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Temperature, salinity and body-size influences depuration of heavy metals in commercially important edible bivalve molluscs of India

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Relation http://eprints.cmfri.org.in/16169/
https://www.sciencedirect.com/science/article/abs/pii/S0045653522023724?via%3Dihub
https://doi.org/10.1016/j.chemosphere.2022.135879
 
Title Temperature, salinity and body-size influences depuration of heavy metals in commercially important edible bivalve molluscs of India
 
Creator Chinnadurai, S
Elavarasan, K
Geethalakshmi, V
Kripa, V
Mohamed, K S
 
Subject Bivalves
Molluscan Fisheries
 
Description The effect of temperature, salinity and body-size on depuration of naturally accumulated heavy metals in clams, mussels and oysters harvested from Ashtamudi and Vembanad estuaries of Kerala, India were investigated using a static depuration system. Before depuration, the concentrations of heavy metals such as Ni, Co, Fe, Mn, Cu, Pb and Zn were analysed and it was found that the Fe, Zn, Cu and Pb contents in all the three bivalve molluscs were above the prescribed limit which poses a significant health risk to bivalve consumers. To protect consumer food safety, depuration experiments were conducted at varying temperatures, salinities and body-sizes. The clams, mussels and oysters depurated under the room temperature depuration system (RTDS) showed a better reduction of heavy metals compared with low-temperature depuration system (LTDS). ANOVA showed clams and mussels depurated at RTDS significantly (p  0.05) difference in oysters between RTDS and LTDS. Further, clams and mussels depurated at low salinity (15-psμ) showed high resistance against Pb reduction. But, all the heavy metals, particularly, Pb, Fe, Zn and Cu were effectively removed at higher salinity depuration (25-psμ and 35-psμ). Moreover, irrespective of the body-size of clams, mussels and oysters used for depuration, a significant (p 30 mm; mussel >45 mm, and oyster >65 mm length) as optimum conditions for producing safe bivalves for consumption in the tropics.
 
Publisher Elsevier
 
Date 2022
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/16169/1/Chemosphere_2022_Kripa%20V.pdf
Chinnadurai, S and Elavarasan, K and Geethalakshmi, V and Kripa, V and Mohamed, K S (2022) Temperature, salinity and body-size influences depuration of heavy metals in commercially important edible bivalve molluscs of India. Chemosphere, 307. pp. 1-10. ISSN 0045-6535