نتایج جستجو برای: microorganisms
تعداد نتایج: 39576 فیلتر نتایج به سال:
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Background & Aims: Kefir is a complex composition of microbial species such as streptococci, mesophilic lactobacilli, lactose or non-lactose fermenting yeast and acetic acid bacteria. Numerous studies have been performed to indicate the positive therapeutic effect and healing properties of probiotic products. The aim of this study was to investigate the effect of cytotoxicity of kefir microorga...
The bacteriolytic activity of interleukin-2 and hen egg white lysozyme against 34 different species of microorganisms has been studied. It was found that 6 species of microorganisms are lysed in the presence of interleukin-2. All interleukin-2-sensitive microorganisms belong either to the Enterobacteriaceae, Bacillaceae, or the Lactobacillaceae family. It was also found that 12 species of micro...
Carotenoids are liposoluble pigments widely distributed in nature. More than 750 carotenoids are isolated from natural sources, but only a few kinds are used industrially. The production of carotenoid by microorganisms is to be expected, but few carotenoids originate from living things on land. And there is little knowledge about carotenoid-producing microorganisms in the oceans. The possibilit...
Compared with plant detritus, animal detritus yields higher growth rates, survival, adult mass, and population growth of container-dwelling mosquitoes. It is unclear whether the benefit from animal detritus to larvae results from greater microorganism growth, direct ingestion of animal detritus by larvae, or some other mechanism. We tested alternative mechanisms by which animal detritus may ben...
Thin films of organically modified silica (ORMOSILS) produced by a sol-gel method were imprinted with whole cells of a variety of microorganisms in order to develop an easy and specific probe to concentrate and specifically identify these microorganisms in liquids (e.g., water). Microorganisms with various morphology and outer surface components were imprinted into thin sol-gel films. Adsorptio...
Reports from this laboratory have described the existence of two different pathways for the biosynthesis of long chain monounsaturated fatty acids by microorganisms. In yeast, oleic and palmitoleic acids are formed oxidatively from the corresponding saturated acids by processes requiring molecular oxygen and TPNH (1). The same conversions have been demonstrated in AWycobacterium phlei (2), in t...
Our present in-depth knowledge of the physiology and regulatory mechanisms of microorganisms has arisen from our ability to remove them from their natural, complex ecosystems into pure liquid cultures. These cultures are grown under optimized laboratory conditions and allow us to study microorganisms as individuals. However, microorganisms naturally grow in conditions that are far from optimal,...
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