Bacteria Streptococcus

Saddleback tamarin monkeys, Saguinisfuscicollis, harbor a complex microflora in the secretions of their circumgenital glands. Coagulase-negative staphylococci, Gram-negative bacteria. Streptococcus spp., and coryneform bacteria were... 

Fig. 5.21. The end-products (circled) of microbial fermentations of pyruvate. Letters indicate the organisms able to perform these reactions. (/<) Lactic acid bacteria (Streptococcus, Lactobacillus) (B) Clostridium propionicum (C) Yeast, Zymomonas mobilis, Sarcina ventriculr, (D) Enterobacteriaceae (Coli-aerogenes) (E) Clostridia, ...

Yoghurt products are manufactured by using special micro-organisms, normally lacto-bacillus bulgaricus and streptococcus thermophilus. Lactobacillus bulgaricus converts proteins into amino acids. The bacteria streptococcus thermophilus produces the typical yoghurt flavour by using these amino acids as nutritional substrates. 

Gr -positive bacteria Streptococcus pyogenes, Staphylococcus aureus, and Enterococcus faecalis with minimum inhibitory concentration (MIC) values ranging from 0.8 to 2.3 p,gml . ... 

Coley s Toxins are the by-products from two common bacteria. Streptococcus pyrogenes and Serratia marcescens. The toxins can cause a fever anywhere from slightly above normal to 105°F, and a pulse rate of 100 or more, and accompanying chills. In other words, flu-like symptoms. To quote directly from Moss s book ... 

Can cause human disease, potentially hazardous, but unlikely to spread to the community, effective prophylaxis or treatment usually available Bacteria streptococcus ssp. legionella ssp. Fungi Candida albicans Vimses hepatitis A... 

Vodnar, D.C. Socaciu, C. Rotar, A.M. StanUa, A. Morphology, ETIR fingerprint and survivability of encapsulated lactic bacteria (Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus) in simulated gastric juice and intestinal juice. Int. J. Food Sci. Technol. 2010, 45 (11),... 

Bacterial pathogens. Four standard laboratory strains of bacteria (Streptococcus aurealis, Staphylococcus epidermis. Pseudomonas aeroginosa, and Escherichia coli) were cnosen on the basis of literature pertaining to... 

Encapsulated bacteria. Streptococcus pneumoniae, Haemophilus influenzae. Neisseria meninp tidis... 

Lactate. Hard rennet cheeses represent a selective habitat for propionic acid bacteria, since they contain lactate formed as the end product of lactose fermentation by lactic acid bacteria. Unlike many other bacteria, propioni-bacteria can utilize lactate efficiently, which is the reason why propioni-bacteria are so abundant in hard, ripened cheeses. Propionic acid bacteria use lactate best in the presence of yeast extract (Antila, 1954), but even higher stimulatory effect is exerted by cell-free extracts of lactic acid bacteria. Streptococcus thermophilus and Lactobacillus spp. (Hietaranta and Antila, 1953). Lactate as a carbon source supports higher growth rates of propionic acid bacteria than lactose (El-Hagarawy et al., 1954). 

A limited amount of gram-positive bacteria (Streptococcus sp. and Pasteurella sp.) are able to synthesize a polysaccharide from the upper capsule (1 mm thick) they create [31,32]. The majority of such microorganisms are pathogenic to humans and animals, but they are also able to parasite in the intercellular space of the mammal s tissue. That is why there is high demand for these microorganisms ... 

Bacterial off-flavours result from the growth of psychrophiUc bacteria that are present in milk due to poor sanitation or milk handling practices. Fruit odour is caused by carboxylic acid esters produced by bacteria Pseudomonas fragii, and a malt smell (caused by the presence of methylbutanal, 2-methylbutanal and 2-methylpropanal) is produced by bacteria Streptococcus lactis var. maltigenes and a phenolic odour by bacteria Bacillus circulans. Rancid smell, caused by lower fatty acids from butyric to lauric acids, is manifested as a result of lipolysis by milk lipase or bacterial lipases. 

M. Yohda, H. Okada and H. Kumagai, "Molecular cloning and nucleotide sequencing of the aspartate racemase gene from lactic acid bacteria Streptococcus thermophilus", Biochimica et Biophysica Acta 1089,234-240 (1991). 

Many examples have been reported on the biosurfactants potential as anti-adhesive coatings. The amount of biofilm formed by Salmonella typhimurium. Salmonella enterica, Escherichia coli and Proteus mirabilis in vinyl urethral catheters coated with surfactin was reduced as compared to the uncoated controls [124], Also, biosurfactants from probiotic lactobacilli successfully prevented the adhesion of uropatho-gens, and subsequent urogenital infections [19-21, 125], Biosurfactants from lactic acid bacteria (Streptococcus ther-mophilus A and Lactococcus lactis 53) were effectively used to avoid microbial colonization of silicone rubber voice prosthe-ses, thus their premature failure [26,27]. These bacterial [22] and Lactobacillus paracasei [126] biosurfactants were found to possess antimicrobial and anti-adhesive activity against... 

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