Yazar "Bhuyan, Md Simul" seçeneğine göre listele

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    Assessment of Carbon Sequestration Capacity of Seaweed in Climate Change Mitigation
    (Ios Press, 2022) Bhuyan, Md Simul; Husain, Sk Abid; Chowdhury, Enam; Bat, Levent
    Carbon (C) cycling is being influenced by global climate change, which is altering the primary productivity and the rate at which carbon is fixed, released and stored in vegetation systems on Earth. Carbon sequestration is recognised as the storing of carbon dioxide (CO2) and other kinds of carbon for a long time. A selective atmospheric carbon-based anthropic enrichment causes an environmental catastrophe, which necessitates methods of mitigation. Algal primary production (which includes cyanobacterial algae, microalgal, and macroalgal) is a key pathway for C biosequestration in the ocean. Many scientists and environmental professionals are concerned about the rise in global temperatures and climate change. Increased quantity of carbon that can be absorbed from the atmosphere by exploiting the ability of plants, particularly seaweed, to use CO2 in process of photosynthesis is one of the key solutions being given to prevent the earth's rising temperature at a faster rate. The ability of ocean plants to act as a carbon sink from anthropogenic sources (also recognised as Blue Carbon) has piqued people's interest. Marine primary producers are responsible for at least half of the earth's carbon uptake and up to 71 percent of all C storing. Seaweeds have important roles in the elemental cycles of coastal ecosystems, mostly through the export of organic matter to neighbouring communities and the accumulation of carbon and nutrients in the sediment.
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    Metals in Wild and Cultured Dicentrarchus labrax (Linnaeus, 1758) from Fish Markets in Sinop: Consumer's Health Risk Assessment
    (Springernature, 2022) Bat, Levent; Sahin, Fatih; Bhuyan, Md Simul; Arici, Elif; Oztekin, Aysah
    Concentrations of Cd, Hg, Pb, As, Al, Cu, Fe, and Zn were determined in the muscles of wild and farmed European seabass in Sinop markets between September and December in 2020, using inductively coupled plasma mass spectrometry after microwave digestion. In the study, iron (Fe), zinc (Zn), aluminum (Al), and copper (Cu) were found higher than the other metals both in wild and cultured Dicentrarchus labrax. These are essential elements, but excess amounts act as a poison. Arsenic (As) concentration was higher than cadmium (Cd), mercury (Hg), and lead (Pb) both in wild and cultured D. labrax. The estimated maximum total dietary intakes of these eight metals from both wild and farmed European seabass were below the maximum acceptable daily intake values set by the Turkish Food Codex and European Union Regulation. Results showed that according to metal amounts, consumption of D. labrax had no threat to consumers' health. The target hazard quotient (THQ) revealed that harmful health impacts may not occur. Furthermore, risk index (RI) indicated that there may have a lower risk of developing cancer in the future who have been exposed to Pb and As through fish intake. Although the fish are not overly contaminated, the metal level is rising. Increased amounts of heavy metals in fish in different areas could be due to an increase in farm inflow water, domestic sewage, and a number of other anthropogenic sources, all of which should be looked into further. Precautions should be made to safeguard this fish from metal contamination and to reduce the risk to human health.
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    Trace Element Risk Assessment for the Consumption of Sarda sarda (Bloch, 1793) from the mid-South Black Sea Coastline
    (Springer Int Publ Ag, 2022) Bat, Levent; Oztekin, Aysah; Arici, Elif; Sahin, Fatih; Bhuyan, Md Simul
    This study aims to evaluate the metals (Cd, Hg, Pb, As, Al, Cu, Fe, and Zn) contamination in Sarda sarda (Bloch, 1793) caught in the Sinop region of the Black Sea and the health risk to consumers. These eight metals were measured with an Inductively Coupled Plasma Mass Spectrophotometer (ICP-MS) in the edible tissues of S. sarda sampled during the September-December 2020 fishing season. Statistical analysis revealed that metal accumulation depends on the size. Large fish have been found to accumulate more metals than small fish. The results showed that the element concentrations in edible tissues of all S. sarda of the southern Black Sea were lower than the maximum allowable levels under European and Turkish regulations. The average weekly intake of tested metals per body weight did not exceed the established provisional tolerable weekly intake (PTWI). Target hazard quotient (THQ) and target hazard index (THI) were used to find out the non-carcinogenic health hazards as well as the cancer risk index (RI). The findings indicate that S. sarda specimens from the Black Sea are safe to eat, and the risk of health problems connected with non-carcinogenic effects is still very minimal for infants, children, and adults who consume them on a regular basis.