Judul: Pengembangan Produk Kopi dengan Penambahan Ekstrak Biji Mahoni (Swietenia mahagoni Jacq.) sebagai Alternatif Minuman Fungsional Diabetisi
Abstrak: Diabetes Mellitus (DM) is a metabolism disorder disease signed by increasing of blood glucose (hyperglicemia) caused by insulin secretion disorder and or increase of insulin resistance. The purpose of this study was to develop a coffee product containing mahogany seeds (Swetenia mahagoni Jacq.) with good sensory as a fungtional drink for diabetic. Coffee product with the addition of 100 mg mahogany seed extract/serving size or 0.7% was chosen product (P<0.05). The selected coffee has water solubility 97.38% and bulk density 0.4854g/mL. The selected coffee contained 2.80% moisture, 5.88% ash, 1.08% fat, 6.04% protein, 84.20% carbohydrate, 0.96% total dietary fiber, 7.48% caffeine, and toxicity values347.097 ppm. GCMS analysis showed that selected coffe was contained Dodecanoic acid, 1,2,3 esters - propanetriyl, Octanoic acid , 1,2,3 - propanetriyl ester, and Esther Dodecanoic acid, 1 - ( hydroxymethyl ) -1.2 - ethanediyl. Based on this study it can be concluded that coffee with the addition of mahogany seed extract can be used as an alternative functional drink for diabetic
Keyword: Bogor Agricultural University (IPB), toxicity., mahogany, extracts, coffee

Judul: Aktivitas Antioksidan Ekstrak Biji Mahoni (Swietenia mahagoni Jacq.) sebagai Kandidat Obat Antidiabetes
Abstrak: Diabetes mellitus (DM) is a progressive chronic degenerative disease with glucose, protein, and lipid metabolic dysfunction. DM is one of oxidative stress conditions that requiring additional exogenous antioxidants. Mahagony is potential for antioxidant which can be used as an antidiabetic medicine. The objective of this research is to compare antioxidant activity of several Swietenia mahagony seed extracts from different methods of extraction (reflux and maceration) and type of solvents (ethanol and water). Antioxidant activity of all extract were evaluated by DPPH method and quantified the IC50 values. The IC50 values of all extracts are 1.03 mg/ml, 1.87 mg/ml, 4.09 mg/ml, and 1.15 mg/ml, respectively to ethanol maceration extract (ME), water maceration extract (MA), ethanol reflux extract (RE), and water reflux extract (RA). The result showed that extract resulted from maceration method using ethanol has the highest antioxidant activity, compare to the others (MA, RE, and RA).
Keyword: Swietenia mahagoni Jacq, reflux, maceration, DPPH, antioxidant, Bogor Agricultural University (IPB)

Judul: Analisis Siklon Tropis Narelle 2013 Menggunakan Model WRF
Abstrak: Narelle is a tropical cyclone which started on January 8 and decayed on January 14 2013 and took place in the Southern Hindia Ocean near the Nusa Tenggara Timur to the west of Australian coasts. The objective of this research is to analyze the relationship of surface heat flux with a cyclones Narelle 2013. The strength of relationship between surface heat flux and Narelle cyclone parameter is evaluated using a correlation coefficient. WRF model is, then, utilized to generate meteorological parameters which are responsible in the formation of the cyclone at its earliest stage. The parameters include pressure, surface sensible heat flux, surface latent heat flux, wind speed and SST. The result shows that surface latent heat flux is related to SST in the formation of Narelle cyclone with correlation coefficient of 0.89 and surface sensible heat flux is related to the wind speed with a correlation coefficient of 0.88
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