Judul: Produksi Pati Ganyong (Canna edulis Kerr) Resisten Tipe IV melalui Modifikasi Asetilasi
Abstrak: Edible canna is a potential forest product that can be used as food diversification. The objective of this research was to obtain resistant starch which has been proven for its physiological effect. The production of resistant starch was done by chemically modified which used different concentration of acetic anhydride, namely 3, 4, and 5% in 300 g of edible canna. Two types of edible canna used in this research are red edible canna and white edible canna. The degree of substitution which gained through acetylation is 0.082, 0.168, 0.257 for red edible canna and 0.082, 0.168, 0.257 for white edible canna. Through proximate analysis, modification of edible canna starch resulted in increase of water content and decrease of ash content, while protein content, lipid and carbohydrate content showed no relatively difference. Total starch content, amylose, amylopectin, dietary fiber, resistant starch and digestibility of starch were measured for edible canna and the selected modified edible canna (4%). The results showed that modification through acetylation can increase resistant starch content. It increased 3.54% in red edible canna while for white edible canna is 3.80%. These results influenced the increasing of total dietary fiber with value 2.45% for red edible canna and 1.95% for white edible canna. The increasing of dietary fiber will result in the decreasing of digestibility of starch with value 1.58% for red edible canna and 1.98% for white edible canna.
Keyword: starch modification, resistant starch type IV, digestibility, Canna edulis

Judul: Optimasi Pembuatan Pati Resisten Tipe III dari Pati Singkong Gen (Manihot esculenta Crantz)
Abstrak: One of products of cassava starch modification is resistant starch. Resistant starch has several benefits which of play a role in the metabolism of fat and cholesterol, binding toxins, bile acids, preventing colon cancer, coronary heart disease and diabetes type II. The purpose of this research is to optimization of making starch cassava (Manhot esculenta Crantz) with autoclaving-cooling method and debranching with pululanase enzyme method to produce resistant starch type III. Extract cassava starch has a moisture content of 9.58% with yield of 17.44%. The yield of starch modification by using a drying oven. Based on this study, modification of cassava starch with autoclaving-cooling method obtained the highest resistant starch content by debranching method was 87.64% at a concentration 1.04 U/g. In this study showed that the best resistnt starch content, modification of starch was using debrancing with pululanase enzyme method.
Keyword: Bogor Agricultural University (IPB), resistant starch, debrancing, cassava starch, Autoclaving-cooling

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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