Lipoquinones of some Spore-forming Rods, Lactic-acid Bacteria and Actinomycetes

[Susceptibility of spore-forming butyric acid bacteria to antimicrobial agents].

Antimicrobial agents occasionally cause certain adverse effects, such as diarrhea and loose stool, by altering the composition of the intestinal flora. Antibiotic-resistant lactic acid bacteria are used to prevent these adverse effects. Although these bacteria are not resistant to several recently introduced antimicrobial agents, bacterial preparations are still sometimes prescribed concomitant...

Threonineserine antagonism in some lactic acid bacteria.

Various investigators have reported antagonism between amino acids in the nutritional requirements of microorganisms. Snell and Guirard (1) have reported the inhibitory effect of glycine, serine, p-alanine, and threonine on the utilization of alanine. Gladstone (2), using BaciZZus anthrucis, found that certain amino acids prevented growth when added singly to a medium capable of supporting grow...

Antimicrobial Effect of Lactic Acid Bacteria against Common Pathogenic Bacteria

Abstract       Background and Objective: Probiotics are living microorganisms that have beneficial effects on the health of digestive system. The aim of this study was to evaluate the antimicrobial ability of acidic and neutral supernatants (culture supernatant) of lactic acid bacteria against common bacterial pathogens.        Meth...

Some Mineral Requirements of the Lactic Acid Bacteria*

Although the requirements of several lactic acid bacteria for organic nutrients are known in considerable detail (1,2), knowledge of the mineral nutrition of this same group of bacteria is scanty. In chemically defined media, the mineral mixture most commonly used has been that of Speakman (3), which contains K+, Naf, Mg++, Mn++, Fe++, PO,“, S04* and Clions. Of these, previous investigations ha...

Stress response of some lactic acid bacteria with bionanotehnological applications