RBA of 13 compounds from ME of CK to DPPH•.

a.Relative binding affinity 100% was thought to be reacted completely because it was not detected in experiment group;b.Compound 10 can't detected before or after reaction with DPPH• and identified as antioxidants;c.The peak area of compound 11, 12 increased too much and identified as antioxidants temporarily.a. 相对结合亲和力（Relative binding affinity）为100%的样品被认为已完全反应，因其在实验组中未被检出；b. 化合物10在与DPPH•反应前后均未被检出，被鉴定为抗氧化剂；c. 化合物11、12的峰面积增幅过大，暂被鉴定为抗氧化剂。