齐墩果酸是女贞子中主要有效成分之一，其含量高低直接影响女贞子的药材质量。今采用薄层扫描法对不同生长发育时期的女贞子中齐墩果酸进行定量分析，结果表明，女贞子在幼果期齐墩果酸含量最高，达8％，随着果实进一步发育成熟，其含量呈下降趋势，降至2．5％左右不再下降。实验结果对认识齐墩果酸在女贞子中累积变化规律和确定合理采收期提供了科学依据。

By means of TLC-densitomery, the contents of oleanolic acid extracted from the fruits of Ligustrum lucidum were determined to be 8.04% (g/g) in the unriped fruit collected in August and 2.73% (g/g) in riped fruit gathered in December. This result showed that the oleanolic acid content in fructus L. Iucidum decreases gradually with growing until the fruit is fully riped.