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: Karakteristik lompatan hidrolik terhadap pelimpah terjunan pada saluran segi empat
Abstrak: Aliran dengan kecepatan tinggi dalam kondisi superkritis yang melintasi bangunan pelimpah, sebelum bergerak lebih jauh ke arah hilir saluran dimana bilangan Froude (F) lebih besar dari satu harus diubah menjadi aliran subkritis dimana bilangan Froudenya lebih kecil dari satu. Aliran yang meninggalkan kaki pelimpah merupakan aliran yang memiliki kandungan energi yang amat berarti sehingga dapat menimbulkan pengikisan yang besar. Pengubahan bilangan Froude dari kondisi superkritis ke subkritis dimaksudkan agar terjadi perubahan kandungan energi, sehingga aliran menjadi non erosive. Agar daya erosive aliran dapat berkurang, maka biasanya pada bagian hilir dari bangunan pelimpah dibuatkan suatu bangunan peredam energi. Erosi yang terjadi di hilir bangunan pelimpah dapat disebabkan dari keberadaan bangunan pelimpah itu sendiri, maupun bangunan peredam energi yang kurang tepat. Hal ini terutama menyangkut beberapa kejadian lompatan hidrolik yang timbul pada bangunan peredam energi tersebut.. Suatu metode yang efektif untuk menjamin bahwa lompatan hidrolik selalu terjadi pada daerah yang dilindungi, adalah dengan menggunakan bangunan peredam energi yang terdiri dari beberapa tipe dengan..dst
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