منابع مشابه
Starch hydrolyzing streptococci.
The ability to hydrolyze starch is a property that is scattered among streptococcal species in 3 of the 4 physiological divisions described by Sherman (1937), the exception being members of the Enterococcus. A single reference to a starch hydrolyzing enterococcus is Mann's (Mann et al., 1954) report of a "starch-fermenting Streptococcus faecalis." Outstanding among the nonhemolytic streptococci...
متن کاملPurification and properties of starch hydrolyzing enzymes in mature roots of sugar beets.
Mature roots of sugar beets, which accumulate large amounts of sucrose but not starch, nevertheless contained acid and neutral amylases, judging from their pH optima, as well as pullulanase. Acid and neutral amylases were partially purified by procedures including fractionation with ammonium sulfate, ion exchange column chromatography, and gel filtration. Acid amylase was classified as an exoam...
متن کاملHydrolyzing metal salts as coagulants*
Aluminium and ferric salts are widely used as coagulants in water and wastewater treatment. They are effective in removing a broad range of impurities from water, including colloidal particles and dissolved organic substances. Their mode of action is broadly understood in terms of essentially two mechanisms: charge neutralization of negatively charged colloids by cationic hydrolysis products an...
متن کاملStreptococci
they used standardized regression coefficients, but this was not clarified.) Also, there are a number of minor typographic errors. The most significant findings were that . .. program impact was primarily on savings and socialization of the aged rather than health and nutrition." Moreover, in 1976, less than 3 percent of the Boston area aged (65 or more) residents participated in the program, a...
متن کاملNontransformable Streptococci on the Transformation of Streptococci
PERRY, DENNIS (Northwestern University Medical School, Chicago, Ill.), AND HUTTON D. SLADE. Effects of filtrates from transformable and nontransformable streptococci on the transformation of streptococci. J. Bacteriol. 91:2216-2222. 1966.-The nature of the transformation competence factor from a group H streptococcus was investigated. The activity of competence factor reached a maximum at the t...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1960
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.79.2.230-235.1960