Table 3.
Chemical composition, molecular weights (Mw), polydispersity (Mw/Mn), and constituent monosaccharides of KPS-M, KPS-U and KPS-H.
| KPS-M | KPS-U | KPS-H | |
|---|---|---|---|
| Extraction yield (%) | 2.92 ± 0.08 a | 2.82 ± 0.10 a | 2.86 ± 0.13 a |
| Total carbohydrate (%) | 78.21 ± 1.42 a | 74.80 ± 1.60 c | 76.18 ± 1.46 b |
| Total uronic acid (%) | 43.88 ± 0.65 b | 43.32 ± 0.73 b | 45.7 ± 0.98 a |
| Protein content (%) | 3.50 ± 0.12 c | 6.08 ± 0.15a | 4.28 ± 0.09 b |
| Mw × 105 (Da, error) | 1.689 (±0.65%) c | 1.769 (±0.63%) b | 1.955 (±0.48%) a |
| Mw/Mn (error) | 1.827 (±1.04%) | 1.724 (±0.91%) | 1.833 (±0.70%) |
| Degree of esterification (%) | 43.33 c | 48.38 b | 55.02 a |
| Constituent Monosaccharides and Molar Ratios | |||
| Mannose | 0.36 | 0.77 | 0.25 |
| Rhamnose | 0.23 | 0.47 | 0.35 |
| Galacturonic acid | 3.28 | 5.16 | 4.07 |
| Glucose | 1.00 | 1.00 | 1.00 |
| Galactose | 1.69 | 2.91 | 1.24 |
| Xylose | 0.24 | 0.36 | 0.24 |
| Arabinose | 0.93 | 1.86 | 1.01 |
KPS-M, kiwifruit polysaccharides (KPS) extracted by microwave-assisted extraction; KPS-U, KPS extracted by ultrasound-assisted extraction; KPS-H, KPS extracted by hot water extraction; Values represent mean ± standard deviation, and superscripts a–c differ significantly (p < 0.05) among KPS-M, KPS-U, and KPS-H; Statistical significances were carried out by ANOVA, followed by Duncan’s test.