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ArtikelSelection of Yeast Strains for Ethanol Fermentation of Glucose-Fructose-Sucrose Mixture  
Oleh: Jasman ; Prijambada, Irfan Dwidya ; Hidayat, Chusnul
Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Indonesian Journal of Biotechnology vol. 17 no. 2 (Dec. 2012), page 114-120.
Topik: Yeast; fermentation; mixed culture; sugar; ethanol.
Fulltext: 140_Ros.pdf (140.24KB)
Isi artikelThis study was aimed to compare the ability of some yeast strains to consume sugars (sucrose, glucose and fructose) and to convert them into ethanol during fermentation. The results of this comparison will be the basis of considerations in choosing the right strain to be used as a mixed culture to increase the production of ethanol from substrate containing a mixture of sucrose, glucose and fructose, such as juice of cane and sweet sorghum. The study was conducted using fermentation in substrate consisting of glucose, fructose, and sucrose separately, glucose-fructose mixture, and glucose-fructose-sucrose mixture using some yeast strains: FNCC3012, OUT7009, OUT7027, OUT7055, OUT7080, OUT7096, OUT7903, OUT7913, and OUT7921. Following the fermentation, analysis of the produced ethanol and the remaining sugar was conducted. The results of study indicated that the strains with the highest substrate consumption were OUT7921, OUT7096, OUT7055, OUT7027, and OUT7913 for glucose, fructose, glucose-fructose mixture, sucrose, and glucosefructose- sucrose mixture, respectively. Strains that produced highest concentration ethanol were OUT7096 in glucose and sucrose substrates, OUT7921 in substrate of glucose-fructose mixture and sucrose, OUT7913 in substrate of glucose-fructose-sucrose mixture. Upon consideration of each strain capacity, both in consuming sugar and producing ethanol, the recommended strains for use in mixed culture in bioethanol fermentation using mixed substrate of glucose, fructose and sucrose are OUT7096, OUT7913, and OUT7921.
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