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Table 1 The data of compounds in mulberry leaves obtained using HREIMS (A1: the peak area of the positive group; A2: the peak area of the blank control)

From: Fabrication of paper-based enzyme immobilized microarray by 3D-printing technique for screening α-glucosidase inhibitors in mulberry leaves and lotus leaves

Peak no. tR/min Identification Molecular formula [M−H] A1/A2 (%)
Detected Expected Error/ppm
1 7.475 Chlorogenic acid C16H18O9 353.0885 353.0873 3.4 248
2 23.844 Isoquercitrin C21H20O12 463.0840 463.0877 − 8.0 57
3 26.036 Astragalin C21H20O11 447.0936 447.0927 2.0 66
4 32.826 Quercetin C15H10O7 301.0360 301.0349 3.7 89