Compound-specific amino acid isotopic proxies for detecting freshwater resource consumption

Compound-specific amino acid isotopic proxies for detecting freshwater resource consumption
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用于检测淡水资源消耗的化合物特异性氨基酸同位素代理

DOI:
10.1016/j.jas.2015.08.001
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发表时间:
2015
影响因子:
2.8
通讯作者:
Webb E
Webb E
中科院分区:
地球科学2区
文献类型:
--
作者:
Webb E

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对古食物重建至关重要的是清楚地了解不同陆地(即,C3vs. C4植物)和水生(即,淡水与海洋)资源对人类饮食的影响。然而,有显着的局限性,重建palaeodiet使用散装胶原蛋白稳定同位素组成的地区,不同的饮食资源是可用的能力。最近的研究已经确定,单个氨基酸的碳同位素分析具有相当大的潜力,以阐明膳食蛋白质来源,散装同位素组成不能。我们使用来自拉脱维亚兹韦涅基(公元前8 - 3千年)的人类和动物群遗骸的δ 13 CAA值,测试了几种同位素替代物,重点是区分淡水蛋白质消耗与植物来源和海洋蛋白质消耗。结果表明,Δ 13 CGly-Phe和Δ 13 CVal-Phe指标能够有效区分陆生和水生资源的消耗,而必需δ 13 CAA值与Δ 13 CGly-Phe和Δ 13 CVal-Phe指标之间的关系能够区分所测试的4个蛋白质消耗组。因此,化合物特定的氨基酸碳同位素饮食代理,使饮食和资源开发在过去的理解得到加强,并可以阐明复杂的饮食行为。
Of central importance to palaeodietary reconstruction is a clear understanding of relative contributions of different terrestrial (i.e., C3vs. C4plants) and aquatic (i.e., freshwater vs. marine) resources to human diet. There are, however, significant limitations associated with the ability to reconstruct palaeodiet using bulk collagen stable isotope compositions in regions where diverse dietary resources are available. Recent research has determined that carbon-isotope analysis of individual amino acids has considerable potential to elucidate dietary protein source where bulk isotopic compositions cannot. Usingδ13CAAvalues for human and faunal remains from Zvejnieki, Latvia (8th – 3rd millennia BCE), we test several isotopic proxies focused on distinguishing freshwater protein consumption from both plant-derived and marine protein consumption. We determined that theΔ13CGly-PheandΔ13CVal-Pheproxies can effectively discriminate between terrestrial and aquatic resource consumption, and the relationship between essentialδ13CAAvalues and theΔ13CGly-PheandΔ13CVal-Pheproxies can differentiate among the four protein consumption groups tested here. Compound-specific amino acid carbon-isotope dietary proxies thus enable an enhanced understanding of diet and resource exploitation in the past, and can elucidate complex dietary behaviour.
同位素和转移注意力:对 Milner 等人和 Lidén 等人的评论。
DOI: --
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DOI: --
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期刊:
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“潮湿和野生之后是干燥和驯服”——或者它们是在中石器时代-新石器时代瑞典南部同时发生的吗?
DOI: --
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期刊: Antiquity
影响因子: 1.8
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