Younis Elsayed M, Abdel-Warith Abdel-Wahab A, Al-Asgah Nasser A, Elthebite Soltan A, Mostafizur Rahman Md
Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
Department of Animal Productions, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, Egypt.
Saudi J Biol Sci. 2021 Mar;28(3):1860-1866. doi: 10.1016/j.sjbs.2020.12.038. Epub 2020 Dec 31.
The study evaluated the nutritional quality and investigated the heavy metals concentration in muscle tissues of five commercially important marine fish species, including brownspotted grouper (Epinephelus chlorostigma), squaretail coralgrouper (Plectropomus areolatus), black pomfret (Parastromateus niger), goldbanded jobfish (Pristipomoides multidens), and blueskin seabream (Polysteganus coeruleopunctatus) from the Red Sea, Jeddah Coast, Saudi Arabia. Significant differences (p < 0.05) were observed in the proximate chemical composition of fish muscles in these species. The highest protein content (17.66 ± 0.58%) was achieved in blueskin seabream while the lowest (15.28 ± 0.46%) was observed in brownspotted grouper. The highest lipid content (2.97 ± 0.45%) was recorded in squaretail coralgrouper while the lowest (1.52 ± 0.26%) was observed in blueskin seabream. Heavy metal concentrations varied significantly within and between fish species under study (p < 0.05). Significant differences in the concentration of heavy metals among fish species were recorded. Results revealed that the bioaccumulation of Cr, Fe, Ni, and Cd in muscles of fish species under study was higher than the standard concentration, but that of Mn, Cu, and Pb were less than the standard concentration recommended in the EU, FAO, and WHO guidelines. In conclusion, these fish species represent a high-quality food source but is unsafe due to the level of certain minerals in their tissues. Results also indicated that the Red Sea environment is contaminated with heavy metals, which was reflected in the tissues of fishes used in this study.
该研究评估了沙特阿拉伯吉达海岸红海的五种具有商业重要性的海洋鱼类肌肉组织的营养质量，并调查了其中的重金属浓度，这五种鱼类包括褐点石斑鱼（Epinephelus chlorostigma）、方尾珊瑚鱼（Plectropomus areolatus）、乌鲳（Parastromateus niger）、金线鱼（Pristipomoides multidens）和蓝鳍笛鲷（Polysteganus coeruleopunctatus）。观察到这些物种的鱼类肌肉的近似化学成分存在显著差异（p < 0.05）。蓝鳍笛鲷的蛋白质含量最高（17.66 ± 0.58%），而褐点石斑鱼的蛋白质含量最低（15.28 ± 0.46%）。方尾珊瑚鱼的脂质含量最高（2.97 ± 0.45%），而蓝鳍笛鲷的脂质含量最低（1.52 ± 0.26%）。在所研究的鱼类物种内部和之间，重金属浓度差异显著（p < 0.05）。记录到鱼类物种之间重金属浓度存在显著差异。结果显示，所研究鱼类物种肌肉中铬、铁、镍和镉的生物累积高于标准浓度，但锰、铜和铅的生物累积低于欧盟、粮农组织和世界卫生组织指南中建议的标准浓度。总之，这些鱼类物种是优质的食物来源，但由于其组织中某些矿物质的含量，食用不安全。结果还表明，红海环境受到重金属污染，这在本研究中所使用的鱼类组织中得到了体现。
