Analysis of 13 phenolic compounds in aloe species by high performance liquid chromatography

Thirteen phenolic compounds from Aloe barbadensis (syn. A. vera) and A. arborescens were analysed by high performance liquid chromatography, using a reverse phase column eluted with a methanol: water gradient, and detected by UV at 293 nm. Aloesin, 8-C-glucosyI-7-O-methyl-(S)-aloesol, neoaloesin A, 8-O-methyl-7-hydroxyaloin A and B, 10-hydroxyaloin A, isoaloeresin D, aloin A and B, aloeresin E and aloe-emodin from A. barbadensis: and aloenin, aloenin B, 10-hydroxyaloin A, aloin A and B, and aloe-emodin from A. arborescens, were identified and quantified. The seasonal variation of two Aloe species was also examined by this method. (C) 1998 John Wiley & Sons, Ltd.