Effect of Furyl Furamide on the Keeping Quality and Bacterial Contamination of Horse Mackerel during Transport under Ice-Chilled Condition

Abstract

Bacteriological survey was conducted 3 times during July and August in 1967, with respect to the contamination of sea water in Nagasaki Port and the sea waters in the holds of fishing boats. To one of the fish hold in each boat was added furyl furamide (FF) for keeping the quality of fishcatch and the others being non-treated control.In addition, the skins and muscles of horse mackerel samples which had been either treated or non-treated with FF were examined, and the tests were done before and after transport from Nagasaki to Tokyo by rail of rapid service under chilled condition.Results obtained may be summarized as follows:1. The sea water in Nagasaki Port being employed for landing such fishcatch as horse mackerel and common mackerel was found to be highly contaminated showing high plate counts and coliform numbers. Moreover, it was noted that Vibrio parahaemolyticus, one of the most important causative organisms of food poisoning in Japan could be detected throughout the present survey.2. Fairly high bacterial numbers were recorded in the sea water of the control fish holds, while addition of FF at 5ppm to the holds resulted in marked decreases in the number of indicator organisms, and almost no V. parahaemolyticus was detected in the sea water of FF treated fish holds.3. No V. parahaemolyticus was detected in the fish samples when tested immediately after being landed at Nagasaki, whereas the presence of this organism was confirmed in the control samples of the first experiment. Interestingly, almost no Vibrio was detected in the samples which had been treated with FF.