紫外光谱法鉴别泸州地区青果品种

目的]为泸州青果区分应用参考依据,也为泸州青果酒的质量控制打下基础。方法]对泸州合江产随机选取的二白圆、四白圆、大梭子、橘香、糯米5种青果品种进行紫外吸收光谱比较鉴别,分别用丙酮、无水乙醇2种溶剂作提取液,超声波强化辅助提取所得滤液用紫外光谱法测定。结果]不同极性的溶剂(丙酮、无水乙醇)提取液的紫外吸收峰的数目和位置有所不同。结论]利用紫外光谱法可准确鉴别随机选取的5种青果。

Identification of Olive Varieties from Luzhou Area by Ultraviolet Spectroscopy Method

Objective] The aim of the study was to provide reference basis for distinguishing and applying Luzhou olive,and lay the foundation for the quality control of Luzhou olive wine.Method] Five species of olive including Erbaiyuan,Sibaiyuan,Dasuozi,Juxiang and Nuomi selected randomly from Hejiang of Luzhou were compared and identified by ultraviolet absorption spectrum.Using two kinds of solvents including acetone and anhydrous alcohol as extracts,the obtained filtrate by enhanced ultrasonic-assisted extraction was determined by using ultraviolet spectroscopy method.Result] The ultraviolet absorption peak of the extracting solutions(acetone and anhydrous alcohol) with different polarity had different number and position.Conclusion] Five species of olive that were selected randomly could be accurately identified by using ultraviolet spectroscopy method.