Rouxii

Saccharomyces cerevisiae S. cerevisiae var. ellipsoideus S. carlsbergensis S.fragilis S. rouxii S. delbrueckii... 

The function of Jisper Uis fermentation appears to be primarily the breakdown of protein and polysaccharides by secreted proteases and amylases. Replacement oiPispergillis by chemical or enzymatic hydrolysis has no major impact on the organoleptic properties of the sauce. Likewise, inoculation with a pure culture of Ixictobacillus delbrueckii to carry out the acetic acid fermentation produces a normal product. The S. rouxii and Toru/opsis yeasts, however, are specifically required for proper flavor development. 

Fig. 2. Changes of P. halophilus Z. rouxii and C. versatilis in Moromi Mash (Reproduced with permission from ref. 3. Copyright 1988 Brewing Society of Japan)...

Effect of Alcohol Fermentation on Koji Autolysis. Z. rouxii was used as an inoculum in the study of alcohol fermentation. Reports have suggested that the initial pH of the inoculum is very important to the proliferation of yeast such as Z. rouxii when grown under high concentrations of NaCl. Five autolysates were prepared... 

Note Other microorganisms may be included in the test on an optional basis, if they represent likely contaminants to the preparation. Zygosac-charomyces rouxii may be used for oral preparations containing a high concentration of sugar. 

Hoover (1993) described the production of chitosan from mycelia of Absidia coerulea, Mucor rouxii, Gongronella butieri, Phycomyces blakesieeanus, and Absidia blakesleeana. A. coerulea ATCC 14076 and NRRL 1315 were the best producers of chitosan among the strains examined. Crestini et al. 

Chatterjee, S., Adhya, M., Guha, A. K., and Chatterjee, . P. (2005). Chitosan from Mucor rouxii Production and physico-chemical characterization. Process Biochem. 40,395-400. 

LY300164, an orally administered benzodiazepine developed by Eli Lilly (India-napolis/IN, USA), is efficaceous against amylotropic lateral sclerosis (ALS, Lou Gehrig s disease). In an early key step, a 3,4-disubstituted phenylacetone is reduced to the (S)-alcohol by yeast whole cells from Zygosacchamyces rouxii (ATCC 14462) in > 99.9% e.e. and 96% yield. The subsequent steps encompass a series of chemical steps (Figure 13.30). Volumetric productivity is optimized in remarkable fashion the ketone substrate is introduced adsorbed on an XAD-7 resin to keep the concentration in solution (2 g L-1) below the toxicity limit (6 g L-1). Product alcohol likewise is adsorbed so that a loading of 80 g L-1 of substrate or product is achieved. 

On this basis, Cavagna et ah (2008) inoculated a must for the production of Vin Santo Trentino with two strains of non -Saccharomyces yeast C. zemplinina and Z. rouxii. Due to their osmophile characters, both of these showed a good performance at the initial stages of the fermentation, and therefore, the Authors considered that these two strains are suitable for the initial stages of fermentation, to lower the sugar concentration of the must. 

Accordingly, Ganucci et al. (2009) evaluated at laboratory scale the fermentative behavior of a Z. rouxii strain in the fermentation of must (44% sugar) obtained from dried Maivasia and Trebbiano grapes, used for Vin Santo production. This strain was able to dominate the indigenous population of S. cerevisiae, allowing to reach in the relevant wine the same ethanol concentration obtained in control trials inoculated with a S. cerevisiae strain. Moreover, lower levels of acetic acid and ethyl acetate were produced in the fermentations carried out by Z. rouxii. 

Martorell, P., Stratford, M., Steels, H., Femandez-Espinar, M. T., and Querol, A. (2007). Physiological characterization of spoilage strains of Zygosaccharomyces bailii and Zygosac-charomyces rouxii isolated from high sugar environments, lnt. ]. Food Microbiol. 114, 234-242. 

On the synthetic route to a novel class of orally active 2,3-benzodiazepines, scientists at Lilly have described a yeast reduction using Zygosaccharomyces rouxii (ATCC 14462) (Scheme 19.5).76-78 This intermediate is used in the synthesis of a novel class of benzodiazepines such as LY-300164 (1). The choice of this yeast strain came from a screen of numerous microbes. The product was isolated in >95% yield and >99.9% ee by use of an adsorbant polymeric resin.76-78... 

Taing, O. and Taing, K. 2007. Production of Malic and Succinic Acids by Sugar-Tolerant Yeast Zygosaccharomyces Rouxii. Eur. Food Res. Technol., 224, 343-347. 

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