Judul: Pemanfaatan Tepung Sukun (Artocarpus Altilis Sp.) pada Aneka Kudapan sebagai Alternatif Makanan Bergizi Program PMT-AS
Abstrak: The aim of this research was to utilize breadfruit flour in production of nutritious snack foods for School Supplementary Feeding (PMT-AS) programme. There were three products developed in this study, is brownies, pia, and croquette. The research was conducted using experimental design. The proportions of breadfruit flour and wheat flour were different for each product, which brownies was formulated using 70:30, 80:20, 90:10, and 100:0; whereas bakpia and croquette was formulated by 50:50, 60:40, 70:30, and 80:20. According to organoleptic test, selected products were brownies with 90% breadfruit flour, pia with 60% breadfruit flour, and croqquette with 60% breadfruit flour. Proximate analysis showed that 100 grams brownies contained 409 Kcal energy and 7,5 grams protein, 100 grams pia had 383 Kcal energy and 6,7 grams protein and croquette had the highest energy and protein content is 455 Kcal and 9,9 grams protein. In conclusion, all products are suitable as alternative snacks for PMT-AS programme. The products have fulfilled 300 Kal energy and 5 grams protein per serving size. Considered also the cost of production, these products have fufilled criteria to be used in PMT-AS programme
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Judul: Optimasi Formula Produk Ekstrusi Snack Makaroni dari Tepung Sukun (Artocarpus altilis) dengan Metode Desain Campuran (Mixture Design)
Abstrak: Breadfruit (Artocarpus altilis) is a plant of high carbohydrate (27.12%) with high water content (60-80%), so that makes it easy to be spoiled and damaged. To increase the shelf life and economic value of breadfruit, breadfruit should be processed into flour. Breadfruit flour can be used to substitute wheat flour 25-75%. However, the use of breadfruit flour is still low, especially in the form of extruded products. Increased consumption of modern snacks such as macaroni is challenging. The objective of this study is to find an optimum formula of snack macaroni with breadfruit flour substitution. The method used in the optimization of the formula was mixture design method. Design Expert (DX) 7.0 ® software was used as a tool in the optimization. Macaroni breadfruit formulas has been made then measured on the physical properties including expansion, colour, texture, density, and hedonic rating test (colour, aroma, texture, taste, and overall). The result of the optimum formula is the mixture of 45%(b/b) breadfruit flour, 40%(b/b) tapioca flour,and 15%(b/b) wheat flour. The formula had expand of 3.06 mm. The sensory scores obtained for the formula are 4.77 for colour, 5.07 for aroma, 5.59 for texture, 4.79 for taste, and 4.99 for overall (scale 1-7). The colour of the formula is yellow with ˚Hue of 79.94˚ (L=43.58, a=5.51, b=30.95). The formula has texture with texture analyzer value of 2034.86 gf, raw snacks densityof 0.93 g/ml and fried snack density of 0.27 g/ml. The best formula that has been verificated then will characterization with chemical test (proximate analysis).
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Judul: Persamaan Korteweg-de Vries Orde Tinggi untuk Menggambarkan Gerak Gelombang Internal
Abstrak: The ocean can be considered of layers of fluid that each layer has a constant density. Internal waves are waves occur in the interface of every'two layers with different density. Because it occures underneath the surface of the ocean, it is invisible. One of internal waves is internal solitary waves. One of formulation that can describe intemal waves movement is KdV equation. KdV equation is derived from governing equations of ideal fluid in Lagrange formulation using asymptotic method. On this thesis, KdV equation is derived in higher order and then its solution is derived by using internal solitary waves assumption. An example of a two-layer fluid is a case will be used. By using Mathematica6 software, for this case will be obtained the coefficients in lower and higher order explicitly and the corresponding between coefficients and relative lower layer depths and fluid depths, the corresponding between coefficients and relative densities, and also observed the different between solitary waves in lower and higher order.
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