GEOGRAPHICAL VARIATIONS IN THE CARBON ISOTOPE COMPOSITION OF THE DIET AND HAIR IN CONTEMPORARY MAN
GEOGRAPHICAL VARIATIONS IN THE CARBON ISOTOPE COMPOSITION OF THE DIET AND HAIR IN CONTEMPORARY MAN
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DOI：
10.1002/bms.1200090906
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
SCHMIDT, HL
中科院分区：
文献类型：
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作者：
NAKAMURA, K;SCHOELLER, DA;SCHMIDT, HL
研究了人类饮食和人类头发中碳同位素组成的地理差异。采用燃烧质谱法和微分同位素比值质谱法测定了美国芝加哥、日本东京和德国慕尼黑等地常见食品的碳同位素组成。根据计算，美国的膳食蛋白质碳（-18.1 ‰）相对于日本（-21.2 ‰）和德国（-23.6 ‰）的膳食富含13 C。在很大程度上，这些差异反映了美国和日本对玉米喂养的动物产品以及日本海鲜的消费。三个种群的头发碳同位素组成（-16.4、-18.0和-20.4%）与膳食蛋白质的计算值相关，但13 C富集2-3%。胡子的同位素组成的变化被证明是记录在访问各自地区的旅行者的饮食组成的变化。
Geographic variations in the carbon isotope composition of the human diet and human hair were investigated. The carbon isotopic composition of common foodstufls purchased in Chicago, USA, Tokyo, Japan and Munich, FRG, were determined by combustion and differential isotope ratio mass spectrometry. The dietary protein carbon for the United States (−18.1‰) was calculated to be enriched in13C relative to the Japanese (−21.2‰) and the German (−23.6‰) diets. To a large degree, the differences reflected the consumption of corn‐fed animal products in the United States and Japan, as well as seafood in Japan. The carbon isotopic composition of hair (−16.4, −18.0 and −20.4%) for the three respective populations correlated with the calculated values of the dietary protein, but were 2–3% enriched in13C. Changes in the isotopic composition of beard hair were shown to record the changes in dietary composition in travelers visiting the respective regions.