Judul: Kondisi Oseanografi dan Kesesuaian Lokasi Pengembangan Budidaya Lobster di Teluk Lampung
Abstrak: Indonesia memiliki potensi budidaya laut yang tinggi, yang perlu dimanfaatkan dengan baik dan optimal. Salah satu komoditas budidaya laut yang memiliki potensi untuk dikembangkan adalah lobster (Panulirus spp), karena memiliki nilai ekonomis yang tinggi. Pengembangan budidaya lobster memerlukan pemilihan dan penataan lokasi budidaya yang berdasarkan daya dukung dengan memperhatikan kondisi oseanografi. Penelitian ini bertujuan untuk menentukan kesesuaian lokasi budidaya lobster berdasarkan parameter oseanografi di Teluk Lampung. Pengumpulan data oseanografi dilakukan di enam stasiun yang berbeda dan data tersebut dianalisis secara spasial dengan menggunakan perangkat lunak ArcGIS. Metode analisis melibatkan interpolasi dan klasifikasi spasial, serta overlay data pada semua parameter oseanografi untuk memberikan skor berdasarkan matriks kesesuaian. Hasil analisis ini menghasilkan peta spasial kesesuaian lokasi budidaya lobster. Berdasarkan peta kesesuaian tersebut, ditemukan bahwa luas area yang sangat sesuai untuk budidaya lobster sistem keramba jaring apung adalah sekitar 49.941,60 hektar, sementara area yang sesuai mencapai 109.051,46 hektar, sedangkan yang tidak sesuai mencapai 2.184,94 hektar., Indonesia has a high potential for marine aquaculture that needs to be utilized effectively and optimally. One of the marine aquaculture commodities with significant development potential is lobster (Panulirus spp), known for its high economic value. The cultivation of lobsters requires the careful selection and arrangement of cultivation locations based on their carrying capacity, taking into account oceanographic conditions. This study aims to determine the suitability of lobster farming sites based on oceanographic parameters in Lampung Bay. Oceanographic data collection was conducted at six different stations and the data was spatially analyzed using ArcGIS software. The analysis method involves spatial interpolation and classification, as well as overlaying data on all oceanographic parameters to give a score based on the suitability matrix. The results of this analysis produce a spatial map of the suitability of lobster farming locations. Based on the suitability map, it was found that the area that is very suitable for lobster cultivation of floating net cage systems is around 49,941.60 hectares, while the corresponding area reaches 109,051.46 hectares, while the unsuitable area reaches 2,184.94 hectares.
Keyword: Keramba jaring apung, Kesesuaian budidaya, Lobster, Oseanografi

Judul: Rantai Pasok Benih Bening Lobster untuk Pengembangan Budidaya Lobster di Provinsi Lampung
Abstrak: Pengembangan budidaya lobster di Indonesia memerlukan informasi ketersediaan benih secara kontinu. Penelitian ini bertujuan menganalisis mekanisme rantai pasok, efisiensi rantai pasok dan peluang risiko rantai pasok benih bening lobster di Provinsi Lampung. Penelitian dilakukan melalui wawancara dan pengisian kuisioner dengan metode snowball. Analisis data menggunakan margin pemasaran, farmer’s share, nilai tambah, dan metode failure mode and effect analysis (FMEA). Hasil penelitian menunjukkan bahwa telah terbentuk rantai pasok benih yang melibatkan nelayan, pengepul kecil, dan pengepul besar. Pola aliran yang mengalir pada rantai pasok yaitu aliran produk yang mengalir dari hulu ke hilir, aliran harga yang mengalir dari hilir ke hulu, dan aliran informasi yang mengalir ke dua arah. Rantai pasok pada kegiatan usaha benih bening lobster berlangsung secara efisien melalui perhitungan marjin permasaran dan farmer’s share serta menguntungkan para pelaku rantai pasok melalui perhitungan nilai tambah. Peluang risiko yang memberikan dampak tertinggi berdasarkan analisis metode FMEA adalah ketersediaan benih hasil tangkapan., The development of lobster culture in Indonesia requires information on the availability of puerulus. This research aims to analyze the mechanism, efficiency, and risk opportunities of the supply chain of puerulus in Lampung Province. The research was conducted through interviews and filling out questionnaires with the snowball method. Data analysis used marketing margin, added value, and failure mode and effect analysis (FMEA) method. The research result showed that the supply chain of puerulus involves fishers, small collectors, and large collectors. The flow pattern in the supply chain is the product flow that flows from upstream to downstream, the price flow that flows from downstream to upstream, and the flow of information that flows from two directions. The supply chain in puerulus business activities takes place efficiently through the calculation of marketing margins and farmer's share and benefits the supply chain actors through the added value. The risk opportunity that has the highest impact on the analysis of the FMEA method is the availability of caught seeds.
Keyword: FMEA, Lobster culture, Puerulus, Supply chain

Judul: Prenilasi Senyawa β-Diketon sebagai Prekursor 3-Prenilflavon
Abstrak: One group of flavonoids that has not been commonly synthesized is 3- prenylflavone. The main objective of this experiment was to synthesize precursor of 3-prenylflavone. Firstly, β-diketone was synthesized via 4 steps from phenol as starting compound with total yield of 24%. Prenylation of β-diketone with prenyl bromide and K2CO3 base produced 4 fractions which were separated by using preparative thin layer chromatography (PTLC) with n-hexane:EtOAc (8:2) as the eluent. Fraction with Rf = 0.80 was further separated by using preparative PTLC with n-hexane:EtOAc (99:1) as the eluent. Two fractions were obtained with Rf = 0.38 and 0.42. The first fraction has been characterized as diprenylated β-diketone with 49% yield. Application of protecting group on the phenolic OH group in β- diketone are needed to obtain monoprenylated β-diketone which can be further cyclized into 3-prenylflavone
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