Table 1.
Characterization of mPEG-ROP conjugates
| Materials and conjugates | Mn (Da) | Mw (Da) | Mp (Da) | Polydispersity index | Grafting degree | Designation |
|---|---|---|---|---|---|---|
| ROP | 1738 | 2055 | 1991 | 1.18 | – | – |
| 30 kDa mPEG-NH2 | 30836 | 33099 | 34522 | 1.06 | – | – |
| 40 kDa mPEG-NH2 | 34873 | 41380 | 48015 | 1.19 | – | – |
| mPEG30k-ROP | 32373 | 34864 | 34646 | 1.08 | 0.991 | 0.99P30k-R |
| mPEG40k-ROP | 35724 | 42721 | 49479 | 1.20 | 0.983 | 0.98P40k-R |
Abbreviations: Mn, number average molecular weight; Mp, peak average molecular weight; Mw, weight average molecular weight; mPEG, methoxy-polyethylene glycol; ROP, radix ophiopogonis polysaccharide.