This test can be used to differentiate Serratia and Proteus species which are gelatin positive from other members of Enterobacteriaceae family.This test differentiates pathogenic Staphylococcus aureus which is gelatinase-positive from non-pathogenic epidermidis which is gelatinase negative.This test is helpful in identifying and differentiating species of Serratia, Proteus, Bacillus, Clostridium, Pseudomonas and Flavobacterium.This test is used to determine the ability of an organism that produce gelatinases.On plates, no clear zones around colonies are observed. Negative: Complete solidification of the tube at 4☌.On plates, gelatin hydrolysis is indicated by clear zones around gelatinase-positive colonies. ![]()
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