Phenolic lipidPhenolic lipids are a class of natural products composed of long aliphatic chains and phenolic rings. Phenolic lipids occur in plants, fungi and bacteria.Types Alkylcatechols Alkylphenols Alkylresorcinols Anacardic acidsBiological activityDue to their strong amphiphilic character, the phenolic lipids can incorporate into erythrocytes and liposomal membranes. The ability of these compounds to inhibit bacterial, fungal, protozoan and parasite growth seems to depend on their interaction with proteins and/or on their membrane-disturbing properties.Biological roleThe phenolic lipid synthesis by type III polyketide synthases is essential for cyst formation in Azotobacter vinelandii.