influencing the biological physical & chemical processes and of microbes, microbial activity and population in soil. Though microorganisms can tolerate extreme temperature (such as - 60 ° or + 60 u) conditions, but the optimum temperature range at which soil microorganisms can grow and function actively is rather narrow. Depending upon the temperature range at which microorganisms can grow and function, are divided into three groups i.e. psychrophiles (growing at low temperature below 10 °C) Mesophiles (growing well in the temp range of 20 ° C to 45° C) and thermopiles (can tolerate temperature above 45° C and optimum 45-60°C). Most of the soil microorganisms are mesophilic (25 to 40 °) and optimum temperature for most mesophiles is 37° C. True psychrophiles are almost absent in soil, and thermopiles though present in soil behaves like mesophiles. True thermopiles are more abundant in decaying manure and compost heaps where high temperature prevails.
ogy is the difficulty of getting phages to kill control. Further steps may also include devel- mesophilic and psychrotrophic microorgan- opment of multistrain phage cocktails with isms in a food product stored at refrigeration complementary activity aimed at different temperatures. Phage activity requires actively cell structure targets. In addition, little infor- growing and dividing hosts, which for many mation is available on lactic acid bacteria mesophiles generally does not occur in a spoilage control with phage. This bacterial chilled stored product. Although psychotro- group contains common spoilers of vacuum- phs can grow at chill temperatures, their packaged products. Most current research growth rate is slow. For phage to be effective focuses on Pseudomonas spp. and B. against spoilers their activity must be certain thermosphacta. at low storage temperatures.
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