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SOME ASPECTS OF THE PHYSIOLOGY OF CERTAIN NITRITE‐FORMING BACTERIA
Author(s) -
CUTLER D. WARD,
CRUMP. L. M.
Publication year - 1933
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1933.tb07766.x
Subject(s) - bacteria , nitrite , biology , ammonium , ammonia , sugar , nitrifying bacteria , microbiology and biotechnology , food science , botany , nitrate , biochemistry , nitrification , nitrogen , chemistry , ecology , organic chemistry , genetics
SUMMARY. 1. One hundred and four species of bacteria which produce small quantities of nitrite from ammonium sulphate have been isolated from niters receiving waste water from a beet sugar factory, and these bacteria do not differ in their behaviour on carbohydrates from non‐nitrifying bacteria from the same source. 2. Ammonium lactate is the salt of ammonia which is most readily oxidised. 3. In the majority of cases nitrite can also be utilised, by these bacteria in the course of growth. 4. There is a positive correlation between increase in bacterial numbers and the percentage nitrite in a culture during the initial growth period. 5. Nitrite may disappear slowly from solutions at a p H. of 4–8 when the bacteria have been killed by autoclaving; but this is not invariably the case.