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    Optimasi Pembuatan Bioplastik Polihidroksialkanoat dengan Menggunakan Bakteri Mesofilik dan Media Limbah Cair Pabrik Kelapa Sawit

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    Date
    2010
    Author
    Ningsih, Sri Widia
    Advisor(s)
    Wirjosentono, Basuki
    Herawan, Tjahjono
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    Abstract
    Optimization of production of polyhydroxyalkanoates (PHA) bioplastic using mesophilic bacteria and culture medium from palm oil mill effluent has been investigated. Strain L1 3 1 was cultured in medium from outlet of anaerobic fixed bed reactor tank. Response surface methodology with central composite design (CCD) was used to optimize the parameter of PHA production. The variables used in this investigation were the concentration of glucose (g/L), temperature (0C) and incubation times (days). The optimum condition of production of the cell dry weight (CDW) and PHA was obtained at 5 g/L glucose, the incubation temperature of 30oC and 5 days of incubation time with p < 0.05. FT-IR characterization of the bioplastic structure of the PHA obtained by a short chain length poly(3-hydroxybutyrate-co-3- hydroxyvalerate) or (P(3HB-co-3HV) with molecular weight 13400.79431 g mol, and thermal value of 154.72 and 170.58oC Tm, 19 oC Tg.
     
    Telah dilakukan optimasi pembuatan bioplastik polihidroksialkanoat (PHA) dengan menggunakan bakteri mesofilik dan media limbah cair pabrik kelapa sawit. Strain L1 3 1 digunakan sebagai bakteri yang dibiakkan dalam media keluaran tangki reaktor anaerobik unggun tetap (RANUT). Optimasi dilakukan menggunakan metode tanggap permukaan dengan central composite design 3 variabel. Parameter yang dioptimasi adalah konsentrasi glukosa (g/L), temperatur (0C) dan waktu inkubasi (hari). Hasil optimum yang diperoleh dalam penelitian ini untuk berat sel kering (CDW) dan produksi PHA pada kondisi 5 g/L glukosa, 30oC temperatur inkubasi dan 5 hari waktu inkubasi dengan level kepercayaan (p < 0,05). Hasil karakterisasi FT-IR diperoleh struktur bioplastik PHA panjang rantai pendek poli(3-hidroksibutirat-co-3- hidroksivalerat) atau (P(3HB-co-3HV) dengan berat molekul 13400,79431 g/mol dan nilai termal Tm 154,72 dan 170,58oC, Tg 19oC.

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    http://repositori.usu.ac.id/handle/123456789/39153
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    Repositori Institusi Universitas Sumatera Utara - 2025

    Universitas Sumatera Utara

    Perpustakaan

    Resource Guide

    Katalog Perpustakaan

    Journal Elektronik Berlangganan

    Buku Elektronik Berlangganan

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV