Assessing Toxic Elemental Concentrations
in Marine Fish Trachurus capensis (Cape Horse
Mackerel) and Implications for Public Health

Debipersadh, Sanjeev; Selvarajan, Ramganesh; Sibanda, Timothy; Naidoo, Richard

doi:10.15244/pjoes/75965

Cited by 4 publications

References 22 publications

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Investigating toxic metal levels in popular edible fishes from the South Durban basin: implications for public health and food security

Debipersadh

Sibanda

Selvarajan

et al. 2018

Environ Monit Assess

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Contamination of the ocean by heavy metals may have ecosystem-wide implications because they are toxic even if present in trace levels, and the relative ease of their bioaccumulation by marine organisms may affect human health, primarily through consumption of contaminated fish. We evaluated metal concentrations in six different popular edible fish species and estimated the potential health risks from consumption of contaminated fish. There was no correlation between fish length and average metal accumulation although the fish species tended to accumulate significantly more Al and Zn (P < 0.05) than any of the other metals. Significantly higher Mn concentrations were found in fish gills compared to other body parts in all fish species. Bronze seabream, Catface rockcod, and Slinger seabream had significantly higher mean Cr concentration in the liver than in either the tissues or gills. The highest concentration of Zn in fleshy tissue was in Horse mackerel (56.71 μg g) followed by Bronze seabream (31.07 μg g). Al levels ranged from 5.6 μg g in Atlantic mackerel to 35.04 μg g in Horse mackerel tissue while Cu and Cr concentrations were highest in the tissues of Horse mackerel (6.83 and 1.81 μg g, respectively) followed by Santer seabream (3.15; 1.09 μg g) and Bronze seabream (3.09; 1.30 μg g), respectively. The highest tissue concentration of Mn was detected in Bronze seabream (8.23 μg g) followed by Catface rockcod (6.05 μg g) and Slinger seabream (5.21 μg g) while Pb concentrations ranged from a high of 8.44 μg g in Horse mackerel to 1.09 μg g in Catface rockcod. However, the estimated potential health risks from fish consumption as determined by the target hazard quotient (THQ) and hazard index (HI) were significantly lower than 1, implying that metals were not present in sufficiently high quantities to be of any health and/or food and security concern in the studied fishes.

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Investigating toxic metal levels in popular edible fishes from the South Durban basin: implications for public health and food security

Debipersadh

Sibanda

Selvarajan

et al. 2018

Environ Monit Assess

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Edible Fish Species as Bioaccumulators and Bioindicators of Heavy Metal Pollution in the Durban Basin, South Africa

Ogola,

Debipersadh,

Odhiambo Achieng

et al. 2024

Fish Species in Environmental Risk Assessment Strategies

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Seafood consumption in the Durban basin faces a hidden threat: heavy metal (HM) contamination in fish. This chapter unveils the intricate interplay of dietary preferences and specific physiological traits that influence the distribution of HM in edible fish within the Durban basin. It elucidates the divergent capacities of fish gills, liver and muscles in accumulating different HMs, with certain species exceeding both South African and international regulatory limits. This revelation underscores the urgent need for comprehensive monitoring and effective management strategies. Furthermore, the chapter introduces the maasbanker or Atlantic horse mackerel Trachurus trachurus (Carangiformes, Carangidae) and the slinger seabream Chrysoblephus puniceus (Spariformes, Sparidae) as promising bioindicators for moderate HM pollution, underlining the importance of species-specific considerations for accurate monitoring. Finally, avenues for future research are identified, including longitudinal studies on HM accumulation, comparative analyses of bioindicators and broader ecosystem health assessments.

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Scaling New Depths: Innovations in Fish Collagen Extraction and Biomedical Frontiers Explored

Chandrasekaran,

Dakshinamoorthi

et al. 2024

Biosci., Biotech. Res. Asia

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Collagen is a fibrous protein commonly found in the bodies of human and other animals. It is referred to be the most abundant protein which comprises 30% of animal’s overall protein. It is broadly used in diverse applications such as food, pharmaceutical, biomaterials, cosmetics, and biomedical industries. Fish waste is one of the cost-effective sources of collagen. The increasing adoption of marine-based and freshwater-based collagen is driven by their distinctive properties, which include advantages over mammalian-based collagen. These advantages encompass the absence of disease transmission risks, freedom from religious restrictions, cost-effective production, biocompatibility, and enhanced absorption within the human biological system. This review provides an overview of recent research regarding the extraction of collagen from marine and freshwater sources, with a specific focus on fish by-products. It encompasses subjects including the primary sources of fish collagen, pretreatment of fish materials, extraction techniques, collagen characterization, and its wide-ranging applications. More particularly, the study focuses at the procedures used to extract fish collagen, with an emphasis on isolating acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC). Likewise, the fish derived collagen’s application in biomedical engineering such as drug delivery systems, tissue engineering, therapeutic applications and cosmetic industry is summarized.

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Assessing Toxic Elemental Concentrations in Marine Fish Trachurus capensis (Cape Horse Mackerel) and Implications for Public Health

Cited by 4 publications

References 22 publications

Investigating toxic metal levels in popular edible fishes from the South Durban basin: implications for public health and food security

Investigating toxic metal levels in popular edible fishes from the South Durban basin: implications for public health and food security

Edible Fish Species as Bioaccumulators and Bioindicators of Heavy Metal Pollution in the Durban Basin, South Africa

Scaling New Depths: Innovations in Fish Collagen Extraction and Biomedical Frontiers Explored

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