PEMBUATAN DAN KARAKTERISASI KITOSAN KULIT UDANG GALAH

Zidni Azizati

doi:10.21580/wjc.v3i1.3878

PEMBUATAN DAN KARAKTERISASI KITOSAN KULIT UDANG GALAH

* - Universitas Islam Negeri Walisongo Semarang

(*) Corresponding Author

DOI: 10.21580/wjc.v3i1.3878

Abstract
References
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Kitosan merupakan biopolimer yang diturunkan dari kitin, sumber alam yang dapat diperbarui yang sangat berlimpah di dunia setelah selulosa. Kitosan disintesis dari sumber alam yang berasal dari limbah krustasea, ikan, dan kulit udang. Salah satu aplikasi limbah kulit udang yang paling umum yaitu isolasi kitosan. Preparasi kitosan terbagi menjadi tiga tahap. Deproteinasi, dealuminasi, dan deasetilasi. Isolasi kitosan meliputi preparasi limbah kulit udang menjadi kitin dan deasetilasi kitin menjadi kitosan. Kitin dan kitosan dikarakterisasi dengan FTIR dan XRD. Derajat deasetilasi kitosan pada penelitian ini diukur menggunakan FTIR sebesar 93,47%. Berat molekul kitosan ditentukan dengan viskosimeter kinematik sebesar 19.000 g/mol. Pola XRD kitosan menunjukkan bahwa struktur kristal kitosan merupakan ortorombik. Hasil analisis dengan FTIR dan XRD menunjukkan bahwa kitosan telah berhasil disintesis pada penelitian ini.

Keywords: Kitosan, kulit-udang, derajat deasetilasi.

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