Altertoxin I (Dihydroalterperylenol) is a quinone-type mycotoxin produced by Alternariaalternata fungi. It is mutagenic and cytotoxic and can weakly disrupt metabolic communication.
A mixture of (E)-octadecyl p-coumarate and (Z)-octadecyl p-coumarate has antifungal activity , it shows the dose dependent inhibition of the spore germination of Alternariaalternata and A. porri.