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ArtikelBiosynthesis of Polyamide 4, a Biobased and Biodegradable Polymer  
Oleh: Saskiawan, Iwan
Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Microbiology Indonesia vol. 2 no. 3 (Dec. 2008), page 119-123.
Topik: Polyamide 4; biodegradable polymer; y-aminobutyric acid; glutamate decarboxylase
Ketersediaan
  • Perpustakaan Pusat (Semanggi)
    • Nomor Panggil: MM78.2
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
    Lihat Detail Induk
Isi artikelPolymade 4, which is composed of repeating unit of y-aminobutyric acid (GABA), is a biobased and biodegradable polymer since it can be synthesized from renewable material instead of fossil-based material. GABA is produced by decarboxylation of glutamate (Glu) using glutamate decarboxylase (GAD: EC 4.1.1.15), which is produced by some microorganisms. In this study, enzymatic conversion of GABA from glutamate by Lactococcus lactis and Escherichia coli cell and chemical polymerization of GABA to polyamide 4 were revealed. The results show that GAD activity of E. coli was higher than that of L. lactis. The treatment of E. coli cell by heating and sonication increased the GAD activity and conversion rate of glutamate to GABA was up to 70.5%. The optimum temperature for this conversion is 37 C. On the other hand, chemical synthesis of polyamide 4 was catalyzed by heating GABA at 215 C for 2 minutes.
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