Characterization of lipid accumulation and lipidome analysis in the oleaginous yeasts Rhodosporidium azoricum and Trichosporon oleaginosus.

The influence of cultural conditions on lipid production was investigated in two species, Trichosporon oleaginosus and Rhodosporidium azoricum. We showed that nitrogen limitation is not the main factor triggering the mechanism of lipid accumulation in T. oleaginosus.

Microbiological and genetic identification of some probiotics proposed for medical use in 2011.

The aim of this work was to evaluate if dietary supplements for medical use available on the Italian and European market in 2011 were correctly labelled in terms of amount of viable bacteria, identity of species or genera and lack of cross contamination by species out of label. Fourteen in twenty-four products (58%) contained all the labelled species in the declared amount and were free of bacterial contamination. Ten in twenty-four products (42%) did not contain the labelled bacterial amount.

Cultivable and pyrosequenced fecal microflora in centenarians and young subjects.

Goal: The aim of this study was to characterize the composition of the intestinal microbiota in healthy centenarians in comparison with younger adults, considering both quantitative and qualitative aspects of gut community structure.

Background: The gut microbiota plays an essential role in human health. Toward seniority, its balance is affected by deep physiological changes.

Macrolide resistance and in vitro selection of resistance to antibiotics in Lactobacillus isolates.

Spreading of resistance to antibiotics is of great concern due to the increasing rate of isolation of multiresistant pathogens. Since commensal bacteria may transfer determinants of resistance to pathogens, studies on development of resistance should include also lactobacilli. Resistance to macrolides, penicillins and tetracycline was determined in 40 isolates of Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus crispatus, and Lactobacillus casei isolated from faeces of apparently healthy volunteers.