Microcapsule Application of Kecombrang Flower Extract: Effects of Concentration, Types of Fraction, PH of Medium, and NaCl on Microbiological Properties of Minced Beef

Abstract

. Kecombrang (Nicolaia speciosa Horan), in addition to flavor and medicinal uses, it has potential as antimicrobial substances. The bioactive components in kecombrang are alkaloids, flavonoids, polyphenols, steroids, saponin and atsiri oils. This research was aimed to study the effectiveness of microcapsule from flower extract of kecombrang added to minced beef; the effects of pH interaction and NaCl addition on antimicrobial activity. The research used a Randomized Completely Block Design factorial pattern with 24 treatment combinations and 2 replications. The tested factors were type and microcapsule concentration ( control, ethanol extract 5%, etanol extract 10%, ethyl acetate extract 5% and ethyl acetate extract 10%), pH medium (pH 4 dan pH 7), and NaCl concentration (0% 2,5% and 5%). The results showed the microcapsule of flower extract of kecombrang that have antimicrobial activities in boiled minced beef was etyl acetate extract of 10% concentration under pH 4 and 5% NaCl