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 168hr, 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.
