
doi: 10.1038/167773a0
pmid: 14833400
DURING a recent morphological study of Penicillium herquei, we became interested in the curious change in pigmentation induced by variation of the substrate, a phenomenon which had been reported by Bainier and Sartory1 when the fungus was described in 1912. These workers observed that a yellow pigment was formed on potato, banana, carrot and Raulin's medium; on a medium rich in peptone the pigment was a beautiful blue. Apparently no attempt was made at chemical characterization.
Biological Products, Penicillium
Biological Products, Penicillium
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