| 橙汁中总糖和果肉的δ13C测定及应用 |
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| 引用本文： | 钟其顶,王道兵,郑淼,仇凯,武竹英,熊正河,黄占斌.橙汁中总糖和果肉的δ13C测定及应用[J].质谱学报,2014,35(4):361-366. |
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| 作者姓名： | 钟其顶 王道兵 郑淼 仇凯 武竹英 熊正河 黄占斌 |
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| 作者单位： | 1. 中国食品发酵工业研究院，北京100027；2. 全国食品发酵标准化中心，北京100027；3. 中国矿业大学（北京）化学与环境工程学院，北京100083 |
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| 基金项目： | 科技部国际合作项目(2011DFA33270);科技部支撑计划项目(2012BAK17B11);质检总局公益项目(201210104)资助 |
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| 摘 要： | 稳定碳同位素分析是食品质量鉴别和产地溯源的有效手段。本工作结合分离技术，建立了元素分析-稳定同位素比值质谱（EA-IRMS）测定橙汁中总糖和果肉δ13C的方法，并研究了天然橙汁与模拟造假橙汁中总糖和果肉的碳同位素特征差异。实验结果表明，本方法不会导致同位素分馏，且标准偏差仅为0.1‰；初步研究证明，橙汁总糖与果肉的δ13C相近，而与甘蔗糖的δ13C差异明显，因此，以橙汁果肉作为内标物质鉴别橙汁中的C4植物糖是可行的。
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| 关 键 词： | 元素分析-稳定同位素比值质谱（EA-IRMS） 橙汁 总糖 果肉 &delta 13C |
Determination and Application of the Carbon-13 Content of Sugar and Pulp from Orange Juice |
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| ZHONG Qi-ding,WANG Dao-bing,ZHENG Miao,QIU Kai,WU Zhu-ying,XIONG Zheng-he,HUANG Zhan-bin.Determination and Application of the Carbon-13 Content of Sugar and Pulp from Orange Juice[J].Journal of Chinese Mass Spectrometry Society,2014,35(4):361-366. |
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| Authors: | ZHONG Qi-ding WANG Dao-bing ZHENG Miao QIU Kai WU Zhu-ying XIONG Zheng-he HUANG Zhan-bin |
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| Affiliation: | 1. China National Institute of Food and Fermentation Industries， Beijing 100027, China；2. National Standardization Center of Food&Fermentation Industry, Beijing 100027, China；3. School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China |
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| Abstract: | Stable carbon isotope analysis is an effective method for identifying the botanic origin of plant product. In this paper, δ13C of sugar and pulp of orange juice were determined by elementar analyzer-isotope ratio mass spectrometer(EA-IRMS)， combined with separation technology. The isotope difference between natural and laboratory imitated orange juice was presented. Results show that isotope fractionation is not observed， while sample preparation and the standard deviation are merely 0.1‰. The δ13C of pulp is identical to that sugar in the same juice and different with cane sugar significantly, which can be used in the detection of C4 sugar in orange juice. |
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| Keywords: | elementar analyzer-isotope ratio mass spectrometer (EA-IRMS) orange juice sugar pulp &delta 13C |
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