Developing a forensic test for geographic origin of seafood products

开发海鲜产品地理来源的法医测试

• 批准号: 1942513
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1942513
• 关键词: Developing; forensic; test; geographic; origin

The global trade in seafood is worth more than 250 billion dollars annually, providing high quality food to consumers and a valuable source of income and employment across the globe. Sustainable harvesting of wild fish depends on effective management and regulation, but regulation also opens potential for mislabeling and fraud. Seafood is among the most globally traded commodity, and establishing the chain of custody from geographic origin to point of sale (traceability) is a clear desire for retailers and customers. Development of genetic testing for species identity initially established widespread species substitution and mislabeling across the seafood retail network, particularly in small-scale retailers. The geographic origin or provenance of terrestrial food products can be tracked using chemical tools, but to such isotopic techniques have not been extended to seafood. This project, in association with Young's, the UK's largest supplier of seafood products, will establish the feasibility of isotope-based forensic tests to test claims of geographic origin at all points within the retail network.Methodology: Working with the industrial partner, Young's, you will initially identify traded seafood species and fisheries with high risk of spatial mislabeling. You will then bring together all available spatially explicit biogeochemical information including measured and modeled data, to determine the potential for isotopic discrimination between fishery areas associated with the species of concern. You will then build datasets of tissue samples from fish of known origin to characterize chemical fingerprints associated with the identified fishery areas, develop statistical algorithms to classify unknown samples according to geographic origin, and assess the accuracy and precision available using chemical forensic approaches. The main product of this PhD will be a suite of industry-ready, chemical forensic methods to test for geographic provenance, tailored to specific fisheries of interest. Finally you will apply the tools developed to quantify the possible extent of spatial substitution and mislabeling in different sectors of the retail network.

全球海产品贸易每年价值超过2500亿美元，为消费者提供高质量的食品，也是地球仪的宝贵收入和就业来源。野生鱼类的可持续捕捞取决于有效的管理和监管，但监管也可能导致贴错标签和欺诈。海产品是全球交易量最大的商品之一，零售商和消费者显然希望建立从原产地到销售点的监管链（可追溯性）。物种身份基因检测的发展最初在海鲜零售网络中建立了广泛的物种替代和错误标签，特别是在小规模零售商中。陆地食品的地理来源或出处可以用化学工具来追踪，但这种同位素技术还没有扩展到海产品。该项目与英国最大的海产品供应商Young's合作，将建立基于同位素的法医测试的可行性，以测试零售网络中所有点的地理来源声明。方法：与行业合作伙伴Young's合作，您将首先识别具有高空间错误标签风险的交易海产品物种和渔业。然后，您将汇集所有可用的空间明确的生物地球化学信息，包括测量和建模数据，以确定与关注物种相关的渔业区域之间的同位素歧视潜力。然后，您将建立已知来源的鱼类组织样本数据集，以表征与已确定的渔业区域相关的化学指纹，开发统计算法，根据地理来源对未知样本进行分类，并使用化学法医方法评估可用的准确性和精度。这个博士的主要产品将是一套工业就绪的化学法医方法，用于测试地理来源，针对特定的感兴趣的渔业。最后，您将应用开发的工具来量化零售网络不同部门的空间替代和错误标签的可能程度。