Paraschos Sotirios, Magiatis Prokopios, Gikas Evagelos, Smyrnioudis Ilias, Skaltsounis Alexios-Leandros
Laboratory of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimiopolis Zografou, GR 15771 Athens, Greece.
Laboratory of Pharmaceutical Analysis, Faculty of Pharmacy, University of Athens, Panepistimiopolis Zografou, GR 15771 Athens, Greece.
Fitoterapia. 2016 Oct;114:12-17. doi: 10.1016/j.fitote.2016.08.003. Epub 2016 Aug 8.
The determination of mastic oil profile, with emphasis on its chiral characteristics, could serve as a method for detecting adulteration in products found in the market with a claim of mastic oil content aiming towards protecting it from counterfeiting. Furthermore the evaluation of the raw material is crucial, as the profile is potentially affected by factors as mastic origin and storage time. Thus 45 authentic mastic oil samples were analyzed by GC-MS employing a chiral column and content limits for all major constituents were determined. The chiral GC-MS analysis proved that selected concentration ratios between these constituents, namely those of (-)/(+)-α-pinene (≤1:100) and (-)-α-pinene/myrcene (1.9:100-11:100) could serve as markers for the determination of mastic oil authenticity. Employing this methodology, the analysis of 25 mastic oils contained in cosmetic and dietary products, as well as an artificial mastic oil sample, exhibited several differentiations that could indicate adulteration either with artificial essential oils or volatile compounds, or the use of aged mastic oil.
乳香精油成分的测定，尤其是其手性特征的测定，可作为一种检测市场上声称含有乳香精油的产品是否掺假的方法，旨在防止其被假冒。此外，对原材料的评估至关重要，因为其成分可能受到乳香来源和储存时间等因素的影响。因此，采用手性柱通过气相色谱-质谱联用仪（GC-MS）对45个纯正乳香精油样品进行了分析，并确定了所有主要成分的含量限值。手性GC-MS分析证明，这些成分之间选定的浓度比，即（-）/（+）-α-蒎烯（≤1:100）和（-）-α-蒎烯/月桂烯（1.9:100 - 11:100）的浓度比，可作为判定乳香精油真伪的标志物。采用这种方法，对化妆品和膳食产品中含有的25种乳香精油以及一个人工乳香精油样品进行分析，发现了一些差异，这些差异可能表明存在用人工精油或挥发性化合物掺假，或使用了陈化乳香精油的情况。
