Judul: Design and Build an Analog Rice Extruder Capacity of 100 Kg/Hour
Abstrak: Beras analog adalah modifikasi dari campuran tepung jagung dan tapioka yang sangat baik untuk kesehatan konsumen dibanding beras padi. Selain itu, beras analog juga berperan sebagai program ketahanan pangan di Indonesia untuk mengantisipasi jika terjadi gagal panen padi. Tujuan dari dilaksanakannya penelitian ini adalah merancang mesin ekstruder beras analog dengan kapasitas 100 kg dalam sekali proses/pemerasan serta menguji fungsionalitas dan performansi dari mesin ekstruder yang dirancang. Cara kerja Ekstruder yang dirancang adalah dengan memasukkan campuran adonan ke dalam Hopper yang memiliki pengaduk dan Screw pengepres untuk mengantarkan adonan ke cetakan. Penelitian ini dilaksanakan dengan tahapan dimulai dari identifikasi masalah, perumusan masalah, perancangan desain ekstruder, uji perfomansi, dan pengolahan data. Hasil perancangan desain mengacu pada analisis tiap bagian ekstruder seperti transmisi yang digunakan, dimensi Hopper, diameter Screw, dan kecepatan pisau pemotong beras analog. Berdasarkan hasil analisis, transmisi yang digunakan adalah motor listrik 3 fase dengan tenaga 4HP berkecepatan 2860 RPM dengan gearbox 1:10 yang ditransmisikan menggunakan V-belt tipe A-49, dimensi Hopper dengan panjang 405mm, lebar 391mm, dan tinggi 385mm, dimensi diameter Screw sebesar 8,5 cm, dan kecepatan pisau pemotong 252,3 RPM agar potongan beras analog sesuai dengan dimensi beras pada umumnya. Hasil Rancangan extruder ini mampu menghasilkan kapasitas kerja hingga 101,61kg/jam.
Keyword: analog rice, extruder, Hopper with mixer, Screw press

Judul: Studi Pembuatan Beras Analog Dari Berbagai Sumber Karbohidrat Menggunakan Teknologi Hot Extrusion
Abstrak: Analog rice is artificial rice product made from non rice and non wheat raw material by twin screw extruder. The objectives of this research were to formulate and to characterize rice analog made from a mixture of sorghum, corn, mocaf, maizena and aren sago. The method of rice analog production is hot extrusion by twin screw extruder. The research steps were formulation of analog rice, hedonic rating sensory evaluation to choose best sample, and characterization physico-chemical of best sample. The best two samples were choosen. They were analog rice made from sorghum flour 30% maizena 15% and aren sago 15% and analog rice made from mocaf 30% and maizena 30%. Both of best samples had higher carbohydrate and dietary fiber content than polished rice.
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Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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