Table 3. Quantitative changes of polyphenols in mulberry leaves of seven different cultivars by harvest season
| Cultivar1) | Harvest season(month) | Phenolics (mg/100 g, dry weight)2) |
| CGA3) | RT4) | IQT5) | Q3MG6) | AG7) | K3MG8) | Total flavonoid |
| GR | June | 1,121.6 | 232.5 | 111.0 | 721.2 | Tr9) | 196.0 | 1,260.8 |
| September | 1,261.5 | 126.7 | 131.0 | 514.7 | 39.4 | 259.1 | 1,070.8 |
| GS | June | 708.4 | 255.5 | 110.6 | 614.5 | Tr | 150.0 | 1,130.6 |
| September | 919.7 | 134.8 | 171.0 | 541.2 | 44.4 | 215.7 | 1,107.1 |
| SG | June | 712.7 | 335.4 | 144.1 | 817.6 | Tr | 132.2 | 1,429.4 |
| September | 1,024.0 | 284.3 | 217.0 | 973.3 | 25.0 | 268.8 | 1,768.4 |
| SI | June | 626.6 | 146.0 | 87.0 | 523.5 | Tr | 76.1 | 832.5 |
| September | 959.8 | 143.6 | 145.0 | 756.1 | Tr | 263.2 | 1,307.8 |
| YC | June | 677.6 | 200.5 | 90.0 | 477.6 | Tr | 45.0 | 813.1 |
| September | 1,063.4 | 154.0 | 130.3 | 550.0 | Tr | 96.9 | 931.3 |
| CI | June | 1,169.3 | 231.4 | 97.8 | 704.4 | Tr | 166.7 | 1,200.3 |
| September | 1,045.3 | 115.4 | 130.2 | 537.2 | 14.6 | 251.6 | 1,049.0 |
| HO | June | 1,085.6 | 355.9 | 144.1 | 295.9 | Tr | 95.3 | 891.2 |
| September | 920.9 | 211.3 | 204.0 | 342.9 | 67.1 | 171.7 | 997.1 |
1)GR, Gaeryang; GS, Geomseol; SG, Sugae; SI, Sinil; YC, Yongcheon; CI, Cheongil; HO, Hongol.
2)Each value is presented as mean of duplicate determinations.
3)CGA, chlorogenic acid.
4)RT, rutin.
5)IQT, isoquercitrin.
6)Q3MG, quercetin-3-O-(6″-O- malonyl)-β-D-glucoside.
7)AG, astragalin.
8)K3MG, kaempferol-3-O-(6″-O-malonyl)-β-D-glucoside.
9)Tr, trace (<1 mg/ 100 g).