Studies on Maltulosyl Arginine (Arg-Fru-Glc) of Red Ginseng from Different Processing Methods by ESI-MS

Four different methods were used to process fresh ginseng into red ginseng in this paper. The contents of AFG in these red ginseng were determined by ESI-MS. The results show that the indirect steaming method plays an important role in increasing the AFG content, while soakage in vinegar alone has no effect on it.