Why dipyridyl is added before chromoazurol-S during making of CAS plate?

13 April 2017 1 5K Report

Dipyridyl (2,2'-Bipyridine) is used as an ferrous Iron-chelating agent. ChromoazurolS is used for screening sderophore production.

Adam B Shapiro

Siderophore production is increased under low-iron conditions, so binding up the iron in the medium with dipyridyl should have this result.

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