Judul: Studi konstruksi kelembagaan pengelolaan sea farming: kasus di pulau panggang kabupaten administrasi kepulauan seribu
Abstrak: Penerapan konsepsi sea farming di Pulau Panggang, Kabupaten Adminidtrasi Kepulauan Seribu, yang pengelolaannya bersifat limited entry dalam proses kontruksi kelembagaan. Penelitian ini bertujuan memberikan input dalam proses kontruksi Kelembagaan, berupa kajian kelembagaan existing dan kajian kelembagaan sea farming.
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Judul: Institutional and Transaction Cost Analysis of Sea Farming Management in Panggang Island, Administrative Regency of Kepulauan Seribu
Abstrak: Phenomenon of declining fishing production in some Indonesian waters area has raised fears of increasing scarcity of fish resources, therefore many implementative programs and efforts has been developed. One of these programs is sea farming. Sea farming is shallow waters marine resources use system based on mariculture. The main objective is to increase fish resources while sustaining fishing activity, mariculture and marine ecotourism. Sea farming is not exactly the same with mariculture. Mariculture and other economic activities based on marine resources are subsystem of the sea farming. The aim of this research are : 1) to identify the role of institutional in managing coastal resources in Panggang Island Administrative Regency of Kepulauan Seribu, 2) to analyze institutional management of sea farming, 3) to evaluate economic benefit and transaction cost of sea farming management, 4) to analyze sustainability of sea farming program. The data was analyzed by 7 methods: 1) Institutional Analysis and Development (IAD); 2) stakeholders analysis; 3) fisheries resources management conflict analysis; 4) income analysis; 5) transaction cost analysis; 6) cost effectiveness analysis; 7) program scenario evaluation analysis. Based on the identification of institutional role in management of sea farming and coastal resources, the stakeholders actors are subject (sea farming members and trader), players (government, National Parks of Kepulauan Seribu, and university-PKSPL IPB), spectator (village government), and actor (security). Economic benefit of sea farming group member is Rp 6,805,645/year. Transaction cost for institutional management is Rp 875,000/year and the effectivity of transaction is 0.13, which is considered cost effective. Evaluation of sustainable scenario showed that scenario B which is program can be continued with a significant improvement was selected. The improvement of sea farming program includes adaptif institutional development, improvement of group organization and management, in order to achieve sustainability of sea farming program.
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Judul: Penapisan Inhibitor Tirosinase pada Empat Spesies Famili Asteraceae Chrysantemum morifolium R, Gerbera jamesonii A, Dahlia rosea Cav, dan Tagetes erecta.
Abstrak: The research was conducted to screen the potency of tyrosinase inhibitor from 4 species of Asteraceae family. The screening was performed on the leaves and flowers of Chrysantemum morifolium R, Gerbera jamesonii A, Dahlia rosea Cav, and Tagetes erecta. The samples were dried and then extracted with nhexane, ethyl acetate, and methanol. The inhibition activity was tested by a microplate reader spectrophotometer in 492 nm. The ethyl acetate extract of D. rosea Cav flower was the most potent tyrosinase inhibitor (IC50 for monophenolase 18.42 μg/mL and for diphenolase 687.79 μg/mL) compared with the other Asteraceae species. The most active essential oils as inhibitor of tyrosinase was obtained from T. erecta flower (IC50 for monophenolase 1882.62 μg/mL and for diphenolase 1884.33 μg/mL). Positive control used was kojic acid with IC50 value of 11.02 μg/mL for monophenolase and 84.19 μg/mL for diphenolase. Fractionation of the extract by preparative thin layer chromatography with chloroform as mobile phase gave 12 fractions. The most active fraction had IC50 of 5.55 μg/mL for monophenolase and 109.96 μg/mL for diphenolase, and was identified as flavonoid.
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