Saccharomyces rosei

Margaritis, A. and Bajpai, P., Ethanol production from Jerusalem artichoke tubers (Helianthus tuberosus) using Kluyveromyces marxianus and Saccharomyces rosei, Biotechnol. Bioeng., 24, 941-953, 1982a. 

Torulaspora delbrueckii (anamorp Candida colliculosa formerly Saccharomyces rosei) has a moderate tolerance to ethanol (<12.5 vol.% Table 8D.6) and produces wines which resemble those made with Saccharomyces cerevisiae. Production of higher alcohols is however highly variable and strain dependent. Because this yeast produces comparatively low concentrations of acetic acid, ethyl acetate, acetaldehyde and acetoin, its potential suitability for wine production has been suggested by several studies (Cabrera et al. 1988 Ciani and Ferraro 1998 Herraiz et al. 1990 ... 

Arnold (51) partially purified such an enzyme from cell-free extracts of bakers yeast Matile et al, (45) and Cortat et al. (44) demonstrated the existence of glucanase-containing vesicles within the cytoplasm of Sac-charomyces cerevisiae. These vesicles contained exo- as well as endo-glucanases but the enzymes were not studied in detail. Fleet and Phaff (47) obtained qualitative evidence for the occurrence of endo-/ -( 1 — 3) glucanases in the cell walls of Saccharomyces rosei, Kluyveromyces fragilis, Hansenula anomala, Pichia pastoris, and Candida utilis. K. fragilis and H. anomala contained only exo-glucanase in cell extracts (38). 

Schic saccharomyces octosporus Sporobolomyces sp. Torulaspora rosei Torulopsis Candida... 

Saccharomyces yeasts are rapid fermentors. S. cerevisiae and S. bayanus produce up to 18—20% ethanol. The cells are ovoid to spherical, eUiptical, or elongated (especially under conditions of nitrogen starvation). Vegetative propagation is by multilateral budding. S. uvarum and S. rosei occur earher in the fermentation, when S. rosei may produce up to 6—8% ethanol before being overgrown by the other Saccharomyces yeasts. S. cerevisiae may produce up to 18-20% ethanol (28). 

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