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All Journal Jurnal Bios Logos Koli Journal: English Language Education
Rori, Chindy Achika
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Other

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Aktivitas Enzim Ekstraseluler dari Bakteri Endofit Tumbuhan Mangrove Avicennia marina Rori, Chindy Achika; Kandou, Febby Ester Fany; Tangapo, Agustina Monalisa
JURNAL BIOS LOGOS Vol 10, No 2 (2020): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.11.2.2020.28338

Abstract

ABSTRAKBakteri endofit merupakan salah satu sumber penghasil senyawa ekstraseluler yaitu enzim. Enzim dari bakteri endofit lebih menguntungkan dan produksinya lebih cepat. Penelitian ini bertujuan untuk menganalisis kemampuan aktivitas enzim ekstraseluler dari bakteri endofit tumbuhan mangrove Avicennia marina. Metode penelitian yang digunakan yaitu eksploratif eksperimental, melakukan isolasi bakteri dari tumbuhan mangrove A. marina dan selanjutnya dilakukan uji potensi aktivitas enzim ekstraseluler dari isolat bakteri endofit. Hasil isolasi memperoleh tujuh isolat bakteri endofit dari tumbuhan A. marina, isolat endofit tersebut mampu menghasilkan aktivitas enzim ekstraseluler yaitu empat isolat menghasilkan enzim amilase, enam isolat menghasilkan protease, satu isolat menghasilkan selulase dan dua isolat menghasilkan gelatinase.Kata kunci: bakteri endofit; Avicennia marina; amilase; protease; selulase; gelatinase ABSTRACTEndophytic bacteria are one source that can produce extracellular compounds, namely enzymes. Enzymes from endophytic bacteria are more profitable and can produce faster. This study aims to analyze the ability of extracellular enzyme activity from endophytic bacteria in mangrove plants Avicennia marina. This research used experimental explorative method, isolating bacteria from mangrove plant A. marina and then testing the potential of enzyme extracellular activity from endophytic bacteria isolated. Isolating result obtained seven endophytic bacterial isolates from A. marina plants,this endophytic isolates are able to produce extracellular enzyme activity is four isolates can produced amylase enzyme, six isolated can produced protease, one isolated can produced cellulase and two isolated can produce gelatinase. Keywords: Endophytic bacteria; Avicennia marina; amylase, protease, cellulase, gelatinase
Development of Commercial Sterility Detection Method Based on Chromogenic Media Agar in UHT Coconut Cream Liquid Products Tangkau, Ester Ruth Youla; Rori, Chindy Achika; Kamto, Yoel William Prasetyo; Mangangantung, Brayen; Tangapo, Agustina Monalisa
JURNAL BIOS LOGOS Vol. 15 No. 3 (2025): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v15i3.64802

Abstract

Commercial sterility analysis is a crucial step in quality control of Ultra High Temperature (UHT) products such as coconut cream liquid products produced by PT Sasa Inti Minahasa Selatan, to ensure the safety and stability of shelf life. Stability incubation testing takes a long time, which is 7-14 days. Development of commercial sterility methods using Chromogenic Agar selective media is needed to cut the incubation time that is too long. Agar Chromogenic Media is tested for its ability to detect common contaminants in UHT coconut cream products, in particular thermophilic and mesophilic microorganisms that cause spoilage, with a short incubation time. UHT coconut cream samples are prepared by artificial and natural inoculation. Validation was carried out by comparing the results on standard media based on sensitivity, specificity and Time-to-result (TTR) parameters. The results showed a real difference between NA/TGEA media and chromogenic media so that the reading of bacterial colonies growing on chromogenic media was clearer and easier to read due to the change in color and short incubation time where the bacteria causing decay had grown on day 5 with a reading of results that took only 24 hours. Based on the validation that has been carried out, chromogenic selective media can accelerate product release time and improve quality control efficiency in the UHT coconut cream industry.
Co-Authors Brayen Mangangantung Febby Ester Fany Kandou Kamto, Yoel William Prasetyo Tangapo, Agustina Monalisa Tangkau, Ester Ruth Youla