PRODUKSI REKOMBINAN SEFALOSPORIN ASILASE SEBAGAI BIOKATALIS UNTUK PRODUKSI ASAM 7-AMINOSEFALOSPORANAT
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Abstract
Asam 7-aminosefalosporanat (7-ACA) merupakan prekursor untuk produksi turunan sefalosporin semisintetik. Produksi 7-ACA secara enzimatik dapat menggunakan metode dua tahap dan satu tahap enzimatik. Metode enzimatik secara dua tahap menggunakan enzim asam D-amino oksidase (DAAO) untuk menghasilkan asam glutaril-7-aminosefalosporinat (GL-7-ACA) pada tahap pertama dan menggunakan asam glutaril-7-aminosefalosporinat asilase untuk menghasilkan 7-ACA pada tahap kedua. Metode enzimatik satu tahap dengan sefalosporin asilase (CPC asilase) mengubah CPC menjadi 7-ACA secara langsung. Tujuan penelitian adalah memproduksi rekombinan CPC asilase di dalam sel Escherichia coli BL21(DE3). Kultur Transforman E. coli BL21(DE3) diinduksi dengan konsentrasi IPTG 0; 0,25; 0,5; 0,75; 1; 2 mM selama 5 jam. Waktu induksi IPTG ditentukan pada 0, 1, 2, 3, 4 dan 5 jam. Hasil penelitian menunjukan bahwa CPC asilase diproduksi oleh E. coli BL21(DE3) dengan kondisi optimal produksi CPC asilase adalah konsentrasi IPTG 0,5 mM dan waktu induksi IPTG optimal adalah 5 jam.
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