DNA barcoding revealing mislabeling of seafood in European mass caterings
DNA barcoding revealing mislabeling of seafood in European mass caterings
复制标题
DOI：
10.1016/j.foodcont.2018.04.044
复制
发表时间：
2018-10-01
期刊：
影响因子：
6
通讯作者：
Perez-Villareal, Begona
中科院分区：
文献类型：
--
作者：
Angel Pardo, Miguel;Jimenez, Elisa;Perez-Villareal, Begona
海产品是世界上最国际贸易的食品商品之一，也是最容易受到欺诈的食品之一。已经进行了一些研究，对来自零售、餐馆和食品服务网点的样本进行了物种替代测试。这些研究大多集中在特定的物种，特定类型的出口或局限于某些地理位置。本文中提出的研究是第一次大规模尝试研究整个欧洲大规模餐饮（HoReCa）部门的鱼类标签错误率。在23个欧洲国家的180家大众餐饮店共收集了283份样本。DNA条形码显示，26%的样品贴错了标签，31%的门店出售贴错标签的海鲜。贴错标签率最高的是西班牙、冰岛、芬兰和德国，近50%的受访门店提供贴错标签的海鲜。相反，瑞典、瑞士和斯洛伐克没有发现标签错误。错标率最高的鱼类为黑石斑鱼、鲳鱼、梭鲈、比目鱼、蓝鳍金枪鱼和黄鳍金枪鱼。对于欧洲其他重要的鱼类，如鳕鱼、鳕鱼、黑线鳕和旗鱼，错误标签率在14%到33%之间。研究结果表明，大多数贴错标签的鱼都是更便宜的鱼，比如巴沙鱼经常取代其他鱼类，被贴上更昂贵的标签，这表明贴错标签的经济动机。(C) 2018 Elsevier Ltd.版权所有。
Seafood is amongst the most internationally traded food commodities worldwide and it is one of the food groups most likely to be subject to fraud. A number of studies have been conducted where samples from retail-, restaurant- and food service outlets have been tested for species substitution. These studies have mostly focused on specific species, particular types of outlets or confined to some geographical location. The study presented in this paper is the first large-scale attempt to study the rate of fish mislabeling in mass caterer (HoReCa) sector across Europe. A total of 283 samples were collected in 180 mass caterer outlets in 23 European countries. DNA barcoding revealed that 26% of the samples were mislabeled and that 31% of the outlets sold mislabeled seafood. The highest mislabeling rate was observed in Spain, Iceland, Finland and Germany, where close to 50% of the outlets sampled offered mislabeled seafood. Conversely, there was no mislabeling detected in Sweden, Switzerland and Slovakia. The species with the highest mislabeling rates were dusky grouper, butterfish, pike perch, sole, bluefin tuna and yellowfin tuna. In the case of other important fish species in Europe such as hake, cod, haddock and swordfish, mislabeling rates ranged between 14 and 33%. The results of the study show that the majority of the mislabelings are with cheaper fish, such as the presence of Pangasius commonly substituting other species, being labeled as more expensive ones, suggesting economic motivation for mislabelling. (C) 2018 Elsevier Ltd. All rights reserved.