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首页> 外文期刊>Journal of Archaeological Science >Dental calculus is not equivalent to bone collagen for isotope analysis: a comparison between carbon and nitrogen stable isotope analysis of bulk dental calculus, bone and dentine collagen from same individuals from the Medieval site of El Raval (Alicante, Spain)
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Dental calculus is not equivalent to bone collagen for isotope analysis: a comparison between carbon and nitrogen stable isotope analysis of bulk dental calculus, bone and dentine collagen from same individuals from the Medieval site of El Raval (Alicante, Spain)

机译：牙结石在同位素分析方面不等同于骨胶原蛋白：对来自El Raval中世纪遗址（西班牙阿利坎特）的同一个体的大块牙结石，骨骼和牙本质胶原蛋白进行碳和氮稳定同位素分析的比较

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Palaeodietary reconstruction using the carbon and nitrogen isotope values of bone and dentine collagen is a well-established method and the biochemical processes involved are well known. Researchers have recently explored using bulk samples of dental calculus as a substitute for bone and dentine collagen in dietary analyses, because calculus can be sampled without causing damage to the teeth, and may be useful in situations where more destructive analyses are not possible, or where collagen is poorly preserved. Several questions remain about the use of bulk calculus as a source of carbon and nitrogen isotope data, however. It is not yet clear how much of an individual's life span dental calculus represents, what portions of the diet it records, and how diagenesis effects the carbon and nitrogen isotope values of this material. Most importantly, there-have been no comparative studies of collagen and calculus isotope values, which are necessary to establish the value of bulk calculus as a source of accurate isotope values. Here we report the comparison of carbon and nitrogen stable isotope analyses of bulk calculus to those from bone and dentine collagen. These analyses have been performed on individuals from the El Raval Mudejar Medieval Cemetery (Eastern Iberia, 15th century AD.). Although calculus isotope values may be broadly similar to expected values at the population level, we report here no correlation between collagen and bulk dental calculus values at the individual level. As a result, we recommend that carbon and nitrogen analysis on bulk dental calculus should only be used as a last resource archaeological dietary marker, if at all. (C) 2014 Elsevier Ltd. All rights reserved.
机译：利用骨骼和牙本质胶原的碳和氮同位素值进行古生物学重建是一种公认​​的方法，涉及的生化过程是众所周知的。研究人员最近在饮食分析中探索了使用牙结石的大量样本替代骨骼和牙本质胶原的方法，因为可以对牙结石进行采​​样而不会对牙齿造成损害，并且在不可能进行更具破坏性的分析的情况下或胶原蛋白保存不良。但是，关于使用体相演算作为碳和氮同位素数据的来源仍存在一些问题。目前尚不清楚一个人的整个寿命中牙结石代表多少，它记录的饮食中的哪些部分以及成岩作用如何影响该物质的碳和氮同位素值。最重要的是，还没有胶原蛋白和牙结石同位素值的比较研究，这是确定大量牙结石值作为准确同位素值来源所必需的。在这里，我们报告了对大量结石的碳和氮稳定同位素分析与来自骨骼和牙本质胶原的同位素分析的比较。这些分析是对El Raval Mudejar中世纪公墓（东伊比利亚，公元15世纪）的人员进行的。尽管牙结石的同位素值可能与人群水平的预期值大致相似，但我们在此报告的胶原蛋白与个体水平的整体牙结石值之间没有相关性。因此，我们建议对散装牙结石进行碳和氮分析（如果有的话）仅应用作最后的资源考古饮食标记。 （C）2014 Elsevier Ltd.保留所有权利。

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