RESIDUE LEVEL OF CHLORPROPHAM IN SOLANUM TUBEROSUM, BEFORE AND AFTER WASHING

Abstract

Potatoes can’t be stored in very low temperature conditions that it is way Chlorpropham has grown in popularity as a sprout suppressant for long term storage of potatoes. The residue level of Chlorpropham in Christian and Roclas potatoes varieties, before and after washing, was analyzed using LC/MS/MS. The samples were extracted in an easy 3 step method using ethyl acetate. 0.27 mg/kg Chlorpropham residue was found in Roclas and 0.23 mg/kg in Christian. There was a decrease in the Chlorpropham concentration in the whole potato by 30.43-37.04 %. There was no significant difference between the 2 potatoes varieties, Christian and Roclas, in the % in which Chlorpropham residue was reduce after washing. Results indicated that the washing operation significantly reduces the Chlorpropham residue level in potatoes.

Keywords

• chlorpropham, potato, washing, isopropyl(3-chlorophenyl)carbamate, liquid chromatography, mass spectrometry