Objective:In this study, through research active ingredient, fingerprint, SO_2 residues and heavy metals to make a quality evaluation of the Yam slices from different areas, and discuss fumigation with sulfur on the impact of Yam though toxicology ,expect to make an objective quality evaluation for Yam slices.
Methods:1. Use HPLC to determine the purity of the active ingredient—allantoin and diosgenin;2.Establish fingerprint of yam slices by HPLC;3.Determine the purity of SO_2 residues by acid distillat...