Chestnut, heather, honeydew, multifloral, orange blossom and thyme honey samples obtained either from beekeepers or supermarkets from Portugal, Greece, Oceania and Asia, were characterised by means of poly-parametric analysis: palynological, °Brix, moisture, pH, electrical conductivity, free acidity, total dissolved solids, salinity, vitamin C, specific weight, CIELAB colour parameters, Pfund and colour intensity determinations, along with bio-activity and volatile compounds analyses were carried out. Results showed that the botanical and geographical origin of honey samples had a similar impact on the determined parameters, using dimension reduction and classification techniques. Among them, moisture, °Brix, electrical conductivity, salinity, pH, colour parameters L* and b*, colour intensity, 1-hydroxy-2-propanone, benzaldehyde, 2-ethyl-1-hexanol, HMF and benzeneacetaldehyde were the potential markers related to the geographical and botanical origin of six honey varieties from different countries. Finally, the identification of methylglyoxal in Portuguese honeydew honey creates the basis for new research on the isolation and identification of this compound in European honey.

中文翻译：

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葡萄牙，希腊，大洋洲和亚洲蜂蜜的质量和原产地表征，基于多参数分析与降维和分类技术的结合

从养蜂人或葡萄牙，希腊，大洋洲和亚洲的超级市场购得的栗子，石南花，蜜露，多花，橙花和百里香蜂蜜样品通过多参数分析进行了表征：孢粉学，白利糖度，水分，pH，电导率进行了游离酸度，总溶解固体，盐度，维生素C，比重，CIELAB颜色参数，Pfund和颜色强度的测定，以及生物活性和挥发性化合物的分析。结果表明，使用降维和分类技术，蜂蜜样品的植物来源和地理来源对确定的参数具有相似的影响。其中，水分，白利糖度，电导率，盐度，pH，颜色参数L *和b *，颜色强度，1-羟基-2-丙酮，苯甲醛，2-乙基-1-己醇，HMF和苯乙醛是与来自不同国家的六个蜂蜜品种的地理和植物来源相关的潜在标记。最后，葡萄牙蜜露蜂蜜中甲基乙二醛的鉴定为欧洲蜜中该化合物的分离和鉴定新研究奠定了基础。