Morphological changes of Lactobacillus bifidus var. pennsylvanicus produced by a cell-wall precursor

Glick, Mary Catherine; Sall, Theodore; Zilliken, F.; Mudd, Stuart

doi:10.1016/0006-3002(60)90251-1

Cited by 37 publications

(10 citation statements)

References 7 publications

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“…The essential factor in human milk, which was lacking in cow's milk (bifidus factor), was subsequently identified as N-acetyl-D-glucosamine-containing saccharides. These growth factors were shown to be used by this organism as a substrate for cell wall synthesis (41,113). Bifidus factor and related subjects have been studied extensively by Gy6rgy (53), Gy6rgy and Rose (56), Gyorgy et al (57,58), O'Brien et al (113), Pope et al (125), Rose and Gyorgy (138), and Zilliken et al (198)(199)(200)(201).…”

Section: Physiological and Biochemical Characteristics Nutrition And mentioning

confidence: 99%

Biology of the bifidobacteria.

Poupard¹,

Husain²,

Norris³

1973

Bacteriological Reviews

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Section: Physiological and Biochemical Characteristics Nutrition And mentioning

confidence: 99%

Biology of the bifidobacteria.

Poupard¹,

Husain²,

Norris³

1973

Bacteriological Reviews

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“…In a medium deficient in j3-methyl-D-glucosamine the bifid cell takes on a more 'branched shape' (Glick et al, 1960), and by adding certain amino acids (e.g. serine, alanine, aspartic acid) to a medium minimum and highly branched bifida cells become curved rods.…”

Section: Resultsmentioning

confidence: 99%

The Genera of Lactic Acid Bacteria

Wood¹,

Holzapfel²

1995

186

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“…Bifidobacteria are gram-positive, nonsporeforming anaerobic rods which are common to the digestive systems of many higher animals. Bifidobacteria have received attention as potential indicators of human fecal pollution, as mediators of increased host resistance to gastroenteritis in infants (3), because of their unique catabolic pathway (fructose 6-phosphate shunt) (4), and because of their bifurcating pleomorphic cellular morphology (10).…”

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confidence: 99%

Quantitative procedure for enumeration of bifidobacteria

Resnick¹,

Levin²

1981

Appl Environ Microbiol

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A membrane filter technique has been developed for the enumeration of bifidobacteria in natural aquatic environments. The technique is quantitative, selective, and differential. The medium (YN-6) contains: yeast extract, 2.0 g; agar, 1.5 g; polypeptone peptone, 1.0 g; vitamin-free Casamino Acids, 0.8 g; sodium chloride, 0.32 g; and L-cysteine hydrochloride, 0.003 g; in 100 ml of deionized water. The medium is adjusted to pH 7.0 before autoclaving. Nalidixic acid (80 micrograms/ml), neomycin sulfate (2.5 micrograms/ml), and bromcresol green (300 micrograms/ml) are included as selective and differential agents. After incubation for 48 h at 37 degrees C in an anaerobic environment, Gram-stained smears from green, glistening, smooth entire colonies are examined microscopically for typical bifidobacterial morphology. No significant difference in recoveries was observed when YN-6 was compared with reinforced clostridial agar, using bifidobacteria freshly isolated from feces and raw sewage. Using this technique with aquatic and fecal samples, less than 9% false-positive and 8% false-negative isolates were observed. These results indicated that the medium was able to satisfactorily recover organisms from a variety of situations.

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Morphological changes of Lactobacillus bifidus var. pennsylvanicus produced by a cell-wall precursor

Cited by 37 publications

References 7 publications

Biology of the bifidobacteria.

Biology of the bifidobacteria.

The Genera of Lactic Acid Bacteria

Quantitative procedure for enumeration of bifidobacteria

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