Judul: Pengaruh Jenis dan Konsentrasi Pati terhadap Karakteristik Tepung Nanas (Ananas Comocus (L) Merr) dan Pengaruh CMC Terhadap Karakteristik Velva Berbahan Dasar Tepung Nanas
Abstrak: Pineapple (Ananas comocus (L) Merr) was one kind of fruits in tropical and subtropical area, that contains vitamin C and fiber. Pineapple was a good material for making velva. In the present study, pineapple velva was produced from fresh pineapple puree and pineapple powder. The advantages of pineapple powder for making velva were it is shelf stable at room temperature, and it is simple in serving, packaging, and transportation. The purpose from this research were to evaluate the effect of type and concentration of starch as filler in making pineapple powder and the difference of velva prepared from fresh pineapple puree and that from pineapple powder. The study consist of three stage, i.e. preparation stage, First Experiment, and Second Experiment. The preparation stage consists of making velva from pineapple puree and the determination of objective quality of pineapple velva. The First Experiment consist of making pineapple powder with the addition of starch as filler (tapioca, maizena, and sago), and the selection the best formulae of pineapple powder. The Second Experiment consists of making velva from pineapple powder with the addition of CMC as stabilizer (0%, 0.25%, and 0.5%), organoleptic test, and the selection the best formulae of velva from pineapple powder. The result of pineapple velva objective quality in the preparation stage was used as standard for quality of velva in the later stage. Pineapple velva objective quality consist of viscosity, overrun, melting time, total solid, pH, and vitamin C content. The result show that the best formulae of pineapple powder was the one that used cornstarch with 15% concentration. The result of velva from pineapple powder showed that the viscosity, total solid, and melting time tend to increase with the increase of concentration of CMC, but the overrun, pH, and vitamin C content tend to decrease with the increase of concentration of CMC. The velva from pineapple powder objective quality and the organoleptic test showed that the best formulae is the velva from pineapple powder with the addition 0.25% concentration of CMC
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Judul: Pengaruh Jenis dan Konsentrasi Bahan Penstabil pada Velva Nenas (Ananas comosus (L) Merr)
Abstrak: Velva nenas (Ananas cornosus (L) Men) merupakan produk olahan dari puree buah nenas dengan campuran gula dan bahan penstabil yang dibekukan sehingga diperoleh produk dengan tekstur yang halus dan menyerupai es krim. Keunggulan dari velva fruit adalah kadar lemak yang rendah, kandungan vitamin C dan serat kasarnya yang tinggi serta harganya yang relatif lebih murah. Penelitian ini bertujuan untuk mempelajari pengaruh jenis dan konsentrasi bahan penstabil pada velva nenas, sehingga diharapkan dapat menghasilkan velva nenas yang disukai. Penelitian pendahuluan telah dilaksanakan untuk memperoleh kolnbinasi konsentrasi puree dan gula yang disukai dengan menggunakan uji organoleptik, untuk menguji kombinasi buah dan air yaitu 1:2, l:l, dan 2:1, dan konsentrasi gula yaitu 15%, 20%, dan 25%. Bahan penstabil yang digunakan pada penelitian pendahuluan adalah CMC 0.5%, sedangkan untuk penelitian utama menggunakan CMC dan alginat dengan konsentrasi 0.00%, 0.25%, 0.50%, 0.75%, dan 1.00%. Hasil dari penelitian pendahuluan menunjukkan bahwa semua koinbinasi yang diteliti sangat potensial dijadikan awal penelitian utaina. Pada penelitian utalna dilakukan pengamatan terhadap overrun, total asam tertitiasi, kadar air, dan uji organoleptik. Kombinasi konsentrasi pure dan gula tidak beipengaruh pada aroma, wama, dan tekstw tetapi berpengaruh sangat nyata @<0.01) terhadap rasa. Ole11 sebab itu pada penelitian utama digunakan produk yang paling disukai dari segi rasa tersebut, yaitu dengall kombinasi konsentrasi pure:air 1:2 dan gula 25%.
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Judul: Truncated Stop Loss as a Optimal Solution of Reinsurance Agreement in One-Period Model
Abstrak: Reinsurance is one of risk management efforts of an insurance company, which is called the cedent. Similar with insurance, reinsurance constitutes the cedent to pay the premium. We consider one-period reinsurance model and derive a rule which minimizes the ruin probability of the cedent for a fixed reinsurance premium. Therefore, it is needed to construct an optimal reinsurance agreement for the cedent. The premium is calculated according to four different principles, i.e. economic, generalized zero-utility, Esscher, and mean-variance principles. Stop loss is a reinsurance contract which protect the insurance company for losses that exceed a certain amount. The result of this research shows that a truncated stop loss is an optimal agreement in the class of all reinsurance contracts with various premiums calculated using above mentioned principles.
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