Characteristics of the Aragonitic Layer in Adult Oyster Shells, Crassostrea gigas : Structural Study of Myostracum including the Adductor Muscle Scar

Myostracum, which is connected from the umbo to the edge of a scar, is not a single layer composed of prismatic layers, but a hierarchically complex multilayered shape composed of minerals and an organic matrix. Through the analysis of the secondary structure, the results revealed that a β-antiparal...

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Bibliographic Details
Published in:Evidence-based complementary and alternative medicine 2011-01, Vol.2011 (2011), p.1-10
Main Authors: Lee, Seung-Woo, Jang, Young-Nam, Kim, Jeong-Chan
Format: Article
Language:English
Subjects:
Adductor muscle
Aragonite
Biochemistry
Bivalvia
Calcification
Calcite
Chemistry
Chitin
Composite materials
Crassostrea gigas
Crassostrea virginica
Decalcification
Deproteinization
Fourier transforms
Mineralization
Minerals
Mollusca
Muscles
Oysters
Protein structure
Proteins
Scanning electron microscopy
Secondary structure
Shells
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Summary:Myostracum, which is connected from the umbo to the edge of a scar, is not a single layer composed of prismatic layers, but a hierarchically complex multilayered shape composed of minerals and an organic matrix. Through the analysis of the secondary structure, the results revealed that a β-antiparallel structure was predominant in the mineral phase interface between the myostracum (aragonite) and bottom folia (calcite). After the complete decalcification and deproteinization, the membrane obtained from the interface between the myostracum buried in upper folia, and the bottom folia was identified as chitin. The transitional zone in the interface between the adductor muscle scar and folia are verified. The myostracum disappeared at the edge of the scar of the posterior side. From this study, the entire structure of the myostracum from the adult oyster shell of Crassostrea gigas could be proposed.
ISSN:1741-427X
1741-4288
DOI:10.1155/2011/742963