منابع مشابه
Studies on Sucrose-Induced Autolysis of Clostridial Cells Part 1. Induction of a Rapid Bacterial Autolysis by Sucrose Treatment
Growing cells of Clostridium saccharoperbutylacetonicum Nl-4 (ATCC 13564) were rapidly autolyzed in the presence of 0.3 to 0.5M sucrose. This autolysis was apparently induced by the treatment with sucrose, and termed “sucrose-induced autolysis.” The maximum effect was shown at 0.35M sucrose, exhib i t ing about 50% loss of initial turbidity of the cell suspension. The rate of lysis depended on ...
متن کاملAutolysis of Escherichia coli.
Autolysis of unwashed exponential-phase Escherichia coli cells was efficiently promoted by first submitting them to a quick downshock with distilled water before an upshock with 0.5 M sodium acetate, pH 6.5. The association of these two osmotic shocks had a remarkable synergistic effect and led to significant decreases in turbidity and viability. Different factors influencing the rate of cell l...
متن کاملAutolysis of Bacterial Cells Leads to Formation of Empty Sheaths by Leptothrix spp
The aquatic, Fe-oxidizing bacteria Leptothrix spp. produce uniquely shaped extracellular sheaths composed of organic bacterial polymers encrusted with inorganic elements from its aquatic environments. At the initial stage of sheath formation, bacterial cells were aligned in the sheath, but later most sheaths became empty. Here, we studied the mechanism of sheath hollowing by examining an isolat...
متن کاملStudies of Autolysis
In 1904 Lane-Claypon and Schryverl reported a latent period in autolysis amounting in the normal liver to about 4 hours. In the livers of fasting animals the latent period was absent or much shorter than in the well fed. If active trypsin preparations were introduced into the autolyzing liver mass, digestion began at once. These observations led the authors to the conclusion that in the living ...
متن کاملInteraction between pH, autolysis promoters and bacterial contamination on the production of yeast extracts
Bakers' yeast (Saccharomyces cerevisiae) cell suspensions were submitted to autolysis at various pH values (4.0, 5.5, 7.0 and 8.5) and with chemical autolysis promoters (ethyl acetate, chitosan). In one series of assays, bacterial contaminants were added at 10 CFU/ml. Autolysis yields, total nitrogen (total N) and a-amino nitrogen (a-amino N) composition as well as turbidity of the yeast extrac...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1922
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.7.6.551-577.1922