Judul: Desain Proses Produksi Maltodekstrin Menggunakan Pati Talas Dengan Enzim α-amilase.
Abstrak: Pati talas sangat potensial dijadikan sebagai pati industri karena memiliki swelling power dan peak viscosity yang tinggi, serta membentuk struktur gel yang halus. Penelitian ini bertujuan untuk mendesain proses produksi maltodekstrin dari pati talas menggunakan enzim α-amilase. Tahapan dalam penelitian ini terdiri dari pemilihan alternatif proses, penentuan alur proses, perhitungan neraca massa, pemilihan mesin dan peralatan, penentuan tata letak pabrik, dan analisis finansial. Produksi maltodekstrin diawali dengan mereaksikan 600 kg pati talas yang disuspensikan dalam larutan CaCl2 dan enzim α-amilase sebagai katalisator dalam reaktor berpengaduk. Hasil pencampuran tersebut akan dimurnikan melalui proses ultrafiltrasi dan nanofiltrasi, kemudian dikeringkan dalam spray dryer. Produk yang diperoleh adalah 314,56 kg maltodekstrin dengan kadar air 3%. Kebutuhan energi listrik adalah 321,5 kWh/batch-nya. Tata letak bangunan ditentukan dengan metode Activity Relationship Chart (ARC) dan Total Closeness Rating (TCR). Luas bangunan produksi sebesar 211 m2, dengan luas tanah 300 m2. Desain proses produksi maltodekstrin dari pati talas layak secara ekonomi, dengan NPV sebesar Rp 7 016 913 045, Net B/C sebesar 4,61, IRR sebesar 47,43%, dan PP 3,12 tahun., Taro starch has potential to be used an industrial starch because it has high swelling power dan peak viscosity, and form a smooth gel structure. This study aims to design a production process of maltodextrin from taro starch. The stage of this study consist of selecting alternative processes, determining process flow, calculating mass balance, selecting machinery and equipments, determining plant layout, and economic analysis. Maltodextrin production begins by reacting 600 kg of taro starch in CaCl2 solution and α-amylase enzyme using a stirred tank reactor. The reaction result will purified by ultrafiltration dan nanofiltration methods, then dried by spray dryer. The yield of this process is 314,56 kg of maltodextrin with 3% of moisture content. The electrical energy required by production machinery dan equipments is 321,5 kWh/batch. Production building layout is determined by Activity Relationship Chart (ARC) dan Total Closeness Rating (TCR).. Production building area is 194 m2, with land area is 300 m2. Maltodextrin process design is economically feasible, with Rp 7 016 913 045 of NPV, 4,61 of Net B/C, 47,43% of IRR, and 3,12 years of payback period.
Keyword: Design process, feasibility, maltodextrin, taro starch

Judul: Rancangan Produksi Pati Umbi Talas (Colocasia esculenta L.)
Abstrak: Talas adalah umbi lokal yang mudah dibudidayakan dengan potensi produksi hingga 40 ton per hektar. Pati talas dapat berpeluang sebagai pati substitusi untuk memenuhi permintaan pati dalam negeri karena kandungan pati umbi talas yang tinggi. Tujuan dari penelitian ini adalah mendapatkan rancangan proses produksi pati talas serta mendapatkan tingkat kelayakan proyek produksi pati talas. Penelitian diawali dengan mengumpulkan data dan memilih metode yang tepat dengan mempertimbangkan beberapa parameter. Kemudian dilakukan perancangan proses dan perhitungan neraca massa. Berikutnya adalah analisis produksi secara rinci meliputi penentuan mesin dan peralatan, perhitungan energi, penjadwalan sederhana, dan perancangan tata letak. Serta diakhiri dengan analisis kelayakan rancangan produksi secara finansial. Produksi pati talas dirancang dengan bahan baku 30,000 ton umbi talas setiap tahunnya dengan hasil pati sebanyak 6,258 ton. Proses produksi meliputi pengupasan, pencucian, perendaman, pembilasan, penghancuran, pemerasan, penyaringan, pengeringan, serta pengemasan. Kebutuhan biaya investasi sebesar Rp2,461,387,500 dan biaya produksi Rp158,703,449,352 per tahun. Industri pati talas layak secara finansial dan memiliki nilai NPV Rp85,662,370,592; IRR 23.93%; B/C ratio 1.53; dan Payback Period 5.17 tahun., Taro is a local tuber that is easy to cultivate with potential production up to 40 tonnes per hectare. Taro starch has an opportunity as a substitute starch to meet domestic demand for starch due to the high starch content of taro tubers. The purpose of this research is to get the design of the taro starch production process and to get the feasibility level of the taro starch production project. The research begins with collecting data and selecting the appropriate method by considering several parameters. Then do the process design and mass balance calculations. Next is a detailed production analysis covering the determination of machines and equipment, energy calculations, simple scheduling, and layout design. And ended with a financial feasibility analysis of the production design. The production of taro starch is designed with a raw material of 30,000 tons of taro tubers each year with a starch yield of 6,258 tons. The production process includes stripping, washing, soaking, rinsing, crushing, squeezing, filtering, drying, and packaging. The investment cost required is IDR 2,461,387,500 and the production cost is IDR 158,703,449,352 per year. The taro starch industry is financially viable and has an NPV value of IDR 85,662,370,592; IRR 23.93%; B/C ratio 1.53; and Payback Period 5.17 years.
Keyword: financial analysis, production design, taro starch

Judul: Etno-ornitologi Burung Kancilan Flores (Pachycephala nudigula nudigula Hartert 1897) pada Masyarakat Lio di Taman Nasional Kelimutu
Abstrak: Bare-throathed whistler is one of several wild birds in Kelimutu National Park (TNKL) that is believed to have correlation with Lio Community‟s belief. The estimation of Bare-throated whistler‟s population in Kelimutu National Park was about 186.41-1668.07 individual by the density about 0.0389-0.3481 ind/ha with the sex ratio 6.2:1 that spreaded on area with height of 1100 – 1600 masl. The characteristic of Bare-throated whistler‟s habitat is a natural forest with various canopy level, high plant species diversity and high density. The habitat characteristics related to the availability of food in the form of insects, cover, safety and a nesting site. Generally the most of Lio community knew the existence of Bare-throated whistler directly or from their parents‟ stories. The perceptions of Lio Community to the Bare-throated whistler‟s existence is generally support the conservation efforts. The perceptions construct the Lio Community‟s atitude that tend to be conservative to the existence of Bare-throated whistler. The attitude shown by their behavior that not cathing the Bare-throated whistler from the TNKL‟s area or the outside. The attitude have an important role to the existence of Bare-throated whistler in Kelimutu National Park‟s area.
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