Judul: Karakteristik dan Kandungan Nutrisi Sosis Daging Sapi dengan Penambahan Ekstrak Daun Jati (Tectona grandis)
Abstrak: Beef sausage is food product made by mixing of meat and allowed food additives. The objective of this study is to evaluate capability Teak Leaf (Tectona grandis) Extract’s as natural dying and preservative in sausage production. Analysis include pH value, water absorption, color, organoleptic and nutritional content. The addition of teak leaf extract did not affect the pH value and water absorption (DSA). Sausages without the addition of extract (control) has intensity brightness, the color yellow and HUE ° higher than the sausage with the addition of extract 1% (P <0.05). Highest intensity of the red color on the addition of 1% extract. Panelists assess the intensity of the red color on the addition of 1% extract more potent than the control sausage. But panelists preferred color compared to the control sausage sausage with the addition of 1% extract. The conclusion from this study is that the addition of teak leaf extract can increase the intensity of red sausage is generated but not able to improve the preference panel.
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Judul: Karakteristik Kimia dan Organoleptik Sosis Daging Sapi dengan Penambahan Salt Replacer di PT. Kemang Food Industries
Abstrak: Sausage is a processed meat product made by grinding, added with salt and spices and then wrapped in the casing to form a cylinder. But, the increased awareness of health led people tend to reduce the intake of salt from the diet because high salt consumption can trigger the onset of hypertension. Therefore, it is important to find a substance that can replace the function of salt in the producing of sausage. In this research the substance that is added is a salt replacer. The purpose of this research is to find out how high in concentrations of salt can be replaced with the addition of salt replacer but the sausage characteristics still can be accepted by consumers. The research stages consist of the determination formula sausage, making sausage, organoleptic tests, and quality analysis. The result of this research showed that used salt replacer could reduced moisture content, fat content, Nacl content, natrium content, and cooking loss of beef sausage. The quality analysis results show that beef sausage contains 164.39% (db) water, 4.06% (db) ash, 32.91% (db) protein, 61.93% (db) fat, 1.10% (db) carbohydrates, 8.42% NaCl, 0.41% natrium, and 4.79% cooking loss. The hedonic test showed that the most panelist accepted the beef sausage
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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