35113 Study Guide - Final Guide: Indole Test, Crystal Violet, Filter Paper
Document Summary
A lot of organisms (plate count agar) enumerate the total differential ingredients. will grow. bacteria that are present. A general plate for samples extracted from water, milk and food: yeast extract, glucose, casein, agar. It allows a true enumeration of the presence of bacteria. supress other organisms: yeast extract, proteose peptone, glucose, starch, magnesium growing. Selective agent is lauryl broths are used to enrich the growth of coliforms at 37o. Sulphate: tryptose, lactose, sodium lauryl sulphate, di-potassium hydrogen, potassium di hydrogen (sub-group of. Broth is usually salts and lactose and other subsequent from the enriched lt broth. Ec broths contain bile salts which favour faecal coliforms such as e. coli and inhibit organisms fermentation: tryptone, lactose, bile salts, nacl, di potassium phosphate enterobacterias that fermentate lactose. Inhibits the growth of other organisms. such as enterococci and other sporalated organisms. Enterobacteria the growth of most lactose and selective are. Lactose gram negative sodium sulphite and fermenting coliforms and inhibits.
