nutrient agar is an example of general purpose medium.
nutrient agar is an example of general purpose medium.
nutrient agar is an example of what medium?
general purpose medium
nutrient agar









































nutrient agar is a general purpose medium supporting growth of a wide range of non-fastidious organisms. it typically contains (mass/volume):









































bullet::::- 0.5% peptone - this provides organic nitrogen









































bullet::::- 0.3% beef extract/yeast extract - the water-soluble content of these contribute vitamins, carbohydrates, nitrogen, and salts









































bullet::::- 1.5% agar - this gives the mixture solidity









































bullet::::- 0.5% sodium chloride - this gives the mixture proportions similar to those found in the cytoplasm of most organisms









































bullet::::- distilled water - water serves as a transport medium for the agar's various substances









































bullet::::- ph adjusted to neutral (6.8) at .
nutrient agar
casein nutrient agar









































casein nutrient agar (cn) is a growth medium used to culture isolates of lactic acid bacteria such as "streptococcus thermophilus" and "lactobacillus bulgaricus". it is composed of standard nutrient agar with the added ingredient of skim milk powder, which contains casein. lactic acid bacteria will precipitate casein out of the agar by lowering the ph. this will produce a cloudy appearance around the colonies that do this. this medium is not regarded as selective as it supports the growth of a wide variety of organisms.
casein nutrient agar