Antibiotics
Which of the following precursor is added in the medium to get penicillin G?

Phenyl carbamic acid
Ammonium chloride
Ammonium sulphate
Phenyl acetic acid

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Antibiotics
Media composition for the production of streptomycin is

soybean meal, glucose, peptone, malt extract, ammonium sulphate
soybean meal, glucose, peptone, malt extract, ammonium chloride
soybean meal, glucose, peptone, malt extract, sodium chloride
soybean meal, glucose, peptone, malt extract, calcium carbonate

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