The effect of adding ethanol extract of bidara leaves (Ziziphus Mauritiana) As a natural preservative of the kite fish (Decapterus Macarellus)

Abstract

Swallowfish (Decapterus imacarellus) is one type of marine fish with economic value that is in great demand by the community and market demand is greatly increasing. However, marine fish, one of which is kite fish, has a weakness, namely the rapid decline in quality or freshness. Bidara leaves contain alkaloids, flavonoids, phenols, tannins and saponins so that they can be used as natural preservatives for fish because of the activity of flavonoids and phenols found in bidara leaves can be used as antimicrobials and natural preservatives. The purpose of this study was to determine the effect of bidara leaf ethanol extract on the quality of kite fish freshness and the microbiology of swallowfish. This study used 2 methods, organoleptic results using empirical methods with ethanol extract concentrations of bidara leaves 0 ml, 5 ml, 10 ml and 15 ml, while bacterial tests used the TPC (Total Plate Count) method.