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Six mushrooms, Lentinus sajor-caju, Lentinus sp, Panellus sp. Polyporus
grammocephalus, Polyporus cf floccipes and Pseudopiptoporus sp (Pleurotaceae and
Polyporaceae Family) were used to study antioxidant properties. Ethanolic extract of the
mushrooms showed scavengging ability on 1,1-diphenyl-2-picrylhydrazil (DPPH) radical. In the
thyociante method, there is no significant inhibition of lipid peroxidation activities between samples
and positive controls. Phytochemical identification on ethanolic extract of Pseudopiptoporus sp
showed that terpenes were the major component. This finding suggested that terpenes are
resposible for antioxidant activity.

Keywords: Antioxidant activity, DPPH, Pleurotaceae, Polycarpaceae, Thiocyanate method

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