BIOCHEMICAL CHARACTERIZATION OF RECOMBINANT PHYTASE ENZYME (phyK) FROM Klebsiella sp. ASR1 ENCAPSULATED WITH ALGINATE
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Abstract
Enzim fitase melepas molekul fosfor pada atom C dari benzena Inositol fitat. Tetapi fitase memiliki kelemahan tidak mampu bertahan terhadap kondisi ekstrim dalam lambung nonruminansia. Solusi dalam penelitian ini yaitu fitase dienkapsulasi menggunakan alginat. Penelitian ini bertujuan mengkarakterisasi fitase setelah dienkapsulasi menggunakan alginate. Hasil penelitian ini yaitu fitase yang dienkapsulasi memiliki aktivitas tertinggi pada pH 6,0, sedangkan fitase tanpa enkapsulasi pada pH 5,0. Suhu optimum untuk aktivitas tertinggi fitase yang dienkapsulasi yaitu 70ºC, sedangkan fitase tanpa enkapsulasi 37ºC. Untuk perlakuan penambahan ion logam, aktivitas tertinggi fitase yang dienkapsulasi terjadi dengan penambahan 0,1 mM Fe2+ dan 1,0 mM Ca2+, sedangkan fitase tanpa enkapsulasi dengan penambahan 0,1 mM Fe2+. Berdasarkan hasil penelitian ini, fitase yang dienkapsulasi memiliki keunggulan lebih banyak dibandingkan dengan fitase tanpa enkapsulasi, karena mampu bertahan pada pH dan suhu tinggi, dan beberapa efek ion logam.
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