ANTIBIOTICS QUIZ

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

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

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

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

soybean meal, glucose, peptone, malt extract, ammonium chloride

soybean meal, glucose, peptone, malt extract, calcium carbonate

soybean meal, glucose, peptone, malt extract, sodium chloride

soybean meal, glucose, peptone, malt extract, ammonium sulphate

Phenyl acetic acid

Phenyl carbamic acid

Ammonium sulphate

Ammonium chloride

no aeration

continuous aeration

aeration which does not affect the yield

controlled aeration

solvent phase

aqueous phase

both (a) and (b)

precipitates

the precursors are often toxic to the cells

All of these

antibiotic yields are generally higher when cells enter the stationary phase

antibiotic yields are generally higher when cell growth slows

S. griseoflavus

S. aerofaciens

S. ramosus

S. griseus

Ammonia is liberated in the medium

Growth of mycelia occurs

All of these

Lactic acid present in the corn steep liquor is utilized at the maximum rate

6-7

7-8

5-6

8-9

precipitates

solvent phase

aqueous phase

both (a) and (b)