Studies on the nutritional requirements of bacteria
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چکیده
منابع مشابه
Studies on the nutritional requirements of bacteria. II. On the nutrition of Shigella dysenteriae.
The synthetic medium for Shigella dysenteriae which has hitherto been known contains many amino acids and also niacin-amide, although the necessity of which remains obscure (5, 11,12) . We have been examining the process of the evolution of the bacterial nutrition (or the retroevolution), especially about the nitrogen source. It is the purpose of this paper to report the nutritional nitrogen so...
متن کاملStudies on the nutritional requirements of bacteria, III. Nitrogen requirements of dysentery bacilli in the synthetic medium.
The National Institute of Health of Japan, Tokyo (Received for publication, March 30, 1950) Evolutional steps of -nitrogen requirements of bacteria have been set up as follows. N2-N03-NH4-amino nitrogen-amino nitrogen+growth factor. Dysentery bacilli belong to the last step (3, 4, 6). As shown in the preceding report (5), Shigella dysenteriae (Shiga type) belongs to the transition zone between ...
متن کاملStudies on Cultural Requirements of Bacteria
It is a well-recognized fact that the nutritional requirements of an individual strain of any organism may be materially altered by prolonged cultivation on artificial media. Examples are so numerous and so well known that they need not be reviewed in detail. In many instances such changes are accompanied by alterations in the nature of the organism itself as in smooth to rough variation, while...
متن کاملStudies on the Nitrogen Requirements of Some Ruminal Cellulolytic Bacteria.
Knowledge of the nitrogen compounds utilized for growth of ruminal cellulolytic bacteria is of considerable importance to an understanding of the nitrogen economy of ruminants and of factors affecting ruminal cellulose digestion. Work with mixed cultures of bacteria from the rumen has shown that cellulose digestion occurs with ammonia or urea, which rapidly yields ammonia, as the sole source of...
متن کاملStudies on the nutritional requirements of the fusobacteria. II. Requirements for pantothenate and purines.
In a previous study on the nutritional requirements of Fusobacterium nucleatum it was reported that growth factors were present in yeast extract for these microorganisms (Omata, 1953). Further studies were made to elucidate the nature of these growth factors in a simplified medium under different environmental conditions. In this present study it has been found that pantothenic acid, tryptophan...
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ژورنال
عنوان ژورنال: Nippon Saikingaku Zasshi
سال: 1952
ISSN: 1882-4110,0021-4930
DOI: 10.3412/jsb.7.229