The Nutrition of Variants of Lactobacillus Bifidus*
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چکیده
The bacterial flora of the intestine of an infant that is being fed human milk is characterized by the predominance of a lactobacillus whose distinctive morphology of rods, clubs, and bifid forms has given it the name of Lactobacitlus biJidus (l-3). The possible importance of this intestinal organism to the health of the infant makes its study one of practical significance. Since its discovery in 1899 by Tissier (4) the nature and biological position of L. b$idus as a distinct entity has been the subject of controversy (5-7). The various strains used in the present study were isolated with difficulty. It is probable that the isolation procedure selected less fastidious variants or caused an adaptation of the strains normally present in the infant intestine. However, a study of the nutritional requirements of the isolated strains may serve as a starting point for the formulation of a medium nutritionally adequate for the more fastidious strains. Since L. bi$dus is found to predominate in the intestine of the infant receiving only human milk, it would seem that human milk affords a more beneficial medium for the propagation of this organism. Preliminary experiments revealed that the addition of milk to the culture media promoted the growth of the strains. Human milk was superior to cow’s milk, A knowledge of the nutritional requirements of L. bifidus seemed prerequisite to the understanding of the superiority of human milk, and for this purpose that the present investigation was undertaken.
منابع مشابه
Comparative Studies in the Manufacturing of Acidophilus, Bifidus and Acido-bifidus Milks
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متن کاملThe nutrition of variants of Lactobacillus bifidus.
The bacterial flora of the intestine of an infant that is being fed human milk is characterized by the predominance of a lactobacillus whose distinctive morphology of rods, clubs, and bifid forms has given it the name of Lactobacitlus biJidus (l-3). The possible importance of this intestinal organism to the health of the infant makes its study one of practical significance. Since its discovery ...
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تاریخ انتشار 2002