Seijo María Carmen, Escuredo Olga, Rodríguez-Flores María Shantal
Department of Vegetal Biology and Soil Sciences, University of Vigo, Faculty of Sciences, 32004 Ourense, Spain.
Foods. 2019 Apr 17;8(4):126. doi: 10.3390/foods8040126.
This work investigates the similarities and differences of oak honeydew ( Willd.) and evergreen honeydew ( L.) honey produced in Spain. For this purpose, the physicochemical characteristics of 17 samples from oak honeydew and 11 samples from evergreen honeydew collected in different geographical regions were analyzed. All the samples accomplished European Union requirements for honey consumption. Both honey types had amber dark color; however, the evergreen oak honey was clearer than oak honey, having higher mean values in a* and b* coordinates of CIELab scale. In general, both honey types exhibited high electrical conductivity, a moderate value of pH, medium to low water content, and high diastase activity. The reducing sugar content was significantly lower and maltose content was significantly higher in evergreen honeydew. In addition, total phenols and total flavonoid contents, the antioxidant activity and the melissopalynological analysis was performed. The oak honeydew honey had a higher abundance of , and pollen grains, while the evergreen oak honeydew honey had a higher abundance of , or . A multivariate analysis using the most representative pollen types and physicochemical components facilitated the differentiation of the honey samples, thus this information can be useful for the honey characterization.
本研究调查了西班牙产的栎树蜜露（Willd.）蜂蜜和常绿蜜露（L.）蜂蜜的异同。为此，分析了从不同地理区域采集的17份栎树蜜露蜂蜜样品和11份常绿蜜露蜂蜜样品的理化特性。所有样品均符合欧盟蜂蜜消费要求。两种蜂蜜均呈琥珀深色；然而，常绿栎树蜂蜜比栎树蜂蜜更清澈，在CIELab色空间的a和b坐标中具有更高的平均值。总体而言，两种蜂蜜均表现出高电导率、适中的pH值、中低含水量和高淀粉酶活性。常绿蜜露蜂蜜中的还原糖含量显著较低，麦芽糖含量显著较高。此外，还进行了总酚和总黄酮含量、抗氧化活性及蜂蜜孢粉学分析。栎树蜜露蜂蜜中 、 和 花粉粒的含量较高，而常绿栎树蜜露蜂蜜中 、 或 的含量较高。使用最具代表性的花粉类型和理化成分进行多变量分析有助于区分蜂蜜样品，因此该信息可用于蜂蜜的特性鉴定。
