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Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas. |
Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43).... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044 |
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Viana,Roberta Oliveira; Magalhães-Guedes,Karina Teixeira; Braga Jr.,Roberto Alves; Dias,Disney Ribeiro; Schwan,Rosane Freitas. |
Abstract The aim of this study was to develop a kefir apple-based vinegar and evaluate this fermentation process using new methodology with Biospeckle Laser. Brazilian kefir grains were inoculated in apple must for vinegar production. In this study, the microbial community present in kefir, and correspondent vinegar, was investigated using Matrix Assisted Laser Desorption/Ionization - Time of Flight Mass Spectrometry (MALDI-TOF MS) technique. Saccharomyces cerevisiae, Lactobacillus paracasei, Lactobacillus plantarum, Acetobacter pasteurianus and Acetobacter syzygii were the microbial species identified. S. cerevisiae, L. plantarum, A. pasteurianus and A. syzygii were found in smaller quantities at the beginning of the alcoholic fermentation, but were found... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeast; Saccharomyces; Lactobacillus; Apple; MALDI-TOF; Biospeckle Laser; Vinegar. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300592 |
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