Porous Solids Group, Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678-Nicosia, Cyprus.
J Food Sci. 2011 Apr;76(3):C420-7. doi: 10.1111/j.1750-3841.2011.02048.x. Epub 2011 Mar 4.
FT-IR spectra of 65 sweet wines produced in Cyprus and other countries were determined, in order to study the authenticity and uniqueness of the Cypriot traditional wine "Commandaria" that is produced from sun-dried grapes. Different sample preparation methods such as freeze-drying and nitrogen-flow concentration and direct analysis were used. The spectra were obtained in transmittance mode from KBr pellets and by using the attenuated total reflectance technique, and analyzed statistically using multivariate chemometric techniques, involving principal component analysis, cluster analysis, linear and regularized discriminant analysis, and classification and regression trees. A nearly correct classification for Commandaria was achieved. Fourier Transform Infrared spectroscopy and chemometrics were able to differentiate all the types of Commandaria (nonfortified, fortified, and commercial) from various sweet wines from other countries.
Commandaria is a traditional Cyprus product that was proven to be very popular and economically very important. There is therefore a need to determine its chemical characteristics in order to differentiate it from its competitors and thus enable Cyprus to seek the protection of the name as a regional product. A means of easily distinguishing the genuine product from others mimicking it is also of significant economic interest.
为了研究源自葡萄干的塞浦路斯传统葡萄酒“Commandaria”的真实性和独特性，测定了来自塞浦路斯和其他国家的 65 种甜酒的 FT-IR 光谱。使用了不同的样品制备方法，如冷冻干燥和氮气流浓缩以及直接分析。使用衰减全反射技术从 KBr 压片获得光谱，并使用多元化学计量技术进行统计分析，包括主成分分析、聚类分析、线性和正则判别分析以及分类和回归树。对 Commandaria 进行了近乎正确的分类。傅里叶变换红外光谱和化学计量学能够区分来自其他国家的各种甜酒的所有类型的 Commandaria（非强化、强化和商业）。
Commandaria 是塞浦路斯的传统产品，被证明非常受欢迎，在经济上也非常重要。因此，有必要确定其化学特性，以便将其与竞争对手区分开来，从而使塞浦路斯能够寻求作为地区产品的保护。一种简单区分正品和仿冒品的方法也具有重要的经济意义。
