Garuda - Garba Rujukan Digital

M. Fedi A. Sondita

Fakultas Perikanan dan Ilmu Kelautan Institut Pertanian Bogor Jl. Agatis, Kampus IPB Darmaga Bogor

Author-ID : 385054

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Engineering Environmental Science

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Ekstrasi Senyawa Antibakteri Dari Diatom Chaetoceros gracilis dengan Berbagai Metode Setyaningsih, Iriani; Hardjito, Linawati; Monintja, Daniel R.; Sondita, M. Fedi A.; Bintang, Maria; Lailati, Nispi; Panggabean, Lily
JURNAL BIOLOGI INDONESIA Vol 5, No 1 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

ABSTRACTExtraction of Antibacterial Compound from Diatom Chaetoceros gracilis WithDifferent Methods. Diatom is phytoplankton which is commonly found in off shore.Chaetoceros produce antibacterial which inhibit some bacteria. This research was donein 3 steps. At first, Chaetoceros gracilis was cultivated in temperate controlled roomwith lighting 24 hours. The culture was harvested on 14 days, then it was dried andweighted. The second step, biomass was disrupted by different method such as sonicator,glass beads, and undisrupting. Then the biomass was maserated, filtrated, and evaporated.The crude extracts were tested to pathogen bacterial. The third step, the extraction wasconducted using hexana (non polar solvent), ethyl acetate (semi polar solvent), andmethanol (polar solvent). The crude extracts were tested to the pathogenic bacteria.The result showed that the produce cell disruption antibacterial activity by sonicator.The biggest inhibition zone was obtained by hexana but produced lower yield.Key words: Chaetoceros gracilis, growth, extraction, disrupting, antibacteria

EKSTRASI SENYAWA ANTIBAKTERI DARI DIATOM CHAETOCEROS GRACILIS DENGAN BERBAGAI METODE Setyaningsih, Iriani; Hardjito, Linawati; Monintja, Daniel R.; Sondita, M. Fedi A.; Bintang, Maria; Lailati, Nispi; Panggabean, Lily
JURNAL BIOLOGI INDONESIA Vol 5, No 1 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i1.3203

ABSTRACTExtraction of Antibacterial Compound from Diatom Chaetoceros gracilis WithDifferent Methods. Diatom is phytoplankton which is commonly found in off shore.Chaetoceros produce antibacterial which inhibit some bacteria. This research was donein 3 steps. At first, Chaetoceros gracilis was cultivated in temperate controlled roomwith lighting 24 hours. The culture was harvested on 14 days, then it was dried andweighted. The second step, biomass was disrupted by different method such as sonicator,glass beads, and undisrupting. Then the biomass was maserated, filtrated, and evaporated.The crude extracts were tested to pathogen bacterial. The third step, the extraction wasconducted using hexana (non polar solvent), ethyl acetate (semi polar solvent), andmethanol (polar solvent). The crude extracts were tested to the pathogenic bacteria.The result showed that the produce cell disruption antibacterial activity by sonicator.The biggest inhibition zone was obtained by hexana but produced lower yield.Key words: Chaetoceros gracilis, growth, extraction, disrupting, antibacteria

DEVELOPING A FUNCTIONAL DEFINITION OF SMALL-SCALE FISHERIES IN SUPPORT OF MARINE CAPTURE FISHERIES MANAGEMENT IN INDONESIA Halim, Abdul; Wiryawan, Budy; Loneragan, Neil R.; Hordyk, Adrian; Sondita, M. Fedi A.; White, Alan T.; Koeshendrajana, Sonny; Ruchimat, Toni; Pomeroy, Robert S.; Yuni, Christiana
JFMR (Journal of Fisheries and Marine Research) Vol. 4 No. 2 (2020): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.02.9

Small-scale capture ï¬sheries have a very important place globally, but unfortunately are still mostly unregulated. Typically, they are deï¬ned based on capture ï¬sheries characteristics, technical attributes of ï¬shing vessels, and socio-economic attributes of ï¬shers. Indonesia uses the term â€˜small-scale ï¬sherâ€™ (nelayan kecil), currently deï¬ned to include ï¬shing boats of â‰¤ 10 gross tons (GT), which previously covered only boats of â‰¤ 5 GT. Because small-scale ï¬shers are by law granted a privilege by government to be exempted from ï¬sheries management measures (e.g. ï¬sheries licensing system), its current deï¬nition jeopardizes ï¬sheries sustainability and signiï¬cantly increases the size of unregulated and unreported ï¬sheries. It is also unfair, as it legitimizes the payment of government support to relatively well-oï¬€ ï¬shers. This paper aims to develop a functional deï¬nition of small-scale ï¬sheries (perikanan skala kecil) to guide policy implementation to improve capture ï¬sheries management in Indonesia. A deï¬nition of small-scale ï¬sheries is proposed as a ï¬sheries operation, managed at the household level, ï¬shing with or without a ï¬shing boat of < 5 GT, and using ï¬shing gear that is operated by manpower alone. This deï¬nition combines attributes of the ï¬shing vessel (GT), the ï¬shing gear (mechanization), and the unit of business decision making (household) to minimize unregulated and unreported ï¬shing and focus government aid on people who are truly poor and vulnerable to social and economic shocks. The terms small-scale ï¬sheries and small-scale ï¬shers must be legally diï¬€erentiated as the former relates to ï¬sheries management and the latter relates to empowerment of marginalized ï¬shers.

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