Table 3.
The chemical composition, molecular weights (Mw), polydispersity (Mw/Mn), and constituent monosaccharides of SCP-W, SCP-U, and SCP-M.
| SCP-W | SCP-U | SCP-M | |
|---|---|---|---|
| Extraction yield (%) | 3.98 ± 0.22 a | 4.13 ± 0.24 a | 4.26 ± 0.21 a |
| Total polysaccharides (%) | 80.15 ± 0.54 a | 79.27 ± 0.42 a | 82.62 ± 1.09 a |
| Protein content (%) | 1.36 ± 0.11 c | 2.08 ± 0.19 b | 3.32 ± 0.26 a |
| Total uronic acids (%) | 40.88 ± 1.98 a | 34.45 ± 2.03 b | 30.45 ± 1.39 c |
| Degree of esterification (%) | 33.07 ± 2.17 a | 20.67 ± 1.92 b | 6.54 ± 1.55 c |
| Mw × 105 (Da, error) | 5.719 (± 0.86%) a | 4.768 (± 0.82%) b | 4.336 (± 0.84%) b |
| Mw/Mn (error) | 1.52 (± 1.22%) | 1.81 (± 1.43%) | 1.82 (± 1.68%) |
| Constituent monosaccharides and molar ratios | |||
| Glucose (Glc) | 1 | 1 | 1 |
| Galacturonic acid (GalA) | 6.37 | 2.75 | 2.04 |
| Galactose (Gal) | 5.22 | 2.55 | 2.41 |
| Arabinose (Ara) | 4.76 | 2.41 | 1.94 |
| Rhamnose (Rha) | 0.47 | 0.22 | 0.19 |
| Mannose (Man) | 0.19 | 0.30 | 0.22 |
| Glucuronic acid (GlcA) | 0.12 | 0.11 | 0.09 |
| Xylose (Xyl) | 0.05 | 0.04 | 0.05 |
SCP-W, hot water extraction of snow chrysanthemum polysaccharides; SCP-U, ultrasonic-assisted extraction of snow chrysanthemum polysaccharides; SCP-M, microwave-assisted extraction of snow chrysanthemum polysaccharides; the values represent mean ± standard deviation, and superscripts a–c differ significantly (p < 0.05) among SCP-W, SCP-U, and SCP-M; statistical significances were carried out by ANOVA, followed by Duncan’s test.