|
|
|
|
|
| Soares,Giselle A.M.; Sato,Hélia H.. |
| The strain Saccharomyces cerevisiae Y500-4L, previously selected from the must of alcohol producing plants and showing high fermentative and killer capacities, was characterized according to the interactions between the yeasts and examined for curing and detection of dsRNA plasmids, which code for the killer character. The killer yeast S. cerevisiae Y500-4L showed considerable killer activity against the Fleischmann and Itaiquara commercial brands of yeast and also against the standard killer yeasts K2 (S. diastaticus NCYC 713), K4 (Candida glabrata NCYC 388) and K11 (Torulopsis glabrata ATCC 15126). However S. cerevisiae Y500-4L showed sensitivity to the killer toxin produced by the standard killer yeasts K8 (Hansenula anomala NCYC 435), K9 (Hansenula... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer yeast; Saccharomyces cerevisiae; Killer toxin. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300012 |
| |
|
| |
|
| |
|
|
| Bajaj,Bijender K.; Sharma,S.. |
| Saccharomyces cerevisiae HAU-1, a time tested industrial yeast possesses most of the desirable fermentation characteristics like fast growth and fermentation rate, osmotolerance, high ethanol tolerance, ability to ferment molasses, and to ferment at elevated temperatures etc. However, this yeast was found to be sensitive against the killer strains of Saccharomyces cerevisiae. In the present study, killer trait was introduced into Saccharomyces cerevisiae HAU-1 by protoplast fusion with Saccharomyces cerevisiae MTCC 475, a killer strain. The resultant fusants were characterized for desirable fermentation characteristics. All the technologically important characteristics of distillery yeast Saccharomyces cerevisiae HAU-1 were retained in the fusants, and in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer yeast; Distillery yeast; Saccharomyces cerevisiae; Molasses; Ethanol fermentation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200030 |
| |
|
|
| Soares,Giselle A. M.; Sato,Hélia H.. |
| The strain Saccharomyces cerevisiae Y500-4L, selected from the must of alcohol producing plants, liberates a toxin which is lethal to the commercial yeast produced by Fleischmann Royal Nabisco and other strains of yeast. This toxin was characterized, and the maximum production was obtained after 24 hours of incubation at 25ºC in YEPD medium. The maximum activity was achieved between pH 4.1 and 4.5 and between 22 and 25ºC and maximum stability in the pH range 3.8 to 4.5 at -10ºC. The killer toxin was inactivated by heating at 40ºC for 1 hour at pH 4.1. After concentration by ultrafiltration of culture supernatants and purification by gel filtration chromatography, the molecular weight of the purified toxin was estimated by SDS-PAGE to be about 18-20 kDa. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer toxin; Saccharomyces cerevisiae; Killer yeast. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000400010 |
| |
|
|
|
