Stability of Triflumizole and Its Metabolites in Extracts from Crops

Abstract

The storage stability of triflumizole and its metabolite, FM-6-1, in the final solutions of cleaned sweet pepper and lily scale was studied in dark and light conditions. Triflumizole and FM-6-1 rapidly decreased with storage time in the final acetonitrile solution of sweet pepper.After 168 hr, triflumizole and FM-6-1 decreased to 3. 7% and 33. 9%, respectively. The decrease was more remarkable during the storage at 30°C than at 5°C, and in the light than in the dark. In the lily-scale solution, triflumizole and FM-6-1 did not degrade even at 30°C in the laboratory light. The difference of triflumizole and FM-6-1 in stability in the solutions of sweet pepper and lily scale may be attributed to the content of chlorophyll extracted from these crops. Triflumizole and FM-6-1 also decreased with time in an acetonitrile solution containing chlorophyll in the light, and degraded almost 1-to 2-fold faster than in the sweet-pepper solution.In both sweet-pepper solution and chlorophyll solution, new compounds appeared as triflumizole and FM-6-1 decreased and increased with storage time. The results indicated that the stability of triflumizole and FM-6-1 in the final acetonitrile solution of sweet pepper was affected by chlorophyll present in the solution, storage temperature and light.

Storage stability of organophosphorus pesticide residues in peanut and soya bean extracted solutions

“…The selected pesticides were more stable in wheat extract than in orange and cabbage extracts. Kobayashi et al [ 16 ] investigated the stability of triflumizole and its metabolic product FM-6-1 in chilli and lily extracts. It was observed that the stability was related to chlorophyll content, temperature and light.…”