Microplastics in the edible tissues of shellfishes sold for human consumption

Daniel, Damaris Benny; Ashraf, P. Muhamed; Thomas, Sujitha; Thomson, Kaleekal

doi:10.1016/j.chemosphere.2020.128554

Cited by 137 publications

(58 citation statements)

References 43 publications

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“…Their chemical composition comprising polymeric substances and additives cause toxic effects to living beings, and acts as adsorbent for adsorbing other organic pollutants based on their surface functional groups. The increased surface area of the microplastics can act as an anchorage support for the microorganisms to adhere to, and they colonize or form biofilms over the microplastic surface (Daniel et al 2021).…”

Section: Occurrence Of Microplastics In Environmental Samplesmentioning

confidence: 99%

“…Transmission to humans through sea aquaculture products is one of the possible ways, by which, humans get exposed to microplastics. As shellfishes such as crustaceans and cephalopods are majorly taken during seafoods, Daniel et al 2021 checked for the presence of microplastics in tissues of shell fishes in Kerala (Daniel et al 2021). While detecting a total of 180 samples of shellfishes, 2 out of 4 samples had microplastics in their edible tissues, and proved that consuming them may increase the load of microplastics within the human body, paving a way for bioaccumulation in future.…”

Section: Occurrence Of Microplastics In Environmental Samplesmentioning

confidence: 99%

“…Attenuated Total Reflection (ATR) FTIR spectroscopy, an advanced spectroscopic technique was found to be an effective detection technique for polymeric detection in microplastics, but their higher cost of detection hindered their application (Vidyasakar et al 2018;Utami et al 2021). In Micro-FTIR techniques, an optical microscope was combined with an FTIR spectroscopy, providing a good detection of even the smallest sizes of microplastics present in the samples (Daniel et al 2021).…”

Section: Analytical Techniques For the Detection Of Microplasticsmentioning

confidence: 99%

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Microplastics in mangroves and coral reef ecosystems: a review

2021

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Microplastic pollution has recently been identified as a major issue for the health of ecosystems. Microplastics have typically sizes of less than 5 mm and occur in various forms, such as pellets, fibres, fragments, films, and granules. Mangroves and coral reefs are sensitive and restricted ecosystems that provide free ecological services such as coastal protection, maintaining natural cycles, hotspots of biodiversity and economically valuable goods. However, urbanization and industrial activities have started contaminating even these preserved ecosystems. Here we review sources, occurrence, and toxicity of microplastics in the trophic levels of mangrove and coral reef ecosystems. We present detection methods, such as microscopic identification and spectroscopy. We discuss mitigating measures that prevent the entry of microplastics into the marine environment.

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Section: Occurrence Of Microplastics In Environmental Samplesmentioning

confidence: 99%

Section: Occurrence Of Microplastics In Environmental Samplesmentioning

confidence: 99%

Section: Analytical Techniques For the Detection Of Microplasticsmentioning

confidence: 99%

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Microplastics in mangroves and coral reef ecosystems: a review

2021

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“…However, the types of samples collected for MP analysis varied from study to study like, for salt sample, direct collection from the salt pans was done in one study (Selvam et al 2020b ) while majority of other researchers preferred purchasing commercial salt samples from the market or salt manufacturing unit (Sathish et al 2020a ; Sivagami et al 2020 ; Seth and Shrivastav 2020). Sea food sampling involved a collection of organisms directly from their natural habitats (Daniel et al 2021 , 2020 ; Dowarah et al 2020 ). On the other hand, for drinking water analysis, packaged bottles were procured from the markets.…”

Section: Microplastics In Human Consumablesmentioning

confidence: 99%

Microplastics as contaminants in Indian environment: a review

Vaid

Mehra

Gupta

2021

Environ Sci Pollut Res

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The increased production and consumption scale of plastic items has led to the generation of microplastics (MPs), an emerging class of contaminants, in our environment. MPs are plastic particles less than 5 mm in size and could originate due to primary and secondary sources. The primary ones are generated as such in the MP size range while the secondary MPs are a result of fragmentation of larger plastic particles which eventually enters the aquatic, terrestrial and atmospheric environments. The increasing concern of MP pollution in every compartment of our environment is being globally explored, with relatively fewer studies in India. Among the total studies published on MP prevalence in the Indian environments, marine systems have received significantly higher attention compared to the other compartments like freshwater, atmosphere, terrestrial and human consumables. This review article is an effort to present current understanding of MP pollution in aquatic systems, terrestrial systems, atmosphere and human consumables of India by reviewing available scientific literature. Along with this, the review also focuses on identification of the gap areas in current knowledge and highlights way forward for future research. This would further help in meeting the goals of this emergent pollutant management.

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“…The status of MPs in the oceans has been studied but has always been underestimated [12]. MPs are often eaten by mistake by small commercial seafood and then transfer to human tables through the food chain [8,13]. A study of farmed oysters off the coast of China found that MPs were detected in 86% of the oysters sampled, with an average level of 0.62 particles/g [14].…”

Section: Introductionmentioning

confidence: 99%

Nanoplastics induce more severe apoptosis through mitochondrial damage in Caco-2 cells compared to sub-micron plastics

Zhang

et al. 2022

Preprint

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BackgroundSmall plastic particles such sub-micron- (1μm-100nm) and nanoplastics (<100nm) derived from the environment can enter the human gastrointestinal tract through the food chain. In addition, MPs adsorbed with heavy metals are synergistically toxic to humans. Though the cytotoxicity of different sizes of polystyrene (PS) has been studied, the toxicity study of small sizes PS such as 20 nm on intestinal cells is still utterly limited.ResultsIn the present study, the toxicity of 20 nm and 200 nm PS (PS20, PS200) on Caco-2 cells was investigated. PS20 could disrupt cell membrane integrity at a concentration of 80 μg/mL. The images of laser scanning-confocal illustrated that cell tend to uptake more PS20 than PS200 and those particles were localized in lysosomes and mitochondria. Moreover, the loss of mitochondrial membrane potential of PS20 was more severe than that of PS200, which may account for the significant increase in reactive oxygen species (ROS) levels in the PS20-treated group. Furthermore, PS20 induced cell apoptosis. Moreover, PS enhanced the cytotoxicity of Methylmercury (MeHg). Overall, this study demonstrates that PS had a size- and concentration-dependent cytotoxic effect on the intestine and an enhanced cytotoxic effect on MeHg.ConclusionsBoth sub-micron and NPs could enter Caco-2 cells. NPS induced apoptosis by inducing mitochondrial damage and was significantly more toxic to cells than sub-micron PS. Both sizes of PS used in the experiments have a synergistic effect on MeHg-induced cytotoxicity. In conclusion, our study demonstrated the strong cytotoxicity of NPs and synergistic toxicity with heavy metals, providing a reference for the environmental toxicity of nanoscale plastics.

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Microplastics in the edible tissues of shellfishes sold for human consumption

Cited by 137 publications

References 43 publications

Microplastics in mangroves and coral reef ecosystems: a review

Microplastics in mangroves and coral reef ecosystems: a review

Microplastics as contaminants in Indian environment: a review

Nanoplastics induce more severe apoptosis through mitochondrial damage in Caco-2 cells compared to sub-micron plastics

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