Judul: Pemberian Minuman Kopi dengan Penambahan Ekstrak Biji Mahoni (Swietenia mahagoni Jacq.) pada Tikus Wistar yang Diinduksi Aloksan
Abstrak: Degenerative disease such as diabetics requires safe and long-term medical treatments. The aim of this study was to measure blood glucose and liver glycogen status of 15 alloxan-induced Wistar rats which allocated into three groups, namely: (1) mahagony coffee group which had an intervention of coffee beverage with addition of mahogany seed extract, (2) coffee group which had an intervention of coffee beverage without addition of mahogany seed extract, and (3) control group which had no intervention of any coffee beverage. After 21 days of intervention, blood glucose level of control group changed positively, whereas blood glucose level of coffee group and mahagony coffee group changed otherwise. The intervention had an significant difference (p<0.05) to blood glucose level of rats. Blood glucose level of control group was significant difference (p<0.05) with coffee group and mahagony coffee group Nonetheless, blood glucose level between coffee group and mahagony coffee group was no significant difference (p>0.05). Moreover, the 21 days of intervention was given no significant difference (p>0.05) to liver glycogen level.
Keyword: Bogor Agricultural University (IPB), liver glicogen level, blood glucose level, mahogany seed extract, coffee

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: Instrumen elektronik berbasis akustik sebagai alat ukur pasang surut air laut
Abstrak: Pengukuran pasang-surut sangat diperlukan sehubungan dengan pemanfaatan data yang diperoleh oleh berbagai bidang ilmu, misalnya oseanografi, geologi, perikanan, clan lain-lain. Dengan memanfaatkan time delay dalam pengukuran jarak target dalam sistem akustik maka dirakitlah peranti elektronik kecil yang dapat mengukur jarak target dimana permukaan air sebagai obyeknya. Metode yang dipakai dalam penelitian ini meliputi beberapa tahap, yaitu tahap perakitan lEP, tahap uji coba di laboratorium clan tahap uji coba di lapang. Pada tahap perakitan lEP dilakukan pengumpulan komponen yang dilanjutkan dengan penyolderan pada Printed Circuit Bord. Pada tahap uji coba di laboratorium dilakukan simulasi pasut pada sebuah bak air berukuran 2 x 2 meter. Tahap yang terakhir adalah pengujian lEP pada keadaan yang sebenarnya dimana permukaan air laut dijadikan sebagai target yang diukur jaraknya ternadap lEP. Melalui hasil uji coba Instrumen Elektronik Pasut (lEP) di laboratorium, diperoleh data bahwa instrumen ini memiliki kisaran deviasi antara 0.40 sampai 0.54. Untuk uji coba di lapang diketahui melalui analisis error yang dilakukan bahwa 1EP memiliki sudut kemiringan garis regresi mendekati 45 derajat yaitu sebesar 45.98 derajat
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