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

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Seung-Woo Lee ◽  
Young-Nam Jang ◽  
Jeong-Chan Kim
Keyword(s):  
Crassostrea Gigas ◽  
Phase Interface ◽  
Single Layer ◽  
Oyster Shell ◽  
Organic Matrix ◽  
Transitional Zone ◽  
Adductor Muscle ◽  
Muscle Scar ◽  
Entire Structure ◽  
Adult Oyster

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 aβ-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 ofCrassostrea gigascould be proposed.

scholarly journals Extraction and Identification of the Pigment in the Adductor Muscle Scar of Pacific Oyster Crassostrea gigas

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0142439 ◽  
Author(s):  
Shixin Hao ◽  
Xin Hou ◽  
Lei Wei ◽  
Jian Li ◽  
Zhonghu Li ◽  
...  
Keyword(s):  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Adductor Muscle ◽  
Muscle Scar

scholarly journals Correction: Extraction and Identification of the Pigment in the Adductor Muscle Scar of Pacific Oyster Crassostrea gigas

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0148704
Author(s):  
Shixin Hao ◽  
Xin Hou ◽  
Lei Wei ◽  
Jian Li ◽  
Zhonghu Li ◽  
...  
Keyword(s):  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Adductor Muscle ◽  
Muscle Scar

scholarly journals Proteomic characterization of oyster shell organic matrix proteins (OMP)

2016 ◽  
Vol 12 (05) ◽  
pp. 266-278 ◽  
Author(s):  
Abhishek Upadhyay ◽  
◽  
Vengatesen Thiyagarajan ◽  
◽  
◽  
...  
Keyword(s):  
Oyster Shell ◽  
Organic Matrix ◽  
Matrix Proteins ◽  
Shell Organic Matrix

scholarly journals STUDIES ON SHELL FORMATION

1961 ◽  
Vol 9 (4) ◽  
pp. 761-771 ◽  
Author(s):  
Norimitsu Watabe ◽  
Karl M. Wilbur
Keyword(s):  
Crystal Growth ◽  
Dendritic Growth ◽  
Three Dimensional ◽  
Outer Part ◽  
Organic Matrix ◽  
Transitional Zone ◽  
Homogeneous State ◽  
Concentration Gradients ◽  
Strong Concentration ◽  
Small Crystals

Details of crystal growth in the calcitostracum of Crassostrea virginica have been studied with the purpose of analyzing the formation of the overlapping rows of oriented tabular crystals characteristic of this part of the shell. Crystal elongation, orientation, and dendritic growth suggest the presence of strong concentration gradients in a thin layer of solution in which crystallization occurs. Formation of the overlapping rows can be explained by three processes observed in the shell: a two-dimensional tree-like dendritic growth in which one set of crystal branchings creeps over an adjacent set of branchings; three-dimensional dendritic growth; and growth by dislocation of crystal surfaces. Multilayers of crystals may thus be formed at one time. This is favored by infrequent secretion of a covering organic matrix which would inhibit crystal growth. The transitional zone covering the outer part of the calcitostracum and the inner part of the prismatic region is generally characterized by aggregates of small crystals with definite orientation. Growth in this zone appears to take place in a relatively homogeneous state of solution without strong concentration gradients. Thin membranes and bands of organic matrix were commonly observed in the transitional zone bordering the prismatic region. The membrane showed a very fine oriented network pattern.

Primary Structure of Myostracal Prism Soluble Protein (MPSP) in Oyster Shell, Crassostrea gigas

2006 ◽  
Vol 25 (4) ◽  
pp. 288-294 ◽  
Author(s):  
Seung Woo Lee ◽  
Young Moon Kim ◽  
Hong Seok Choi ◽  
Jai Myung Yang ◽  
Cheong Song Choi
Keyword(s):  
Primary Structure ◽  
Crassostrea Gigas ◽  
Soluble Protein ◽  
Oyster Shell

scholarly journals Oyster Shell Waste (Crassostrea Gigas) as A Cheap Adsorbent for Adsorption Of Methylene Blue Dyes: Equilibrium and Kinetics Studies

2021 ◽  
Vol 1 (4) ◽  
pp. 95-102
Author(s):  
Muhammad Muhammad ◽  
Meriatna Meriatna ◽  
Nia Afriani ◽  
Rizka Mulyawan
Keyword(s):  
Methylene Blue ◽  
Correlation Coefficient ◽  
Crassostrea Gigas ◽  
Adsorption Process ◽  
Adsorption Equilibrium ◽  
Oyster Shell ◽  
Second Order ◽  
Order Model ◽  
Pseudo Second Order ◽  
Shell Powder

In this study, Oyster (Crassostrea gigas) shell powder which contains calcium carbonate (CaCO3) was converted into calcium oxide (CaO). The Oyster shell powder that had been activated was utilized for the adsorption of the methylene blue (MB) dyeing material, which is one of waste water concerns. Oyster shells were crushed and sieved into 100 mesh sized powder and then calcinated at a temperature of 600℃ and 800℃ both for 4 hours period. To determine the adsorption equilibrium, methylene blue (MB) solution was used with varying concentration from 10 to 50 mg/L in which the adsorbent weighing 3 g was put into a conical flash and shaken until the adsorption equilibrium was reached. As for the adsorption kinetics, 250 mL MB solution was used with initial concentrations of 10, 20 and 30 mg/L, with an adsorbent weight of 3 g and a solution at pH 11 for each concentration. The evaluation of the experimental data from the adsorption process is well explained by the Freundlich equation, with the correlation coefficient value (R2) found to be 0.9999, where the value of the adsorption intensity (n) is close to unity; this shows that the adsorption is multilayer or in other words the adsorption energy is heterogeneous. The kinetics study also shows that pseudo second-order model is the most applicable to the adsorption process. From the pseudo-second-order model, with the correlation coefficient between 0.9984 - 0.9999 can explain that the methylene blue (MB) adsorption process is chemically based sorption or in other words termed as chemisorption.

The Acute Inflammatory Reaction in Two Different Tissues of the Pacific Oyster, Crassostrea gigas

1966 ◽  
Vol 23 (12) ◽  
pp. 1913-1921 ◽  
Author(s):  
Gilbert B. Pauley ◽  
Albert K. Sparks
Keyword(s):  
Leydig Cell ◽  
Crassostrea Gigas ◽  
Acute Inflammation ◽  
Pacific Oyster ◽  
Toxic Substance ◽  
Adductor Muscle ◽  
Cell Area ◽  
Optimum Conditions ◽  
The Pacific ◽  
Different Tissues

This study describes the histopathology and the associated gross pathological alterations of experimentally induced acute inflammation in the oyster, Crassostrea gigas, after turpentine injections into two different tissues, the adductor muscle and the Leydig cell area. Under optimum conditions the oyster can successfully combat a toxic substance such as turpentine, with the adductor muscle being more capable of handling such an irritant than the Leydig cell area. Inflammation in vertebrates is compared with that in the oyster.

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