Prereduced, anaerobically sterilized (PRAS) media:
a. are produced, packaged, shipped, and stored under anaerobic conditions.
b. have a short shelf life of only 2 weeks.
c. enable the culture to be incubated in the regular incubator under aerobic conditions.
d. contain peroxides that enhance the growth of certain anaerobes.
A
Optimally, media for anaerobic culture should be pretreated to eliminate oxygen. Reduction of media in an anaerobic environment eliminates dissolved oxygen but has no effect on the perox-ides that may accumulate over time and inhibit growth. PRAS media are produced, packaged, shipped, and stored under anaerobic conditions.
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