Department of Environmental Resources and Technology, Austrian Institute of Technology, 2444 Seibersdorf, Austria.
Anal Chim Acta. 2010 Dec 3;682(1-2):77-81. doi: 10.1016/j.aca.2010.09.046.
Ginseng is a health food and traditional medicine highly valued in Asia. Ginseng from certain origins is higher valued than from other origins, so that a reliable method for differentiation of geographical origin is important for the economics of ginseng production. To discriminate between ginseng samples from South Korea and PR China, 29 samples have been analyzed for the isotopic composition of the elements H, C and N. The results showed δ(2)H values between -94 and -79‰, for δ(13)C -27.9 to -23.7‰ and for δ(15)N 1.3-5.4‰ for Chinese ginseng. Korean ginseng gave δ(2)H ratios between -91 and -69‰, δ(13)C ratios between -31.2 and -22.4‰ and δ(15)N ratios between -2.4 and +7‰. Despite the overlap between the values for individual isotopes, a combination of the isotope systems gave a reasonable differentiation between the two geographic origins. Especially the statistically significant difference in δ(2)H ratios facilitated the differentiation between Korean and Chinese ginseng samples.
人参是一种在亚洲备受推崇的保健品和传统药材。某些产地的人参比其他产地的人参更有价值，因此可靠的地理起源区分方法对于人参生产的经济意义重大。为了区分来自韩国和中国的人参样品，对 29 个样本的 H、C 和 N 元素的同位素组成进行了分析。结果表明，中国人参的 δ(2)H 值在-94 到-79‰之间，δ(13)C 值在-27.9 到-23.7‰之间，δ(15)N 值在 1.3-5.4‰之间。韩国人参的 δ(2)H 比值在-91 到-69‰之间，δ(13)C 比值在-31.2 到-22.4‰之间，δ(15)N 比值在-2.4 到+7‰之间。尽管个别同位素的值存在重叠，但同位素系统的组合可以合理地区分两个地理起源。特别是 δ(2)H 比值的统计学显著差异，有助于区分韩国和中国的人参样品。
