1. Isolation of nano-chitosan of paddy snail waste (Pila ampullacea).
- Author
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Budiati, Titik, Yudiastuti, Silvia Oktavia Nur, Suryaningsih, Wahyu, Putri, Helen Diana, and Wahyono, Agung
- Subjects
GELATION ,CHITOSAN ,FREEZE-drying ,DEACETYLATION - Abstract
The objectives of this study aim to determine the isolation and synthesis of nano-chitosan from paddy snail waste. Different duration of NaOH immersion at deacetylation (6, 8, 17, 19 days) to isolate chitosan and different synthesis nano-chitosan methods (ionic gelation with drying method and ionotropic pre-gelation with the freeze-drying method) to synthesize nano-chitosan was studied. The deacetylation degree of chitosan was found 66%, 80%, 82%, and 85% for 6, 8, 17, and 19 days, respectively. The particles of nano-chitosan by using the ionic gelation method with drying were non-uniform particle sizes ranging from 193.48 to 356.20 nm as much as 60.4% and 740.89 to 945.74 nm as much as 14.35%. Using ionotropic pre-gelation followed by chitosan polyelectrolyte complexation and freeze-drying resulted in non-uniform particle sizes ranging from 193.48 to 945.74 nm as much as 24%. The longer duration of NaOH immersion at deacetylation increases the degree of deacetylation and ionic gelation with drying could reduce the size of particles. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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