中文摘要：

比较9种荔枝皮花色苷在不同体积分数乙醇中粒径的分布,以及不同品种的色度差异,并将花色苷粒径和色度指标与其抗氧化活性之间进行相关性分析。结果表明,糯米糍在35%乙醇溶液中粒径分布最好,为2.48～6.51μm,D50为4.56μm,比表面积为498.23m2/kg,且不同品种荔枝皮花色苷粉末在乙醇溶液中分布变化明显。糯米糍具有最大彩色度c＊值（110.27）和a＊值（87.12）,妃子笑具有最大L＊值（94.86）和b＊值（98.79）;不同品种的色度变化在红色与黄色之间。花色苷含量、抗氧化活性（清除率、IC50）与粒径指标（D50、比表面积）和色度指标（L＊、a＊、b＊、c＊、h）具有相关性,且荔枝皮花色苷颗粒对色度也有着决定性影响。

英文摘要：

Anthocyanin extracts prepared from 9 varieties of litchi pericarp were compared for differences in particle size distribution in different concentrations of aqueous ethanol solutions and various color parameters such as L＊,a＊,b＊,C＊ and h°.In the case of the extracts having different anthocyanin contents,the correlations among anthocyanin content,particle size distribution parameters and color parameters in 35% aqueous ethanol solution and maximum hydroxyl free radical scavenging rate or median effective concentration（EC50） were analyzed.Results indicated that Nuomici litchi pericarp anthocyanins dissolved in 35% aqueous ethanol solution showed the best particle size distribution（in the range of 2.48-6.51 μm） and the D50 and the specific surface area were 4.56 μm and 498.23 m2/kg,respectively.In addition,anthocyanin extracts prepared from different varieties of litchi pericarp revealed a significant difference in particle size distribution.Meanwhile,Nuomici litchi pericarp anthocyanins had the highest c＊（110.27） and a＊（87.12） values and Feizixiao litchi pericarp anthocyanins had the highest L＊（94.86） and b＊（98.79） values.The color of anthocyanin extracts prepared from different varieties of litchi pericarp changed from red to yellow.Correlations were observed among anthocyanin content,maximum hydroxyl free radical scavenging rate or IC50 and particle size distribution parameters and color parameters in 35% aqueous ethanol solution.Moreover,particle size distribution parameters exhibited a dominant effect on color parameters in 35% aqueous ethanol solution.