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sodium chloride+yeast...????

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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sodium chloride+yeast...????

Postby hunny » Mon Jan 30, 2006 12:32 pm

anyone knows about sodium chloride???anyway, i got information that the yeast will lose the function[rising bread] if yeast is put together with sodium chloride....
whEre iS de lOvE..??
lOvE iS viRgiNaL...
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Postby Dr.Stein » Tue Jan 31, 2006 7:47 am

Sodium Chlorde = NaCl, kitchen salt...

Basic Life Sci. 1990;52:367-71

Antimutagenesis in yeast by sodium chloride, potassium chloride, and sodium saccharin

by Parker KR, von Borstel RC.
Department of Genetics, University of Alberta, Edmonton, Canada.

Abstract

Aqueous salt solutions containing NaCl, KCl, MgCl2, Na2SO4, CaCl2, NH4Cl, or sodium saccharin are mutagenic in yeast when logarithmic growth of cells is interrupted by exposure to a 0.5-2.0 M salt solution. Stationary-phase cells are not mutated by this treatment. When placed in an enriched medium with the salt, the stationary-phase cells grow after a prolonged lag period. The compounds tested (NaCl, KCl, and sodium saccharin), under conditions in which growth in medium can take place, exhibit an antimutagenic response as measured by the compartmentalization test. The antimutagenic action of salt solutions in yeast is concentration-dependent. Unlike the mutagenic action of these compounds, which approximates an osmolality-dependent response, the antimutagenic action seems to be correlated with toxicity as measured by growth rate reduction at increasing concentrations of the compounds. For example, sodium saccharin and NaCl exhibit almost identical osmolalities; however, 0.3 M sodium saccharin reduces the growth rate much more than does 0.3 M NaCl. At these same molar concentrations, the spontaneous mutation rate for histidine prototrophy is, for the control, 6.2 x 10^-8 mutations/cell/-generation, 3.5 x 10^-8 with 0.3 M NaCl, and 1.7 x 10^-8 with 0.3 M sodium saccharin.

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