time (min) | | | |
---|
mobile phase | 0 | 25 | 30 |
%A | 85 | 15 | 5 |
%B | 15 | 85 | 95 |
- Legend: *only caffeic acid degraded up to 9.4% in 120 minutes, but as the analysis lasts less, this was not of great significance; CA: caffeic acid; IFA: isoferulic acid; PME: pinocembrin-7-methylether; RSD: relative standard deviation.