[The disinfection of fish in the family Cyprinidae of Opisthorchis felineus Riv. metacercariae by the combined use of acetic acid and table salt].

The studies were aimed at optimizing the procedure for disinfection of carps from the larvae of a pathogen of opisthorchiasis. The effects of different concentrations of acetic acid solutions on the viability of encysted O. felineus metacercariae isolated from ide (Leuciscus idus L.) tissue, as well as on that of larvae located in the fish muscles were examined by consequently using the solutions of acetic acid and salt. Acetic acid solutions (3 and 6%) are minimally effective in suppressing the viability of encysted O. felineus metacercariae isolated from fish tissues, 6% acetic solution being approximately 6 times higher. Acetic acid pretreatment of fish led to the higher salt penetration rate into the muscles of fish when it was salted thereafter and accelerated the death of O. felineus metacercariae. To correct the way of salting the fish invaded by Opisthorchis metacercariae, 4-hour fish presoaking in 6% acetic acid solution is most promising, which promotes the acceleration of the death of metacercariae and exerts no noticeable effect on the marketable state and taste of fish.