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Antibiotics

Antibiotics
At normal pH, penicillin remains in

both (a) and (b)
precipitates
solvent phase
aqueous phase

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Antibiotics
Penicillin is recovered after fermentation as

potassium penicillin
calcium penicillin
penicillin only
sodium penicillin

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Antibiotics
Streptomycin is produced by

S. griseus
S. ramosus
S. aerofaciens
S. griseoflavus

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Antibiotics
At acidic pH, penicillin remains in

both (a) and (b)
solvent phase
aqueous phase
precipitates

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Antibiotics
Vegetable oil, (corn oil or soybean oil) added in the fermentation medium for penicillin, act as

antifoam agent
both (a) and (c)
source of nutrients
carbon source

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Antibiotics
The yield of the antibiotic depends upon

all of these
age of the inoculum
pH of the medium
composition of the medium

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