B-HIVE: Beeswax hydrogen isotopes as validation of environment, part II. Compound-specific hydrogen isotope analysis

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• 作者：Brett J. Tipple^a ; ^b ; ^{brett@isoforensics.com} ; Lesley A. Chesson^a ; ^b ; Brad R. Erkkila^a ; Thure E. Cerling^a ; ^b ; ^c ; James R. Ehleringer^a ; ^b
• 关键词：Compound-specific hydrogen isotope analysis ; Beeswax ; Honey varietal ; Region-of-origin ; GIS
• 刊名：Food Chemistry
• 出版年：2012
• 期刊代码：48_03088146
• 类别：abs
• 出版时间：1 September, 2012
• 卷：134
• 期：1
• 页码：494-501
• 文件大小：575 K

摘要

Hydrogen isotope analysis has proven a useful tool to understand region-of-origin of food items and biologic materials. Here its application is extended to compound-specific hydrogen isotope analysis of authentic Apis mellifera beeswax and normal-alkanes in order to elicit geographic information. We found A. mellifera produced a characteristic distribution of hydrocarbons that was present in both lipid extracts from beeswax and liquid honey. We observed significant correlations between hydrogen (未²H) isotope values of beeswax-extracted n-alkanes and both mean annual precipitation and tap water 未²H values. These data suggest the geographical variation in water 未²H values was reflected in beeswax n-alkane 未²H values while isotopic variation was likely related to local environment as potentially influenced by plant varietal. Further, extraction of n-alkanes from liquid honey is shown to be a viable method to expand compound-specific isotope analysis to liquid honeys.