Phân tích một số axit béo và sự tích lũy kim loại độc hại trong các mô của ba loài cá được tiêu thụ bởi người dân Thổ Nhĩ Kỳ

Springer Science and Business Media LLC - Tập 24 - Trang 9495-9505 - 2017
Gökçe Kaya1, Semra Türkoğlu1
1Department of Nutrition and Dietetic, Health Sciences Faculty, Firat University, Elazig, Turkey

Tóm tắt

Nồng độ của các kim loại độc hại (Mn, Ni, Hg, Cd, Pb, Cr) trong cơ, da và gan của Mugil cephalus, Mullus barbatus, và Pagellus erythrinus được mua tại các siêu thị lớn ở Elazig, và Mullus barbatus, được đánh bắt trên biển vịnh İskenderun, Thổ Nhĩ Kỳ, đã được phân tích. Các phân tích cơ bản được thực hiện bằng phương pháp quang phổ khối plasma điện từ (ICP-MS) sau khi mẫu được chuẩn bị bằng phương pháp tiêu hóa vi sóng. Nồng độ kim loại trung bình trong các mô khác nhau có sự khác biệt trong khoảng Cd 4–426, Cr 116–4458, Mn 141–24774, Hg 9–471, Pb 96–695, và Ni 68–6581 μg kg−1, tính theo trọng lượng ướt. Sự tích lũy sinh học của kim loại được điều tra trong cơ của các loài cá, nói chung, thấp hơn so với trong gan và da. Phương pháp này đã được xác nhận bằng việc phân tích vật liệu tham chiếu Certified Reference Material (CRM) NCS ZC73016 với các nguyên tố vi lượng từ gà. Ngoài ra, các axit béo trong cơ của ba loài cá đã được phân tích. Theo kết quả từ sắc ký khí (GC) của các axit béo, tỷ lệ axit béo không bão hòa đơn (MUFA) được xác định trong khoảng 23.76 đến 31.97%. Tỷ lệ axit béo không bão hòa đa (PUFA) được tìm thấy trong khoảng 13.67 đến 30.71% và tỷ lệ axit béo bão hòa được xác định trong khoảng 24.06–32.30%. Ở tất cả các loài cá, tỷ lệ axit eicosapentaenoic (EPA) và axit docosahexaenoic (DHA), làm tăng giá trị của các loài cá này, được phát hiện ở mức cao. Những kết quả này cho thấy ba loài cá này là nguồn cung cấp axit béo tốt.

Từ khóa

#kim loại độc hại #tích lũy sinh học #axit béo #sắc ký khí #quang phổ khối plasma điện từ

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