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: Kualitas media budidaya dan produksi udang galah (Macrobrachium rosenbergii) yang dipelihara pada sistem IMTA (Integrated Multi Trophic Aquaculture) dengan kepadatan berbeda
Abstrak: Improving water quality and stocking densities are expected to increase freshwater giant prawn production. By using IMTA system is aimed to improve water quality which can increase survival rate, stocking densities, growth rate, and economically profitable. This research was carried out with complete random design with 3 treatments. The treatments were (A) 10 prawn/m2, (B) 20 prawn/m2, (C) 30 prawn/m2 of stocking densities, each treatments had 3 replication. Water flow was integrated with freshwater giant prawn cultivation and biofilter systems. Cultivation of freshwater giant prawn during 72 days in IMTA system had better treatment at 10 prawn/m2 densities. That treatment had temperature (25 – 31.3°C), pH (6.6 – 8.0), dissolved oxygen (3.0 – 5.7 mg/L), nitrate (0.081 – 0.338 mg/L), phosphate (0.152 – 0.338 mg/L) which still good for cultivation, the low of amonia (0.0002 – 0.0593 mg/L) and nitrite (0.007 – 0.109 mg/L), and also has the best survival rate, growth rate, final body weight, and economic return
Keyword: 

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: