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Abstract
Agarosa telah diisolasi dari makroalga merah Euchema Cottoni yang terdapat di perairan Takalar. Agarosa ini dikarakterisasi berdasarkan persen rendamen, sifat-sifat fisiknya dan dianalisa dengan spektrofotometer IR. Sifat-sifat ini dibandingkan dengan produk agarosa komersial Takara, Japan dan ditemukan bahwa agarosa yang diisolasi dari E. Cottoni menunjukkan hasil yang relatif sama dengan agarosa komersial. Berdasarkan hasil isolasi agarosa dari makroalga, kandungan sulfatnya sebesar 0,26%, titik leleh sebesar 96 0C, dan viskositas sebesar 14 cps. Agarosa ini kemudian diaplikasikan untuk pemisahan fragmen DNA dengan hasil menunjukkan kualitas pemisahan dan ketajaman pita yang kurang baik jika dibandingkan dengan agarosa komersil.
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