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Riswijanto
Abstrak :
Minyak goreng diet adalah minyak goreng yang tidak dapat dimetabolisine oleh tuhuh dan dapat mcnarik koleslerol serta asam lemak bebas keluar dari tubuh. Studi ini . mensintesa ester dari sukrosa , fruktosa dan asam oleat serta stearat dengan menggunakan katalis asam (HC1) pada temperature 45 "C dengan pelarut DMF. Senyawa ester sukrosa oktaoluat dan fruklosa pentaoleat terbentuk dengan ditandai hilangnya serapan gugus OH pada bilangan gelombang 3500 - 3326 cm. Reaksi berlangsung dengan waktu 96 jam dan 112 jam.Titik didih sukrosa oktaoleat adalah 234 - 236 "C frukiosa penta oleat 216 - 217 "C fruktosa petaolat 257-260 °C. Sukrosa oklaslearal 272-274 "C sedangkan titik didih minyak bimoli 182- I83°C.
Cholesterol and trigliserida may he excreted by diet palm oil from the human body. In this study, it had already been synthesied such ester like as fructuosa pentasicoric. fructose pentastcaric. sucrosa octa olcic and sucrose oclasicaric. This ester can be synthesizes by substitution reaction between oleic or sacaric acid and sucrose or fructose as carbohydrate base.Those ester result simply from heating oleic or stearic acid and sucrosa or fructosa in DMF solution containing small amount of strong acid (HCI) catalyst at 45 °C. The esterification reaction is successfully, its to be convince by the fungsional group of hidroksil (3500 3326 em "1) have already disappear. The reaction completed at about 96 hour for fructose pentanteic ester and 112 "C of sucrose octaoleic. The boiling point of fructose penta oleic - 216-217 C. Sucrosa ociaoleic = 234-236 "C. Fructosa pentaolcic = 257-260 "C. Sucrose octastearie -? 272-274 "f where as Bimoli palm oil= 182-183 °C.
[place of publication not identified]: Sains Indonesia, 2003
SAIN-8-2-2003-22
Artikel Jurnal  Universitas Indonesia Library
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Doni Kurniawan
Abstrak :
Indonesia merupakan produsen Crude Palm Oil (CPO) terbesar di dunia dengan produksi sebesar 26,5 juta ton (55,5%) pada tahun 2013 (GAPKI, 2014). Pusat-pusat produksi CPO berada di pulau Sumatera dan Kalimantan yang juga merupakan penghasil minyak bumi dan gas. Namun demikian pada kedua pulau tersebut justru mengalami defisit listrik selama satu dekade terakhir. Hasil penelitian menunjukkan bahwa parameter uji berupa efisiensi thermal, daya, tegangan, frekuensi, dan respon terhadap perubahan beban untuk komposisi bahan bakar CPO murni (CPO100) maupun campuran (CPO25 dan CPO75) terhadap solar tidak memiliki perbedaan yang signifikan, sehingga CPO layak menggantikan peran solar sebagai bahan bakar generator set diesel pada komposisi dan suhu tertentu. Konsumsi bahan bakar berturut-turut Solar100 (414,85 gr/kWh), CPO25 (495,19 gr/kWh), CPO100 (522,24 gr/kWh) dan CPO75 (528,41 gr/kWh). Biaya perolehen energi listrik dihitung melalui Unit Cost of Electricity (COE) berturut-turut CPO100 (Rp. 5.772,17/kWh), CPO75 (Rp. 6.615,52/kWh), Solar100 (Rp. 7.158,43/kWh) dan CPO25 (Rp. 7.754,26/kWh). Hasil analisa sensitivitas COE menunjukkan Fuel Price memiliki pengaruh yang sangat kuat terhadap perubahan nilai COE ......Indonesia is a crude palm oil (CPO) producer in the world with a production of 26.5 (55.5%) million tonnes in 2013 (GAPKI, 2014). CPO production centers located on the island of Sumatra and Kalimantan, which is also a center of oil and gas production. However, the two islands had power deficit during the last decade. Based on the research, the test parameters such as thermal efficiency, power, voltage, frequency, and response to changes in the composition of the fuel load for pure CPO (CPO100) or mixed (CPO25 and CPO75) against solar does not have significant differences, so that the CPO worthy of replacing the role diesel as fuel for diesel generator sets for certain composition and temperature. SFC value respectively Solar100 (414,85 gr/kWh), CPO25 (495,19 gr/kWh), CPO100 (522,24 gr/kWh) and CPO75 (528,41 gr/kWh). The cost for producing electrical energy is calculated by Unit Cost of Electricity (COE) respectively CPO100 (Rp. 7.689,47/kWh), CPO75 (Rp. 8.532,82/kWh), Solar100 (Rp. 8.847,41/kWh) and CPO25 (Rp. 9.291,03/kWh). The sensitivity analysis shows that the Fuel Price has a very strong influence on the change in value of COE.
Depok: Fakultas Teknik Universitas Indonesia, 2015
T44463
UI - Tesis Membership  Universitas Indonesia Library