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标题：Measuring the impact of parchment production on skin collagen stable isotope (δ 13 C and δ 15 N) values
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作者：Sean Doherty ; Michelle M. Alexander ; Jiří Vnouček 等
期刊名称：STAR: Science & Technology of Archaeological Research
电子版ISSN：2054-8923
出版年度：2021
卷号：7
期号：1
页码：1-12
DOI：10.1080/20548923.2020.1868132
出版社：Taylor and Francis Ltd
摘要：Parchment is one of the most abundant resources in archives across the world and is a unique time-sensitive material through which centuries of livestock economies, trade and craft can be explored. We examine the impact of structural and chemical modifications during production to δ 13 C and δ 15 N values in the skin, particularly the removal of cutaneous keratins and lipids and the conversion of amide functional groups into carboxyl groups via alkaline hydrolysis. Through the manufacture of 51 parchment skins (sheep, goat, calf and pig) using both historic and modern manufacturing techniques, we found production resulted in a small enrichment in 13 C (average 0.12‰) and 15 N ( 0.26‰). Our results pave the way for the isotopic analysis of parchment in paleodietary and paleoenvironmental studies for the historic period and establish the acceptable C:N ratios in deamidated collagenous tissues.
关键词：Stable isotope analysis parchment skin