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    Pembuatan Senyawa Epoksi Dari Metil Ester Asam Lemak Sawit Destilat Secara Enzimatis

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    Date
    2009
    Author
    Tarigan, Azhar Ramadhani
    Advisor(s)
    Pandia, Setaity
    Manurung, Renita
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    Abstract
    Epoxy compound is commercial product available for application for a few usefulness like plasticizer, stabilizer and coating at polymer resin, and also antioxidant at processing of natural rubber. Palm fatty acid distillate (PFAD) is derivat vegetable oil which is exploited by side fractions like olein, stearat and others in its use for the application of oleochemical product. ME-PFAD epoxidized in enzymatic for getting epoxy compound apply some biocatalyst from lipase enzymes immobillis like Rhizomucor miehei, Candida antarctica, and Carica papaya. Enzyme Rhizomucor miehei, and Carica papaya are hasn't yield oxyran oxygen of maximum only enzyme Candida antarctica capable to doing reaction of epoksi to methyl ester PFAD with result oksiran oxygen maximum 2,43% at concentration of 5%, temperature of 40OC, and reaction time of 42 hour. Epoxidation process optimization based on Response Surface Methodology (RSM) at concentrations of 3,3%; 4%; 5%; 6%; 6,7% (w/w), reaction temperature at 31,6OC; 35OC; 40OC; 45OC; 48,4OC, and reaction time at 40,3 hour; 41 hour; 42 hour; 43 hour; 43,7 hour. The optimum convertion epoxidation is 79,85% obtained at concentration of Candida antarctica 4% (w/w), reaction temperature 45OC and reaction time during 41 hour.
     
    Senyawa epoksi merupakan produk komersial yang dapat diaplikasikan untuk beberapa kegunaan seperti pelentur (plasticizer), stabiliser dan coating pada resin polimer, serta merupakan antioksidan pada pengolahan karet alam. Asam lemak sawit destilat (ALSD) merupakan derivat minyak nabati yang kurang dimanfaatkan disamping fraksi-fraksi lain seperti olein, stearat dan lain-lain dalam penggunaannya untuk aplikasi produk oleokimia. ME-ALSD diepoksidasikan secara enzimatis untuk mendapatkan senyawa epoksi menggunakan beberapa biokatalis dari enzim lipase imobilis seperti Rhizomucor miehei, Candida antarctica, dan Carica papaya. Enzim lipase Rhizomucor miehei, dan Carica papaya tidak menghasilkan oksiran oksigen yang maksimum hanya enzim lipase Candida antarctica yang mampu melakukan reaksi epoksi terhadap metil ester ALSD dengan hasil oksiran oksigen maksimum sebesar 2,43% pada konsentrasi sebesar 5%, temperatur 40OC dan waktu reaksi 42 jam. Proses epoksidasi dioptimasikan berdasarkan metode RSM (Response Surface Methodology) pada konsentrasi enzim sebesar 3,3%; 4%; 5%; 6%; 6,7% (b/b), temperatur reaksi 31,6OC; 35OC; 40OC; 45OC; 48,4OC, dan pada waktu reaksi 40,3 jam; 41 jam; 42 jam; 43 jam; 43,7 jam. Konversi optimum epoksidasi sebesar 79,85 % diperoleh pada konsentrasi Candida antarctica 4% (b/b), temperatur reaksi 45oC dan waktu reaksi selama 41 jam.

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    http://repositori.usu.ac.id/handle/123456789/41784
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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
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