INTRODUCTION

....\nbreak take substrates to usable molecules. pissing activity (aw) is the index of the \navail competency of wet for chemical substance reactions and microbic put forwardth. In general, for \n harvest-feast, bacteria study a higher(prenominal) aw than yeasts, and yeasts require a higher aw\nthan molds. \n3. pH: Microorganisms sire a minimum, optimal and maximum pH for jumpth. \nMicroorganisms can drive in a wide pH range. The variations in the pH values for \n harvest-time may be due to different strains of a species or different species in a genus, \nthe grammatical case of substrate, the acid or base utilise to adjust pH or some other factors. \n4. Oxidation-reduction (OR) potential: In microbic cultures, the simultaneous \noxidations and reductions argon the sources of energy for jail prison booth processes. Since \nenergy is needful by the cell to function normally, OR reactions and OR potentials \nare important. Strictly oxidative organisms grow tho in the mien of forgo \n atmospheric oxygen. Strictly anaerobic organisms survive except in the absence of \nfree oxygen. facultative anaerobes can grow with or without free oxygen. \n5. Inhibitory substances: Generally, inhibitors run into microorganisms by playacting on \nthe unscathed cell, cell breakwater or dispense membranes, by interfere with the genetic \n utensil of the cell or by spine to the essential nutrients. somewhat examples of \nare lysozymes, Avidin, enzyme inhibitors and so forth \n6. Temperature: It is one of the some important environmental factors that regulate \nthe growth of microorganisms. Temperature is related to the ability of an \norganism to grow and survive. It also has an offspring on the cell size, metabolic \nproducts such as pigments and toxins, nutritional requirements, enzymatic \nreactions and chemical composition of cells. distributively organism has a minimum,