alexa Chemical Characterization of Cancer Pagurus, Maja Squin
ISSN: 2375-446X

Poultry, Fisheries & Wildlife Sciences
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Research Article

Chemical Characterization of Cancer Pagurus, Maja Squinado, Necora Puber and Carcinus Maenas Shells

Pires C1,3*, Marques A1,3, Carvalho ML2 and Batista I1,3

1Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere, Rua Alfredo Magalhães Ramalho 6, Libson, Portugal

2Center of Atomic Physics, University of Libson, Libson, Portugal

3Interdisciplinary Center of Marine and Environmental Research, University of Porto, Rua das Bargas, Porto, Portugal

*Corresponding Author:
Pires C
Division of Aquaculture and Upgrading (DivAV)
Portuguese Institute for the Sea and Atmosphere
Rua Alfredo Magalhães Ramalho 6
Libson, Portugal
Tel: +(351) 213 027 000
Fax: (+351) 213 015 948
E-mail: [email protected]

Received Date: April 19, 2017; Accepted Date: June 08, 2017; Published Date: June 16, 2017

Citation: Pires C, Marques A, Carvalho ML, Batista I (2017) Chemical Characterization of Cancer Pagurus, Maja Squinado, Necora Puber and Carcinus Maenas Shells. Poult Fish Wildl Sci 5: 181. doi: 10.4172/2375-446X.1000181

Copyright: © 2017 Pires C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The present study is a characterization of the chemical composition of crab shells from brown crab, spider crab, velvet crab and green crab. The chitin content of crab shells varied between 9.7 and 16.4% and the protein content was in the range of 13.2 to 20.7%. Ash was the major constituent and accounted for more than 70%. The total carotenoid content ranged between 0.6 and 9.3 μg/g depending on the crab species. Concerning macro elements their content followed the descending order in all species: Ca>P>S>Sr>Cl>K. In the case of trace elements content the descending order in brown crab was: Br>Fe>Rb>Cu>Zn; in spider crab was: Br>Fe>Rb>Zn>Cu and in velvet and green crab was: Br>Fe>Zn>Rb>Cu. The level of contaminants was relatively low and the descending order of their content was the following: As>Pb>Cd>Hg. Crab shells are a potential source of chitin and the levels of macro and trace elements together with the low contaminants concentration make them a raw material for chitin production or utilization as feed ingredients or fertilizers.

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