media Fermentation Glucose Pharmacodynamics Food Phosphates Pharmacodynamics Urea Pharmacodynamics Peptides Pharmacodynamics ab: Two commercial strains of Saccharomyces cerevisiae, Saf-Instant (Baker's yeast) and Ethanol red (Mutant) were compared for ethanol production during hot summer season, using molasses diluted up to 6-7 degrees Brix containing 4%-5% sugars. The yeasts were then propagated in fermentation vessels to study the effects of yeast cell count and varying concentrations of Urea, DAP, inoculum size and Lactrol (Antibiotic). Continuous circulation of mash was maintained for 24 hours and after this fermenter was allowed to stay for a period of 16 hours to give time for maximum conversion of sugars into ethanol. Saccharomyces cerevisiae strain (Saf-instant) with cell concentration of 400 millions/mL at molasses sugar level of 13%-15% (pH 4.6 +/- 0.2, Temp. 32 degrees C +/- 1), inoculum size of 25% (v/v), urea concentration, 150 ppm, DAP, 53.4 ppm and Lactrol,150 ppm supported maximum ethanol production (8.8%) with YP/S = 250 L ethanol per tone molasses (96.5% yield), and had significantly lower concentrations of byproducts. By selecting higher ethanol yielding yeast strain and optimizing the fermentation parameters both yield and economics of the fermentation process can be improved. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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