具有商业价值的中上层和底栖鱼类纤维性微塑料和天然微纤维的研究和特性。

IF 1.8 Q3 FOOD SCIENCE & TECHNOLOGY Italian Journal of Food Safety Pub Date : 2023-03-08 DOI:10.4081/ijfs.2023.11032
Serena Santonicola, Michela Volgare, Emilia Di Pace, Raffaelina Mercogliano, Mariacristina Cocca, Gennaro Raimo, Giampaolo Colavita
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引用次数: 1

摘要

对地中海两种重要的商业鱼类Engraulis engrasicolus和Mullus barbatus摄入合成微纤维(海洋环境中最普遍的微塑料类型)和天然纤维进行了评估。用10%氢氧化钾溶液从鱼的胃肠道中分离出微纤维。对于微纤维的表征,使用光学显微镜评估特定的形态特征,并结合对分离颗粒亚样品的傅里叶变换红外(FTIR)分析,进行了应用。初步结果表明,欧洲凤尾鱼和红鲻鱼的微纤维含量分别为53%和60%。凤尾鱼样本中平均检测到6.9个微纤维/个体,而红鲻鱼样本中平均检测到9.2个微纤维/个体。这两个物种的纤维最常见的颜色是黑色、蓝色和透明。通过对纤维的视觉表征,可以将40%的物品归类为合成微纤维。FTIR光谱证实了纤维形态的视觉分类。微纤维由不同类型的聚合物制成,以纤维素、棉花和聚酯为代表。这些发现证实了纤维性微塑料的广泛分布,天然微纤维可能影响远洋和深海营养网。尽管鱼类中存在的微纤维对人类健康构成潜在风险,但由于方法学问题,关于商业海洋鱼类吸收微纤维的研究文献很少。光谱技术证实的视觉表征可能有助于区分合成纤维和天然纤维,是评估重要商业鱼类纤维微塑料污染的一种快速简便的方法。
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Research and characterization of fibrous microplastics and natural microfibers in pelagic and benthic fish species of commercial interest.

The ingestion of synthetic microfibers, the most prevalent type of microplastics in marine environments, and natural fibers was assessed in Engraulis engrasicolus and Mullus barbatus, two commercially important fish species in the Mediterranean Sea. Microfibers were isolated from the fish gastrointestinal tract using a 10% potassium hydroxide solution. For the microfiber characterization, the evaluation of specific morphological features using a light microscope, coupled with the Fourier-transform infrared (FTIR) analysis of a subsample of isolated particles, was applied. The preliminary results showed the occurrence of microfibers in 53 and 60% of European anchovy and Red mullet, respectively. A mean of 6.9 microfibers/individual was detected in anchovies, while on average Red mullet samples contained 9.2 microfibers/individual. The most common colors of fibers in both species were black, blue, and transparent. Visual characterization of fibers allowed the classification of 40% of the items as synthetic microfibers. FTIR spectroscopy confirmed the visual classification by fiber morphology. Microfibers were made of different typologies of polymers, represented by cellulose, cotton, and polyester. These findings confirm as the wide distribution of fibrous microplastics, and natural microfibers may impact both pelagic and deep-sea trophic webs. Despite the presence of microfibers in fish species poses a potential risk to human health, the literature is scarce regarding studies on the uptake by commercial marine fish mostly due to methodological issues. The visual characterization, corroborated by spectroscopic techniques, may be useful to differentiate synthetic and natural fibers, representing a fast and easy method to assess fibrous microplastic pollution in commercially important fish species.

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来源期刊
Italian Journal of Food Safety
Italian Journal of Food Safety FOOD SCIENCE & TECHNOLOGY-
CiteScore
2.50
自引率
0.00%
发文量
37
审稿时长
10 weeks
期刊介绍: The Journal of Food Safety (IJFS) is the official journal of the Italian Association of Veterinary Food Hygienists (AIVI). The Journal addresses veterinary food hygienists, specialists in the food industry and experts offering technical support and advice on food of animal origin. The Journal of Food Safety publishes original research papers concerning food safety and hygiene, animal health, zoonoses and food safety, food safety economics. Reviews, editorials, technical reports, brief notes, conference proceedings, letters to the Editor, book reviews are also welcome. Every article published in the Journal will be peer-reviewed by experts in the field and selected by members of the editorial board. The publication of manuscripts is subject to the approval of the Editor who has knowledge of the field discussed in the manuscript in accordance with the principles of Peer Review; referees will be selected from the Editorial Board or among qualified scientists of the international scientific community. Articles must be written in English and must adhere to the guidelines and details contained in the Instructions to Authors.
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