Quick and reliable identification of country of origin using Stable Isotope Reference analysis

该项目将使用稳定同位素参考分析对原产国食品标签进行鉴定。Longhand Data （LHD）在该领域拥有丰富的经验，为养猪业（BPEX）开发了稳定同位素参考分析（SIRA）数据库（db）。新项目将比较猪和家禽样本的SIRA特征，并建立一个新的家禽SIRA数据库。这种跨物种的使用是创新的。LHD将从英国的生产商那里收集鸡蛋和禽肉样本。SIRA的实验室工作将由分包商承担。LHD有必要的结构，以便随后利用该技术。英国和世界对原产地标签认证的需求日益增长，尤其是在欧盟禁止笼蛋生产的立法零星实施的情况下，一些欧盟国家在用更有利于福利的设计取代电池外壳方面的投资比其他国家更多。该技术使用分析方法将零售产品（例如鸡蛋或禽肉）的SIRA特征与已知样品的SIRA特征进行比较。后续纸质可追溯性审核只需要应用于那些与数据库不匹配的样品。在其他物种中，人们发现现有的可追溯性流程不容易或根本无法确定产品来自哪个农场或甚至是当地。因此，SIRA成为验证起源的更可靠的方法；它也更便宜，因为只有与数据库不匹配的样本才需要进行纸质审计。

The project will use Stable Isotope Reference Analysis to authenticate Country of Origin food labelling. Longhand Data (LHD) have previous experience in this field having developed a Stable Isotope Reference Analysis (SIRA) database (db) for the pig sector (BPEX). The new project will compare the SIRA signature of pig and poultry samples and establish a new SIRA database in poultry. This cross-species use is innovative and novel. LHD will collect egg and poultry meat samples from producers within the UK. The SIRA laboratory work will be undertaken by a sub-contractor. LHD have the necessary structures in place to subsequently exploit the technology. There is a growing UK and world demand for authentication of country of origin labelling, particularly relevant as legislation to ban caged-egg production in the EU has been sporadically implemented - with some EU countries investing more that others in replacing battery housing with more welfare friendly designs. The technology uses analysis methods to compare SIRA signatures of retail products, for example eggs or poultry meat, with SIRA signatures of known samples. Follow-up paper traceability audits need only be applied for those samples that do not match the database. In other species it has been found that existing traceability processes do not easily, or at all, identify which farm or even local area, products originate from. SIRA therefore becomes a much more robust method of validating origin; it is also cheaper as only samples that do not match the database need be followed-up with a paper audit.