TY - JOUR
T1 - Crystalline structure and thermal property characterization of chitin from Antarctic krill (Euphausia superba)
AU - Wang, Yanchao
AU - Chang, Yaoguang
AU - Yu, Long
AU - Zhang, Cuiyu
AU - Xu, Xiaoqi
AU - Xue, Yong
AU - Li, Zhaojie
AU - Xue, Changhu
PY - 2013/1/30
Y1 - 2013/1/30
N2 - Antarctic krill (Euphausia superba) has been widely studied and extensively recognized as a target for commercial fishing. In this study, Antarctic krill chitin was extracted from defatted Antarctic krill shell, and its crystalline structure and thermal properties were characterized by employing Fourier transform infrared spectroscopy, X-ray diffractometry, scanning electron microscopy, thermogravimetry, and differential scanning calorimetry. Results showed that Antarctic krill chitin corresponded to the α-polymorph, and was composed of small, stable, and uniform microcrystals. The degree of N-deacetylation was 11.28 ± 0.86%. The d-spacings of Antarctic krill chitin were 9.78 Å and 4.63 Å at (0 2 0) and (1 1 0) planes. The crystalline sizes were 6.07 nm and 5.16 nm at (0 2 0) and (1 1 0) planes, respectively. The activation energy of the polysaccharide chain decomposition was 123.35 kJ/mol and the glass transition (Tg) of Antarctic krill chitin was 164.96 °C.
AB - Antarctic krill (Euphausia superba) has been widely studied and extensively recognized as a target for commercial fishing. In this study, Antarctic krill chitin was extracted from defatted Antarctic krill shell, and its crystalline structure and thermal properties were characterized by employing Fourier transform infrared spectroscopy, X-ray diffractometry, scanning electron microscopy, thermogravimetry, and differential scanning calorimetry. Results showed that Antarctic krill chitin corresponded to the α-polymorph, and was composed of small, stable, and uniform microcrystals. The degree of N-deacetylation was 11.28 ± 0.86%. The d-spacings of Antarctic krill chitin were 9.78 Å and 4.63 Å at (0 2 0) and (1 1 0) planes. The crystalline sizes were 6.07 nm and 5.16 nm at (0 2 0) and (1 1 0) planes, respectively. The activation energy of the polysaccharide chain decomposition was 123.35 kJ/mol and the glass transition (Tg) of Antarctic krill chitin was 164.96 °C.
KW - Antarctic krill
KW - Chitin
KW - Crystalline structure
KW - Thermal property
UR - http://www.scopus.com/inward/record.url?scp=84867894923&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2012.09.084
DO - 10.1016/j.carbpol.2012.09.084
M3 - Article
C2 - 23218270
AN - SCOPUS:84867894923
VL - 92
SP - 90
EP - 97
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
IS - 1
ER -