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Physicochemical characterisation of β-chitosan from Sepioteuthis lessoniana gladius
- Source :
- Food Chemistry. 141:907-913
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- β-Chitin and its chitosan from the gladius of Sepioteuthis lessoniana have been isolated, purified, characterised and compared with the commercial chitosan. Ash, moisture, mineral, metal and elemental content were analyzed using standard techniques. The optical activity of chitin was found to be levorotatory. The degree of deacetylation was calculated by potentiometric titration and (1)H NMR. Viscosity average molecular weight of β-chitosan was calculated by viscometry and size average molecular weight by GPC. The structure of β-chitosan was elucidated with FT-IR and NMR. Thermal nature, crystalline structure and morphology of β-chitosan were characterised through DSC, XRD and SEM, respectively. The water and fat binding capacity of β-chitosan presently studied was significantly higher than that of the commercial chitosan. The result of the present study adds that S. lessoniana gladius is also an additional source of β-chitin and chitosan of higher yield, lower molecular weight and higher degree of deacetylation.
- Subjects :
- Chitosan
Magnetic Resonance Spectroscopy
Molecular Structure
biology
Viscosity
Potentiometric titration
Decapodiformes
General Medicine
biology.organism_classification
Analytical Chemistry
Molecular Weight
Sepioteuthis
chemistry.chemical_compound
chemistry
Biochemistry
Chitin
Yield (chemistry)
Spectroscopy, Fourier Transform Infrared
Proton NMR
Animals
Molar mass distribution
Gladius
Food Science
Nuclear chemistry
Subjects
Details
- ISSN :
- 03088146
- Volume :
- 141
- Database :
- OpenAIRE
- Journal :
- Food Chemistry
- Accession number :
- edsair.doi.dedup.....8f8c5423aac514aac4c785fa362b0697