[Study of microbial contamination of processed fresh vegetables and lettuce].

Investigations of microbial contamination and species composition of the Enterobacteriaceae family in fresh vegetables and lettuce has been conducted. The objects of study were new types of fresh ready-to-eat vegetable foods - salads, sliced vegetables and mixtures thereof, sampled at the main stages of production, including washing, antimicrobial treatment with sodium hypochlorite, and packaging in the film under vacuum. Quantitative analysis of Enterobacteriaceae levels in fresh and packaged vegetables and salads showed that their part in the total amount of microbial contaminants is large enough.

[The significance of some potentially pathogenic microorganisms in occurence of food toxicoinfections. Report 2. Assessment of the role of toxigenic strains of Bacillus cereus].

The data on nomenclature, classification and taxonomy of aerobic spore-forming Bacillus cereus are summarized. The main features of the two types of diseases, caused B. cereus, and statistical information on outbreaks of food-borne disease caused by B.

[The influence of probiotic fermented milk product on colon microbiota, hematological parameters and cell immunity in rats].

Influence of probiotic fermented milk product on the intestinal microbiota, hematological parameters and immune status of the experiment in vivo at Wistar rats was studied. It was shown, that entering of probiotic strains of Bifidobacterium bifidum 791, Bifidobacterium longum B-379M and Lactobacillus acidophilus NK1 u Streptococcus thermophilus in composition fermented milk products in the total quantity of 2,1 x 10(7) CFU/ sm3 in digestive tract within three weeks has a positive influence on the resident of colon microbiota. Significant increasing of population levels of Bifidobacterium, Enterobacteriaceae with normal biochemical properties, registered a strong tendency to increase the content of Lactobacteria, which led to a decreasing the number of potential pathogenic transient flora with pathogenic factors.

[Toxicological and sanitary characteristics of fullerene C60 administered to the rat gastrointestinal tract].

A four-week experiment dealing with the intragastric administration of fullerene C60 dispersion to rats has established that this substance in a dose of 1 to 10 mg/kg body weight causes a number of changes in the parameters of animals, such as reductions in relative liver weight and isoform CYP 1A2 activity and increases in glutathione reductase activity, eosinophils, and neutrophils. It is concluded that fullerene can affect the animals when orally given in the doses studied.

[Characteristics of collagen's material bifidogenic properties].

It is still essential to search for new, available food ingredients with bifidogenic effect, to study their safety, efficacy and production effectiveness upon the creation of functional foods. The review considers protein products such as collagens and their hydrolyzates, which are used in culture mediums as growth factor. They are treated, besides carbohydrate prebiotics, as potential bifidogenic nutrients.