The Effectiveness Inhibition Filtrate BacteriocinsLactobacillus Acidophilus Toward Contaminants Bacteria from Swordfish (Auxis rochei) Stew

Abstract

This research was conducted to know the effectiveness of filtrate bacteriocin Lactobacillus acidophilusaccording to concentrations toward zone of growth inhibition contaminant bacteria from swordfish(Auxis rochei)stew. This research was an experimentally research conducted in laboratory of Food Chemical Research Center of LIPI Bandung used completely randomized design with two replications. Species of contaminant bacteria used wereBacillus sp. (RR2) (Da, Te, Amp, Sxt), Staphylococcus aureus(R4) and Staphylococcus aureus (R5) (Da) witha range of concentration the filtrate bacteriocin culture L.acidophilus50, 60, 70, 80, 90 and 100%. The parameters were diameter (mm) of the zones of bacterial growth inhibition.The Results showed that treatment with filtrate of bacteriocin concentration 50 to 100% effective can inhibition the growth of bacterial contaminants. This treatment privide that the filtrate bacteriocin of culture L.acidophilus can be used as bio-preservativein the swordfish stew.

Aktivitas Antioksidan Dan Antibakteri Sedian Edible Kompleks Kitosan-Ekstrak Buah Mangrove Sonneratia alba

“…Bahan lain yang juga digunakan untuk mengawetkan produk perikanan yaitu bakteri asam laktat yang menghasilkan bakteorisin yang efektif sebagai pengawet (Sulistijowati et al, 2015) namun hal ini terbatas karena sifat antibakterinya hanya aktif dalam keadaan asam sehinnga dapat digunakan mangrove yang dapat bersifat sebagai sumber antioksidan dan antibakteri alami. Metabolit sekunder yang didapatkan antara lain fenolat, triterpenoid, flavonoid, saponin, tannin, alkaloid, stetoid yang memiliki aktivitas senyawa bioaktif yang umumnya sebagai antioksidan dan antibakteri.…”