Colorimetric Method in the Determination of 1-Deoxynojirimycin Isolated from the Mutant Strain of Bacillus subtilis Determination of 1-deoxynojirimycin from mulberry resources and analysis of their bioactivities Correlation of DNJ between Taxilli Herba and its host-plants Advances in studies on 1-deoxynojirimycin and its derivatives separated from mulberry Determination of 1-deoxynojirimycin in leaves of Morus alba by high performance liquid chromatography with fluorescence detection 1-Deoxynojirimycin Extraction from Ramulus Mori and Relationship Analysis between Its Content in Extracts and α-Glucosidase Inhibitory Activity