Experiment 1:

Plating techniques

Principles of the Procedure Nutrient Agar consists of peptone, beef extract, and agar. This relatively simple formulation provides   the nutrients necessary for the growth of a large number of microorganisms that are not excessively   fastidious. The beef extract contains water-soluble substances including carbohydrates, vitamins, organic nitrogen compounds, and salts.  Peptones are the principle sources of organic nitrogen,   particularly amino acids and long-chained peptides. Agar is the solidifying agent.
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Kaynak