Iman Rusmana
Department of Biology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University. Jl. Raya Darmaga, Bogor 16680, West Java. Indonesia

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Journal : Jurnal Pengolahan Hasil Perikanan Indonesia

PENAPISAN BAKTERIOSIN DARI BAKTERI ASAM LAKTAT ASAL BEKASAM ., Desniar; Rusmana, Iman; Suwanto, Antonius; Mubarik, Nisa Rachmania
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 14, No 2 (2011): Jurnal Pengolahan Hasil Perikanan Indonesia
Publisher : Departement of Aquatic Product Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.067 KB)

Abstract

Bacteriocin is proteinaceous compound that has bactericidal action against other microorganisms. Bacteriocin-producing lactic acid bacteria (LAB) is generally considered safe for human consumption and can be applied in food preservation. One source of indigenous LAB is from Indonesian fermented fish products, bekasam. This study aimed to obtain LAB isolates from bekasam that have high potential as  producer of bacteriocin. The steps were screening of bacteriocin compound and protein precipitation using ammonium sulfate with a concentration of 0-10% to 70-80%. Screening of bacteriocin compounds of 25 isolates LAB from bekasam showed that there were 11 isolates (44%) that have the potential as  producer of bacteriocin, in which the cell-free supernatant to pH 5 and or pH 6 produce inhibitory zones on the indicator bacteria Escherichia coli, Salmonella typhimurium ATCC 14028, Bacillus cereus, Staphylococcus aureus and Listeria monocytogenes. Then, the precipitation of proteins from the cell-free supernantant was done for the selected four isolates that have the potential as  producer of bacteriocin. The supernatant and  the precipitate from yield of protein precipitation in the selected four isolates showed that inhibition zone against the indicator bacteria E. coli, S. typhimurium ATCC 14 028, and L. monocytogenes with inhibition zone around 3.0 to 10.0 mm. Inhibition zones in the supernatant and the precipitate were indication that  active compound is organic acid and bacteriocin, respectively. The highest inhibition zone of the supernatant and the precipitate of the BP(3) and SK(5) isolates against L. monocytogenes and S. typhimurium, respectively.  The highest inhibition zone of the supernatant of the BP(20) and BI(3) isolates against S. typhimurium and  S. typhimurium and E. coli, respectively. While the highest inhibition zone of precipitate of the BP(20) and BI(3) isolates were same, that is against E. coli. Each with ammonium sulfate concentrations were different.Key words: Bacteriocin, lactic acid bacteria, bekasam
PENAPISAN BAKTERIOSIN DARI BAKTERI ASAM LAKTAT ASAL BEKASAM ., Desniar; Rusmana, Iman; Suwanto, Antonius; Mubarik, Nisa Rachmania
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 14, No 2 (2011): Jurnal Pengolahan Hasil Perikanan Indonesia
Publisher : Department of Aquatic Product Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.067 KB) | DOI: 10.17844/jphpi.v14i2.5321

Abstract

Bacteriocin is proteinaceous compound that has bactericidal action against other microorganisms. Bacteriocin-producing lactic acid bacteria (LAB) is generally considered safe for human consumption and can be applied in food preservation. One source of indigenous LAB is from Indonesian fermented fish products, bekasam. This study aimed to obtain LAB isolates from bekasam that have high potential as  producer of bacteriocin. The steps were screening of bacteriocin compound and protein precipitation using ammonium sulfate with a concentration of 0-10% to 70-80%. Screening of bacteriocin compounds of 25 isolates LAB from bekasam showed that there were 11 isolates (44%) that have the potential as  producer of bacteriocin, in which the cell-free supernatant to pH 5 and or pH 6 produce inhibitory zones on the indicator bacteria Escherichia coli, Salmonella typhimurium ATCC 14028, Bacillus cereus, Staphylococcus aureus and Listeria monocytogenes. Then, the precipitation of proteins from the cell-free supernantant was done for the selected four isolates that have the potential as  producer of bacteriocin. The supernatant and  the precipitate from yield of protein precipitation in the selected four isolates showed that inhibition zone against the indicator bacteria E. coli, S. typhimurium ATCC 14 028, and L. monocytogenes with inhibition zone around 3.0 to 10.0 mm. Inhibition zones in the supernatant and the precipitate were indication that  active compound is organic acid and bacteriocin, respectively. The highest inhibition zone of the supernatant and the precipitate of the BP(3) and SK(5) isolates against L. monocytogenes and S. typhimurium, respectively.  The highest inhibition zone of the supernatant of the BP(20) and BI(3) isolates against S. typhimurium and  S. typhimurium and E. coli, respectively. While the highest inhibition zone of precipitate of the BP(20) and BI(3) isolates were same, that is against E. coli. Each with ammonium sulfate concentrations were different.Key words: Bacteriocin, lactic acid bacteria, bekasam
Co-Authors , Lizawati , Sobir -, Rahman . Mahyarudin, . Achmad Dinoto Aliati Iswantari ALINA AKHADIYA ALINA AKHDIYA Amanda, Nisa Widya Ani Suryani ANIK KUSMIATUN ANIK KUSMIATUN ANJA MERYANDINI Antonius - Suwanto ANTONIUS SUWANTO ANTONIUS SUWANTO Ari Fina Bintarti, Ari Fina ARIS TRI WAHYUDI Baskoro S Wibowo, Baskoro S Cahyadi Irwan, Cahyadi Cahyadi, Alfan CECEP KUSMANA CECILIA ANNA SEUMAHU Daniel Djokosetiyanto DEDY DURYADI SOLIHIN Desniar - - Desniar -, Desniar Desniar . DIAH ISKANDRIATI DIAH ISKANDRIATI DONDIN SAJUTHI DONDIN SAJUTHI DWI NINGSIH SUSILOWATI Eddy Supriyono Fachriyan Hasmi Pasaribu Ferbiyanto, Andri Fredinan Yulianda HAPPY WIDIASTUTI Hefni Effendi I MADE ARTIKA I Made Samudra It Jamilah KATHARINA JESSICA KATHARINA JESSICA Khairul Syahputra, Khairul Komang Gede Wiryawan Kukuh Nirmala Kuntari, Wahyu Budi Lena Novita MIFTAHUDIN ., MIFTAHUDIN Munti Yuhana MUTTAQIN, MAFRIKHUL Niken T.M Pratiwi, Niken T.M NISA RACHMANIA MUBARIK Novita, Hessy PANJI, TRI - PRIHASTO SETYANTO Puspaningsih, Dewi Rahman Rahman RATNA SETYANINGSIH RATNANINGTYAS, SUSI Ridwan Affandi RIKA RAFFIUDIN Rina Hesti Utami ROEDHY POERWANTO Siti Nur Jannah SRI BUDIARTI SRI BUDIARTI SUSAN SOKA SUSAN SOKA T. Widiyanto Thenawidjaya, Maggy TRI EKO WAHYONO, TRI EKO Tri Handayani Kurniati Tri Muji Ermayanti Tri Puji Priyatno Tri Widiyanto UTUT WIDYASTUTI Wibowo, Risky Hadi Widiyati, Ani Yadi Suryadi Yohana A Dahliani, Yohana A YULIN LESTARI Yuni Puji Hastuti Yuni Puji Hastuti Yusli Wardiatno Yusup, Ciptadi Achmad