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Antibiotics

Antibiotics
At normal pH, penicillin remains in

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

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Antibiotics
Media used for the production of chlorotetracyclin consists of

sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
corn steep liquor, CaCO3 and (NH4)2SO4
corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
sugar, CaCO3 and (NH4)2SO4

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Antibiotics
The yield of the antibiotic depends upon

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

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Antibiotics
Streptomycin is produced by

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

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Antibiotics
pH of the fermentation medium for chlorotetracyclins is

7-8
8-9
5-6
6-7

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Antibiotics
Fermentation medium for oxytetracyclin (terramycin) consist of

CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3
CSL, (NH4)2 SO4, sodium chloride and CaCO3
CSL,(NH4)2 SO4, ammonium chloride and CaCO3
CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3

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