Osineye Oluseun, Abiodun-Solanke Ayo Jesutomi, Mangai Elizabeth, Okeke Ebele, Jahnezim Bethel
Fisheries Technology Department, Federal College of Fisheries and Marine Technology, Victoria Island, Lagos, Nigeria.
J Health Pollut. 2020 Dec 7;10(28):201215. doi: 10.5696/2156-9614-10.28.201215. eCollection 2020 Dec.
Wood, a common fueling material for fish smoking in Nigeria, contains polycyclic aromatic hydrocarbons (PAHs) which have been found to be carcinogenic and pose a human health hazard.
The present study investigated the interactions and effects of kiln types on levels of PAHs in smoked fish.
Twenty fresh samples of with an average size of 800 g were eviscerated, washed and salted for smoking. Sixteen (16) of the fish were randomly and equally allotted to each of the two kilns (treatments) and replicated three times in a completely randomized design. Each kiln was loaded and heated up with hard wood charcoal and the effects were evaluated on the resulting smoked fish. The remaining four fish samples were kept under refrigeration (controls). Samples of the smoke-dried fish from each kiln were homogenized using a porcelain mortar and pestle, sieved through a 250-μm sieve, and packaged in labeled airtight containers prior to extraction. Pure extracts from the samples were subjected to gas chromatography.
The results showed that the PAH concentration in non-smoked catfish was 1.0 mg/kg, the PAH concentration in fish samples smoked with a traditional kiln was 2.0 mg/kg, and no PAHs were detected in samples smoked with a mechanical kiln.
The level of PAH contamination of smoked fish is dependent on the type of kiln used, as demonstrated by the differences between fished smoked with traditional and mechanical kilns in the present study.
The authors declare no competing financial interests.
木材是尼日利亚鱼类烟熏常用的燃料，其中含有多环芳烃（PAHs），已被发现具有致癌性，对人类健康构成危害。
本研究调查了窑炉类型对烟熏鱼中多环芳烃水平的相互作用和影响。
选取20个平均大小为800克的新鲜样本，去内脏、清洗并腌制以进行烟熏。将16条鱼随机且平均分配到两个窑炉（处理组）中，每个处理组重复三次，采用完全随机设计。每个窑炉用硬木炭装填并加热，然后评估对所得烟熏鱼的影响。其余4个鱼样本冷藏保存（作为对照）。每个窑炉的烟熏干鱼样本用瓷研钵和研杵研磨均匀，通过250μm筛网筛分，然后装入贴有标签的密封容器中进行提取。样本的纯提取物进行气相色谱分析。
结果表明，未烟熏鲶鱼中的多环芳烃浓度为1.0毫克/千克，用传统窑炉烟熏的鱼样本中多环芳烃浓度为2.0毫克/千克，而用机械窑炉烟熏的样本中未检测到多环芳烃。
本研究表明，烟熏鱼中多环芳烃的污染水平取决于所用窑炉的类型，传统窑炉和机械窑炉烟熏的鱼之间存在差异。
作者声明不存在相互竞争的财务利益。
