Judul: Sifat Fisik dan Palatabilitas Pasta Daging Kambing dengan Metode Kominusi dan Frekuensi Leaching yang Berbeda
Abstrak: Goat (Capra sp.) as one of small ruminant animal has been domesticated in some countries, including Indonesia. Mutton is less acceptable by consumer due to its goaty smell, even though -as a protein source- contain essential amino acids which are needed by human body. By that means, mutton process in limited ways and resulting limited products. Leaching technique and comminuting method (a method which is reducing meat particle size), are some of technique to reduce or eliminate goaty smell in mutton. The aim of the research was to study physical characteristic and palatability of mutton pasta processed by comminuting method and different leaching frequency. The research used Complete Randomized Design Factorial Pattern with three repetitions. The first factor (A) was comminuting method consist of ground meat and small cutting meat (1.5x1.5x1.5 cm3 in size). The second factor (B) was leaching frequency which had three levels frequency: 0, 3 and 6 times. Data was analyzed by Analysis of Variants continued to Least Significant Mean if the results gave different effect. Observed parameters were color, aroma, texture, taste and spread ability, was evaluated by hedonic test using 50 panelists inexperienced. Data analyzed by Kruskal-Wallis Test and if it gave different effect continued to Rank Mean Compared Test. The research’s results showed that interaction between comminuting method and leaching frequency gave significant different effect to emulsion stability of mutton pasta.
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Judul: Sifat fisik dan palatabilitas pasta daging kambing dengan metode kominusi dan frekuensi leaching yang berbeda
Abstrak: Kambing (Capra Sp) merupakan hewan ruminansia kecil yang telah dibudidayakan di beberapa negara di dunia termasuk di Indonesia. Sifat daging kambing yang mempunyai bau yang mencolok yaitu bau prengus menyebabkan di beberapa tempat daging kambing kurang disukai. Daging kambing merupakan sumber protein yang bermutu tinggi yang dapat memenuhi kebutuhan asam-asam amino esensial yang diperlukan oleh tubuh. Pengolahan daging kambing masih sangat terbatas karena bau khas (prengus). Salah satu cara untuk mengurangi atau menghilangkan bau prengus daging kambing adalah dengan teknik leaching yang dipadukan dengan metode kominusi (mengurangi ukuran partikel daging) sebelum daging diolah lebih lanjut. Penelitian ini bertujuan untuk mempelajari sifat fisik dan palatabilitas pasta daging kambing dengan metode kominusi dan frekuensi leaching yang berbeda pada proses pembuatannya.
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4