Research Article
Antioxidant Activities and Repair Effects on Oxidatively Damaged HK-2 Cells of Tea Polysaccharides with Different Molecular Weights
Table 2
FT-IR characteristic absorption peak of original and degraded TPS.
| | Polysaccharide abbreviation | Mean molecular weights Mr/kDa | –COOH content/% | Relative intensity of -COOH absorption peak | Functional groups characteristic absorption peak | | -OH | -COOH | Sugar ring |
| | TPS0 | 10.88 | 11.2 | 1.3 | 3423 | 1609.9 | 1391.1, 1142.3, 1093.9, 765.9 | | TPS1 | 8.12 | 12.3 | 2.0 | 3417 | 1602.1 | 1385.4, 1213.4, 778.6 | | TPS2 | 4.82 | 12.7 | 2.7 | 3412 | 1610.5 | 1399.2, 1087.5, 780.6 | | TPS3 | 2.31 | 11.0 | 1 | 3401 | 1608.1 | 1401.4, 1087.3, 780.4 |
|
|
[ ] (100-T TPS0): (100-T TPS1): (100-T TPS2): (100-T TPS3), where T represents the light transmittance. |
