COMPARATIVE-STUDY ON THE ACTION OF S-(-CARVONE, IN-SITU, ON THE POTATO STORAGE FUNGI FUSARIUM-SOLANI VAR COERULEUM AND F-SULPHUREUM())

Growth of Fusarium sulphureum was inhibited by S-(+)-carvone administe red via the gas phase. Under the same conditions, the related fungus F . solani var. coeruleum was not inhibited. In liquid medium, both fung i were found to convert S-(+)-carvone with the same rate, mainly into isodihydrocarvone, isodihydrocarveol and neoisodihydrocarveol. Only a slight difference in the relative amounts of the bioconversion product s was observed. Since the bioconversion products did not inhibit the g rowth of the fungi to the same extent as S-(+)-carvone, the process ca n be considered as a detoxification mechanism. The bioconversion as su ch cannot account for the observed difference in growth inhibition.