Department of S.T.A.A.M., University of Molise, I-86100 Campobasso, Italy.
J Agric Food Chem. 2009 Dec 23;57(24):11550-6. doi: 10.1021/jf902426b.
A (1)H NMR analytical protocol for the detection of refined hazelnut oils in admixtures with refined olive oils is reported according to ISO format. The main purpose of this research activity is to suggest a novel analytical methodology easily usable by operators with a basic knowledge of NMR spectroscopy. The protocol, developed on 92 oil samples of different origins within the European MEDEO project, is based on (1)H NMR measurements combined with a suitable statistical analysis. It was developed using a 600 MHz instrument and was tested by two independent laboratories on 600 MHz spectrometers, allowing detection down to 10% adulteration of olive oils with refined hazelnut oils. Finally, the potential and limitations of the protocol applied on spectrometers operating at different magnetic fields, that is, at the proton frequencies of 500 and 400 MHz, were investigated.
本研究报告了一种根据 ISO 格式检测精制榛果油与精制橄榄油混合物的 1H NMR 分析方案。该研究活动的主要目的是建议一种新的分析方法，供具有基本 NMR 光谱知识的操作人员使用。该方案是在欧洲 MEDEO 项目的 92 种不同来源的油样的基础上开发的，基于 1H NMR 测量和适当的统计分析。它是使用 600 MHz 仪器开发的，并由两个独立的实验室在 600 MHz 光谱仪上进行了测试，可检测到橄榄油中混入 10%的精制榛果油。最后，研究了该方案在磁场不同的光谱仪（即质子频率为 500 和 400 MHz）上的应用潜力和局限性。
