Judul: Pengaruh Penambahan Berbagai Jenis Pati dan Tepung terhadap Mutu Batter yang Diaplikasikan pada Tempe yang Digoreng dengan Metode Deep Frying.
Abstrak: Batters are used to improve fried battered product quality. The objectives of this research are to study the rheological properties of batter with different flours and starches addition (sagoo, rice flour, dextrine, tapioca and potato starch) into batter formulation and to study the effects of different flours and starches addition for battered tempeh quality included coating pick-up, cooking yield, texture, color, moisture content, oil content and panelist preferences. Addition of rice flour and tapioca into batter formulation, can increase the viscosity of the batter. Coating pick-up and cooking yield tend to increase with the increment of the viscosity, so it can control the movement of cooking oils into food product and prevent the water evaporation. Coating pick-up of the batters with different flours and starches addition ranged from 1-2 %, and cooking yield of the batters ranged from 22.74-42.85%. The batters with good barrier ability are showed with low oil content of the products, for example battered tempeh with rice flour addition has the lowest oil content between others, it has 14.49% oil content of the product that fried for 15 minutes. Over all, included texture, color, aroma and taste, battered tempeh with potato starch addition is the most preferred by panelists because it has the highest rating hedonic scale.
Keyword: batters, rheology of batters, coating pick-up, cooking yield, moisture content, oil content, texture, color, panelist preferences

Judul: Pengaruh jenis Kedelai, Natrium Metabisulfit, dan Asam Askorbat terhadap karakteristik Fisikokimia, Fungsional, dan Organoleptik Tepung Tempe
Abstrak: Pengolahan lanjut tempe menjadi tepung bertujuan memperpanjang umur simpannya. Permasalahan browning dan belum adanya standar nasional tepung tempe menjadi perhatian dalam penelitian ini. Penelitian ini bertujuan untuk mengevaluasi metode pembuatan tepung tempe, serta memeriksa sifat fisikokimia, fungsional, dan organoleptik tepung tempe berdasarkan interaksi jenis kedelai dan zat anti pencoklatan yang digunakan. Jenis kedelai yang digunakan adalah kedelai asal Grobogan dan kedelai pangan rekayasa genetik (PRG), sedangkan zat anti pencoklatan berupa natrium metabisulfit dan asam askorbat. Hasil penelitian menunjukkan bahwa tepung tempe paling baik dibuat pada suhu pengeringan 70oC dengan blansir selama lima menit pada konsentrasi zat anti pencoklatan sebesar 0.1 %. Interaksi perlakuan berpengaruh nyata (p<0.01) terhadap redness, pH, kadar protein, dan warna organoleptik, namun tidak berpengaruh nyata (p>0.01) terhadap derajat putih, kecerahan, yellowness, aw, kadar air, abu, lemak, karbohidrat, indeks penyerapan dan kelarutan air, aktivitas emulsi, kapasitas gelasi, serta aroma dan rasa organoleptik tepung tempe., Further processing of tempe becomes flour aims to extend its shelf life. The browning problem and the absence of tempe flour national standard may be concern in this study. The objective of this research was to evaluate the method of tempe flour making, and also asses physicochemical, functional, and organoleptic properties according to the interaction between soybean varieties and anti browning agents used. The soybean varieties used were Grobogan soybean and genetically modified organism (GMO) soybean. The anti browning agents used were sodium metabisulfite and ascorbic acid. The result showed that the best method of tempe flour making was within 70 oC of drying temperature, five minutes of blanching, and 0,1 % of anti browning agent in blanching solution. The interaction between treatments was significantly impacting (p<0.01) redness, pH, protein content, and organoleptic color, yet not significantly impacting (p>0.01) whiteness degree, lightness, yellowness, aw, water, ash, fat, carbohydrate content, water absorption and solubility index, emulsion activity, gelation capacity, also organoleptic aroma and taste.
Keyword: tepung tempe, natrium metabisulfit, asam askorbat, kedelai, fisikokimia

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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