AKTIVITAS LIGNINOLISIS DARI BASIDIOMYCETES YANG DAPAT DIPAKAI UNTUK BIODEGRADASI DIOKSIN
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Abstract
Senyawa-senyawa kimia dalam kelompok dioksin telah diketahui sebagai polutan lingkungan yang sangat beracun. Dibenzo-p-dioksin terpoliklorinasi dan dibenzofuran terpoliklorinasi dihasilkan selama proses pembakaran bahan-bahan organik. Pentaklorofenol, suatu senyawa mirip dioksin, banyak digunakan sebagai pengawet kayu, fungisida, bakterisida, herbisida, algisida dan insektisida. Beberapa jamur pelapuk putih memiliki potensi untuk menghasilkan enzim pengurai lignin dan mendegradasi senyawa-senyawa dioksin. Keanekaragaman jamur pelapuk putih di Indonesia yang tinggi merupakan sumber potensial mikroorganisme pengurai polutan lingkungan. Pada kajian ini, basidiomisetes diisolasi dari sampel-sampel tubuh buah dan kayu lapuk yang diambil dari tujuh provinsi di Indonesia. Tiga ratus tujuh puluh isolat basidiomisetes telah diseleksi aktivitasnya sebagai pendegradasi dioksin. Metode dye-decolorization digunakan pada seleksi ini. Hasil seleksi menunjukkan bahwa enam puluh isolat basidiomisetes memiliki aktivitas sebagai pendegradasi dioksin, tiga isolat di antaranya menunjukkan aktivitas tertinggi.
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