CHITOSAN PREPARATIONWITH MULTISTAGE DEACETYLATION OF CHITINAND INVESTIGATIONOF ITS PHYSICOCHEMICALPROPERTIES Preparasi Kitosan Me/alui Deasetllasi Kitin Secara Bertahap dan Sifat Fisikokimianya
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2009
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/28022/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=11085 |
Daftar Isi:
- ABSTRACT Study of chitosan prepared with chitin deacetylation by multistage alkali treatments has been done. Chitin was extracted from Lampung white shrimp's (Litophenaeus vannamei) shell. The FTIR spectroscopy was used to determine deacetylation degree of chitin/chitosan. Viscometry was used to determine molecular weight of chitosan. Effect of chitin deacetylation by multistage alkali treatments toward deacetylation degree and molecular weight was studied by comparingit with continuous alkali treatment. The results showed-that chitosan prepared by multistage alkalitreatmenthad higherdeacetylation.degreethan thoseof.obtainedby continuousalkalitreatment.Multistage alkali treatment does not influence the chitosan's molecular weight. Despite its significant effect on the deacetylation process, concentration of alkali does not significantly effect the process of depolimerization. Keywords: chitin, chitosan, multistage treatments, deacetylation degree, molecular weight