Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Yeast activity

Active alkali Active chlorine Active dry yeast Active dry yeasts Active oxygen (AO)... [Pg.15]

In baked products, salt controls fermentation (qv) by retarding yeast activity, preventing wild fermentation, important in making a uniform product. During pickle-making, salt brine is gradually increased in concentration, reducing the fermentation rate as the process proceeds to completion. Salt is also... [Pg.185]

The effect of osmotic pressure on yeast activity is of great importance, and is often overlooked. At salt concentrations up to 1.5%, the effect is slight salt concentrations of 2—2.5%, which are common in bread doughs, inhibit yeast activity considerably. Likewise, sugar concentrations above 4% produce apparent inhibition. Consequently, yeast-raised sweet doughs (15—20% sugar), contain very high yeast concentrations. [Pg.390]

The production of soda crackers is also based on a mixed fermentation. Doughs for cracker production are inoculated with very smaH amounts of bakers yeast. During the first 3—5 h of the 18-h fermentation, yeast activity predominates thereafter bacterial fermentation causes a rapid decrease in pH through formation of lactic acid. [Pg.390]

DIAZOLIDINYL UREA Water soluble Weak anti-yeast activity... [Pg.149]

Anti-yeast activity. Ethanol (100%) extract of the seed, on agar plate at a concentration of 18.7 mg/mL, was active on Candida albicans. Water extract of the seed, on agar plate was inactive on Candida albicans °b Arrhythmogenic effect. Hot water extract of the dried seed, administered orally to adults with cardiac abnormalities at a dose of 200 mg/person, produced equivocal effect . [Pg.166]

Anti-yeast activity. Ethanol (50%) extract of the dried root, on agar plate at a concentration of 500 mg/mL, was inactive on Candida albicans and Saccharomyces pasta-rianus°. ... [Pg.206]

Anti-yeast activity. The essential oil, on agar plate, was inactive on Saccharomyces cervisiae ° . Ethanol (95%) extract of the dried rhizome, in broth culture at a concentration of 10%, was inactive on Candida albicans, Candida glabrata, and Candida tropicalis ° °. Ethanol (90%) extract of the dried rhizome, on agar plate at a concentration of 500 mg/disc, was inactive on Candida albicans ° ... [Pg.528]

Activation with alcohol dehydrogenase from yeast ° Activation with alcohol dehydrogenase from horse liver... [Pg.427]

Donald, R.G.K., Schindler, U., Batschauer, A. Cashmore, A.R. (1990). The plant G-box promoter sequence activates transcription in Saccharomyces cerevisiae and is bound in vitro by a yeast activity similar to GBF, the plant G-box binding factor. The EMBO Journal 9, 1727-35. [Pg.302]

Juice solids have a critical effect not only on wine quality (discussed under juice clarification) but also on yeast activity. A juice that is too clean, from excessive pectic enzyme treatment, filtration, or centrifuging, may have difficulty completing fermentation. Groat and Ough (24) and others have reported that juice solids levels below 0.1 to 0.5 percent resulted in slower fermentations. Levels of 0.5-2.5 percent solids are used commonly in the North Coast. [Pg.43]

Botrytis Effect on Fermentation. Peynaud et al. (28) suggest that Botrytis cinerea ( noble rot ) produces a substance that inhibits yeast activity. While this substance has not been isolated in the United States, it has been the author s observation that botrytis-infected grapes ferment at a slower rate and have more difficulty completing fermentation. This fermentation inhibition also may be attributable to the higher initial °Brix and, later, to the ethanol and higher residual sugar content of the botrytized wines. [Pg.44]

Fig. 4 Reconstruction of the carotenoids biosynthetic pathway in S. cerevisiae. Heterologous activities t-HMGl 3 hydroxy-3-methylglutaryl-coenzymeA, ctrE geranylgeranyldiphosphate synthase (from Xanthophyllomyces dendrorhous), Ctrl phytoene desaturase, ctrYB bifunctional enzyme phytoene synthase and lycopene cyclase. Endogenous yeast activities ISIS I geranylgeranyldiphosphate synthase. Metabolites IPP isopentenyl diphosphate, GPP geranyl diphosphate, FPP famesyl-diphosphate, GGPP geranylgeranyl diphosphate... Fig. 4 Reconstruction of the carotenoids biosynthetic pathway in S. cerevisiae. Heterologous activities t-HMGl 3 hydroxy-3-methylglutaryl-coenzymeA, ctrE geranylgeranyldiphosphate synthase (from Xanthophyllomyces dendrorhous), Ctrl phytoene desaturase, ctrYB bifunctional enzyme phytoene synthase and lycopene cyclase. Endogenous yeast activities ISIS I geranylgeranyldiphosphate synthase. Metabolites IPP isopentenyl diphosphate, GPP geranyl diphosphate, FPP famesyl-diphosphate, GGPP geranylgeranyl diphosphate...
Wurz, R. E. M., Kepner, R. E., Webb, A. D. (1988) The biosynthesis of certain gamma-lactones from glutamic acid by film yeast activity on the surface of Flor Sherry. American Journal of... [Pg.392]


See other pages where Yeast activity is mentioned: [Pg.325]    [Pg.186]    [Pg.390]    [Pg.461]    [Pg.1029]    [Pg.294]    [Pg.116]    [Pg.128]    [Pg.441]    [Pg.16]    [Pg.125]    [Pg.384]    [Pg.398]    [Pg.401]    [Pg.1091]    [Pg.5]    [Pg.19]    [Pg.41]    [Pg.588]    [Pg.669]    [Pg.201]    [Pg.166]    [Pg.30]    [Pg.287]    [Pg.45]    [Pg.19]    [Pg.513]   
See also in sourсe #XX -- [ Pg.45 , Pg.162 , Pg.163 ]




SEARCH



© 2024 chempedia.info