effect of potassium permanganate and sodium dichloroisocyanurate on metacercariae of fasciola gigantica

ABSTRACT

Batches of encysted metacercariae of F. Gigantica adhered to transparent polyethylene sheets were treated with KMnO4, while others were treated with NaDCC at specific concentrations and exposure times. An assessment of their effects was carried out by the detached percentage and viable metacercariae and scanning electron microscope [SEM] ultrastructural changes. In addition, their effects on the leaves of green vegetables were reported. The results showed that all metacercariae were detached and died due to their exposure to KMnO4 [96%] and NaDCC [100%] were detached from the polyethylene sheets. SEM showed that the deformities in the metacercariae soaked in NaDCC were more severe than those dipped in KMnO4. However, neither KMnO4 nor NaDCC affected the consistency, color taste or flavor of the vegetable leaves. The two disinfectants, particularly NaDCC, proved to be safe, effective against the encysted metacercariae with no side effects