Russian scientists first read the genome of microbes in butter and found a number of opportunistic species, including dangerous for children. The study was conducted in Voronezh state University and Voronezh state University of engineering technologies. Results published in the journal of Foods, reports RIA “Novosti”.
Researchers using high-throughput sequencing is analyzed 21 samples of different brands of butter. They took 1 gram of the product, finely sliced it and added to a special culture medium in Petri dishes. Genome-grown cells “read” on a special device (sequencing). And used next generation sequencing, is a set of methods for the determination of DNA sequences or RNA, allowing for once to set multiple genomes. We found only 94 kinds of bacteria, including opportunistic, i.e. such which can be dangerous under certain circumstances, for example a weak immune system or an unbalanced diet.
Useful lactic acid producer Lactococcus and Lactobacillus, which are part of some cultures, prevailed only a quarter of the samples. The oil was heaviest contaminated with bacterium Bacillus cereus, can produce toxins and cause diarrheal syndrome. Surprise was the presence in the oil Cronobacter sakazakii, previously it was recognized that this bacterium may have children up to year to cause sepsis, meningitis or enterocolitis with severe complications and even death.
the Study showed the need for optimization of the methodology to detect dangerous bacteria in food. Also the results of the study emphasize the need for strict quality control of dairy products with high fat content.
Recall that the dairy products — the excellent environment for the growth of many dangerous bacteria, e.g. Salmonella. In Russia, the product quality according to established Standards, but, even with compliance with all standards of production to ensure the absence of microbial contamination is impossible, as it often happens that the microorganisms can be detected only with the involvement of the latest scientific methods.
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