Soares Sonia, Pinto Diana, Rodrigues Francisca, Alves Rita C, Oliveira M Beatriz P P
REQUIMTE, LAQV/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
Molecules. 2017 Aug 11;22(8):1338. doi: 10.3390/molecules22081338.
Portuguese honeys (n = 15) from different botanical and geographical origins were analysed regarding their quality parameters (diastase activity, hydroxymethylfurfural content, moisture and pH), colour (L*, a*, b*) and antioxidant profile (total phenolics content, total flavonoids content, DPPH• scavenging activity, and ferric reducing power). The samples were analysed fresh and after 4-years of storage (at 25 °C and protected from light). The hydroxymethylfurfural content and diastase activity of the fresh samples were in accordance with the recommended values described in the legislation. In general, the antioxidant activity of the samples correlated more with the bioactive compounds content than with colour. The storage affected differently each individual sample, especially regarding the antioxidant profile. Nevertheless, although in general the lightness of the samples decreased (and the redness increased), after 4 years, 11 samples still presented acceptable diastase activity and hydroxymethylfurfural values.
对来自不同植物和地理来源的15种葡萄牙蜂蜜进行了质量参数（淀粉酶活性、羟甲基糠醛含量、水分和pH值）、颜色（L*、a*、b*）和抗氧化特性（总酚含量、总黄酮含量、DPPH•清除活性和铁还原能力）的分析。对样品进行了新鲜状态分析以及在25°C避光储存4年后的分析。新鲜样品的羟甲基糠醛含量和淀粉酶活性符合法规中规定的推荐值。总体而言，样品的抗氧化活性与生物活性化合物含量的相关性高于与颜色的相关性。储存对每个样品的影响各不相同，尤其是在抗氧化特性方面。然而，尽管总体上样品的亮度降低（红色度增加），但4年后，仍有11个样品的淀粉酶活性和羟甲基糠醛值可接受。
