Judul: .IDENTIFICATION AND CHARACTERIZATION OF VIBRIO PARAHAEMOLYTICUS BACTERIA IN FISHERY PRODUCTS. SUPERVISED
Abstrak: Vibrio merupakan genus bakteri gram negatif, sel tunggal berbentuk batang pendek yang bengkok, berukuran panjang 1,4-5,0 µm dan lebar 0,3-1,3 µm, bersifat motil dan mempunyai flagel polar dan secara khas ditemukan pada air laut. Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi kandungan bakteri V. parahaemolyticus pada produk perikanan. Metode uji yang digunakan dalam penelitian ini menggunakan beberapa metode yaitu, uji agar selektif yang mendapatkan hasil empat sampel negatif dan 16 sampel positif terdeteksi Vibrio. Hasil uji ketahanan suhu dan ketahanan garam mendapatkan hasil dua negatif dan 14 hasil positif. Hasil uji oksidasi mendapatkan hasil empat hasil negtif dan 10 hasil positif. Hasil uji API 20E terdeteksi 6 isolat yang mengandung V. parahaemolyticus dan delapan isolat tidak terdeteksi mengandung V. parahaemolyticus. Hasil uji cepat menunjukkan isolat yang teridentifikasi bakteri V. parahaeolyticus adalah SCU, SCC, SLKD, SLB, SRBL dan SRU isolat yang tidak teridentifikasi bakteri yaitu SCKB, SCB, SLU, SBB, SBKTG, SBU, SRBLA dan SRKD., Vibrio is a genus of gram-negative bacteria, single-cell bent short rods, measuring 1.4 - 5.0 µm in length and 0.3 - 1.3 µm in width, are motile and have polar flagella and are typically found in seawater. This study aims to isolate and identify the content of V. parahaemolyticus bacteria in fishery products. The test method used in this study uses several rapid test methods, including the test to be selective to get four negative samples and 16 positive samples detected by vibrio. The test results of temperature resistance and salt resistance get two negative results and 14 positive results. The results of the oxidation test got four negative results and 10 positive results. API 20E test results detected 6 isolates containing V. parahaemolyticus and eight isolates were not detected containing V. parahaemolyticus. Rapid test results showed the isolates identified by the Vibrio parahaeolyticus bacteria were SCU, SCC, SLKD, SLB, SRBL and SRU isolates that were not identified by bacteria, namely SCKB, SCB, SLU, SBB, SBKTG, SBU, SRBLA and SRKD
Keyword: API 20E, fish, shrimp, squid, Vibrio parahaemolyticus

Judul: : Seleksi Bakteri Kandidat Probiotik Potensial Asal Air Laut dan  Sedimen Tambak Udang sebagai Penghambat Vibrio  parahaemolyticus
Abstrak: Vibrio parahaemolyticus merupakan salah satu bakteri patogen penyebab penyakit vibriosis. V. parahaemolyticus strain tertentu yang mengekspresikan toksin PirA dan PirB merupakan penyebab utama penyakit Acute Hepatopancreatic Necrosis Disease pada udang. Upaya pencegahan infeksi bakteri pada udang yaitu melalui aplikasi probiotik dengan diawali proses seleksi kandidat probotik potensial. Penelitian ini bertujuan mendapatkan isolat dan melakukan karakterisasi bakteri probiotik potensial yang berasal dari air laut dan sedimen tambak sebagai upaya penghambat V. parahaemolyticus. Penelitian dilakukan secara eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 2 ulangan pada uji antagonistik in vitro (kultur bersama) dan uji non patogenisitas. Hasil penelitian berhasil mendapatkan 37 isolat kandidat probiotik dengan 10 isolat memiliki aktivitas enzim terbesar. Uji antagonistik in vitro dengan metode Kirby-Bauer dan uji kultur bersama didapatkan 2 isolat terbaik dengan kode LAZ-2 dan SAZ-22. LAZ-2 dan SAZ 22 merupakan bakteri kandidat probiotik terpilih yang memiliki aktivitas enzimatik, mampu menghambat pertumbuhan bakteri patogen V. parahaemolyticus serta tidak bersifat patogen terhadap udang vaname., Vibrio parahaemolyticus is one of the pathogenic bacteria that cause vibriosis. V. parahaemolyticus strain that express the PirA and PirB toxin is the main causative agent of Acute Hepatopancreatic Necrosis Disease in shrimp. The effort to prevent bacterial infections in shrimp is through the application of probiotics, which begins with the process of screening for potential probiotic candidates. This study aims to obtain isolates and characterize the potential probiotic bacteria isolated from seawater and pond sediments as an inhibition effort V. parahaemolyticus. The study was carried out experimentally using a completely randomized design (CRD) with 3 treatments and 2 replications in an antagonistic test (co culture) and in the non-pathogenicity test. The results of the study succeeded in obtaining 37 probiotic candidate isolates with 10 isolates having the greatest enzyme activity. Antagonistic test in vitro with the Kirby Bauer method and co-culture, the 2 best isolates with the LAZ-2 and SAZ-22 codes. LAZ-2 and SAZ-22 are selected probiotic candidates have enzymatic activity, capable of inhibiting the growth of V. parahaemolyticus and are not pathogenic to vannamei shrimp.
Keyword: probiotic, vannamei shrimp, Vibrio parahaemolyticus

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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