Meat and dairy products derived from grassland carry premium values and sensory and nutritional qualities that aroused much interest for authentication methods to guarantee grassland origin claims. This article reviews the current state of knowledge on the authentication of meat and dairy of grassland origin from food analysis in both cattle and sheep. A range of methods alone or combined, involving analysis of elemental or molecular constituents of food product and fingerprinting profiling combined with chemometrics, have been developed and proved useful to differentiate contrasted feeding regimes and authenticate grass-fed meat and dairy. Their robustness and discriminatory reliability in more complex feeding conditions, such as in the case of dietary switches or when grass only makes up part of the animal's diet, are under active investigation. Our review highlights the possibilities and limitations of these methods, the latter being chiefly posed by variations in the quantity, characteristics and composition of grassland feedstuffs consumed by animals, which are nevertheless inherent to grassland-based production systems, variations in animal responses within and across breeds, and difficulties in detecting the consumption of non-grass feedstuffs by the animal. It also highlights a number of issues for consideration, points of caution and caveats in applying these methods. Scientists agree that much of the research carried out so far has been a 'proof of concept' type and that efforts should be made in the future to develop more databases to help gain genericity and robustness.

中文翻译：

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评论：牛羊草饲肉类和奶制品的认证。


来自草原的肉类和乳制品具有优质的价值以及感官和营养品质，这引起了人们对保证草原原产地声明的认证方法的极大兴趣。本文回顾了通过牛和羊的食品分析来鉴定草原肉类和奶制品的知识现状。已经开发出一系列单独或组合的方法，包括食品的元素或分子成分分析以及指纹图谱与化学计量学相结合，并被证明可用于区分对比喂养方式和鉴定草饲肉类和奶制品。它们在更复杂的饲养条件下的鲁棒性和辨别可靠性，例如在饮食转换的情况下或当草仅构成动物饮食的一部分时，正在积极研究中。我们的综述强调了这些方法的可能性和局限性，后者主要是由动物消耗的草原饲料的数量、特征和成分的变化造成的，但这些变化是基于草原的生产系统所固有的，动物反应的内部和外部的变化品种，以及检测动物消耗非草饲料的困难。它还强调了应用这些方法时需要考虑的一些问题、注意事项和注意事项。科学家们一致认为，迄今为止进行的大部分研究都是“概念验证”类型，未来应努力开发更多数据库，以帮助获得通用性和稳健性。