Insecticide Residues in Mushroom

Abstract

Mushroom samples were randomly collected from markets in Bangkok area. The investingation of insecticidal residues in mushroom was found that the abalone mushroom (Pleurotus Cystidious) and oyster mushroom (Pleurotus ostreatus) contained insecticidal carbamates carbaryl. Carbaryl was used as an insecticide to get rid of mites. Organochlorine residues such as α-BHC, heptachlor, epoxide and dieldrin were found in straw mushroom (Volvariella volvacea). These residues are originated from residues in rice straw which was the material used in the process of straw mushroom growing. Carbaryl and organochlorine residues in this investigation were not exceeded maximum levels for residues (MRL value) in agricultural products. However, at the present MRL value of carbaryl and organochlorine residues in mushroom have not been established.