Judul: Teknologi budidaya udang galah (Macrobrachium rosenbergii) dan ikan tambakan (Helostoma temmincki) intensif berbasis Integrated Multi Thropic Aquaculture dengan kepadatan berbeda
Abstrak: IMTA (Integrated Multi Thropic Aquaculture) is a aquaculture system that integrates several organisms and focuses on the trophic level differences of each organism. IMTA will be able to improve the quality of the water and of course have a direct impact on survival rate, stocking density and increase the growth rate. The research was using completely randomized design at many treatments in the form of initial stocking density difference between freshwater giant prawns and tambakan that UG20TM50 20 prawns/m2 and 50 tambakan/m2, UG20TM100 20 prawns/ m2 and 100 tambakan/ m2. Each treatment was repeated three times. The best treatment Based on 60 days cultivation was UG20TM50 with the survival rate of freshwater giant prawn (75.83±6.29%), spesific growth rate (3.02±0.16%), total production (3065.44±79.95g) and survival rate of tambakan (80±1.32%) spesific growth rate (2.94±0.25%) and total production (10723.47±975.21g), and supported by a temperature (28.90–31.67°C), pH (6.50– 7.87), DO (4.08–5.7 mg/L), ammonia (0.00010–0.0413) mg/L.
Keyword: Bogor Agricultural University (IPB), water quality., tambakan, IMTA, freshwater giant prawn

Judul: Teknologi Pembesaran Udang Galah (Macrobrachium Rosenbergii De Man) Sistem Terpadu Dengan Kepadatan Berbeda Berbasis Integrated Multi Trophic Aquaculture
Abstrak: Sistem IMTA (Integrated Multi Thropic Aquaculture) merupakan teknologi atau sistem budidaya yang dapat mengurangi dampak limbah dari suatu organisme dan menyeimbangkan kondisi lingkungan budidaya secara umum. Pada penelitian ini digunakan Rancangan Acak Lengkap dengan perbedaan padat tebar yaitu udang galah 13 ekor/m2 ikan tambakan 80 ekor/m2 (A) dan udang galah 13 ekor/m2 ikan tambakan 40 ekor/m2 (B). Perlakuan yang digunakan diulang tiga kali dengan masa pemeliharaan selama 60 hari. Perlakuan terbaik didapatkan pada perlakuan B ditandai dengan udang galah mendapatkan SR (85,33±1,88%), laju pertumbuhan harian (1,31±0,02%), hasil produksi (4736,03±248,20 gram), pada ikan tambakan didapatkan SR (79,23±6,05%), laju pertumbuhan harian (1,76±0,02%), hasil produksi (22166,96±1558,55 gram), serta dengan kualitas air yaitu DO (3,73-5,73) mg/L, pH (6,67-9,90), suhu (26,33-30,67) ºC, nitrit (0,04-0,11) mg/L dan amonia (0,017-0,235) mg/L.
Keyword: udang galah, IMTA, ikan tambakan, kualitas air

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
Keyword: