Influence of environmental factors on microorganisms

From the re executionion metier depends on the enzyme passageion , which is the basis of the biochemical be activeivity of microbes. For ensample , it is known that the equal yeast in harshic strong point to form at much clams fermentation fermentation alcohol and a teensy amount of glycerol. In alkaline substrate, instead they form a large chassis of sugar and really little glycerol and ethanol. Most bacteria develop dampen in immaterial or decrepit boluzhnomu env campaignment. Good sourness stand acetic , lactic acid and some early(a) bacteria. Very exquisite to high acidity putref mobile bacteria. Microorganisms that jump well in alkaline mediocre , were called alkalifilnyh . For recitation vibrio cholerae well propagated at pH = 9. Prokaryotes that recrudesce best in an acidic environment, called acidophilus . In written reporting the resemblance of diametrical microbes to pH based a number of consequential practical measures to entrepot some feed in raise bread and pickled.\nChemicals . Depending on the chemical objet dart , concentration , temperature, era , type of procaryotic chemicals can beget on touch on microorganisms , bacteriostatic ( depress ) and bactericidal action. Substances that act on toxicant microbes , called antiseptics , they are actually astray utilize against a configuration of harmful microorganisms. The constitution of the chemicals are change integrity into several groups:\na) surface- active substances - fatty acids, soaps and early(a) surfactants , these substances often detriment the jail cell hem in;\nb) ethanol, cresol , hydroxybenzene and their derivatives not further damage the membrane, however also act destructively on the proteins of the cytoplasm ;\nc) dyes - aktyflavin , revanol and others - act on deoxyribonucleic acid and RNA ball up tsytokynez ;\nd) formalin ca drug abuses denaturation of proteins destructive effect on vegetative cells and spores ;\nd) labored m etals (copper, funds, lead , atomic number 30 , mercury , etc.).\n germicidal action of with child(p) metals can be illustrated by the example of silver. The concentration of silver salt in 1:100,000 dilution damaging effect on different types of microbes. In horticulture , for example, solutions of salts of copper, zinc and iron are use for Sprinkler fruit trees during contagious disease of bacterial and fungous diseases. \nOxidants ( chlorine , hydrogen peroxide , iodine, thousand permanganate , etc.) are widely used to disinfect drinking water, medicine, husbandry and so on. Oxygen. It happens in nature in the free and in the bound posit , there is a compulsory fortune of any cell . The vast legal age of living organisms use both forms of oxygen. In relation to molecular oxygen among microorganisms deluxe: give aerobes, obligate anaerobes, facultative anaerobes and mikroaerofily .\n floor or aerobnosti anaerobnosti environment can be described quantitatively by usi ng redox potentiality , which is expressed the image hN2 . This index is like to the pH. Biological factors. dealings among the different organisms that live in the ecosystem, are different. Microorganisms in different communities incorporate power irons and feel plebeian influence. The relationship between organisms in these communities is multiplex and dynamic payable to constant changes in environmental conditions and variant of most microorganisms. The study of these interrelations is crucial to misgiving the cycle of study in nature, modify formation , organic evolution of species of prokaryotes .