Low Molecular Weight Chitosan from Shrimp Shell Waste using Steam-Explosion Process Under Catalyst of Phosphotungstic Acid

The limited solubility of chitosan had limiting its application in any fields. Low molecular weight chitosan (LWCS) potentially produced to improve its solubility and characteristics. Steam explosion process was used to breakdown the intermolecular hydrogen bonding and phosphotungstic acid used as c...

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Bibliographic Details
Published in:Oriental journal of chemistry 2019-01, Vol.35 (1), p.193-199
Main Authors: Sugiyanti, Dina, Anggrahini, Sri, Pranoto, Yudi, Anwar, Chairil, Santoso, Umar
Format: Article
Language:English
Subjects:
Acids
Biopolymers
Catalysis
Catalysts
Chitosan
Explosions
Food
Functional groups
Hydrogen bonding
Lignin
Low molecular weights
Molecular weight
Solubility
Spectrum analysis
Weight reduction
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Summary:The limited solubility of chitosan had limiting its application in any fields. Low molecular weight chitosan (LWCS) potentially produced to improve its solubility and characteristics. Steam explosion process was used to breakdown the intermolecular hydrogen bonding and phosphotungstic acid used as catalyst to attact the glycosidic bond and produce shorter chain. The optimum temperature and phosphotungstic acid concentration on steam explosion process presented highest water solubility at T=160oC and 0.1%, respectively. It didn’t showed any change of functional group on FTIR analysis, no morphological damage by SEM analysis, and reduced the crystallinity. The particle size and molecular weight was reduced from 100 µm to 255 nm and 557 kDa to 4800 Da, respectively. It can be known that LWCS potentially produced with high solubility and fine characteristics through steam explosion process catalyzed by phosphotungstic acid.
ISSN:0970-020X
2231-5039
DOI:10.13005/ojc/350122