Research Article
Optimum Extraction, Characterization, and Antioxidant Activities of Polysaccharides from Flowers of Dendrobium devonianum
Table 1
Response surface analysis program and results for the yield polysaccharides from D. devonianum flowers.
| | Run | Temperature
: temperature (°C) | Time
: extraction time (min) | Factor 3
: water-to-material ratio | Yield of polysaccharides
: (%) |
| | 1 | 50 (−1) | 50 (0) | 25 | 17.30 | | 2 | 60 (0) | 60 | 15 (−1) | 16.11 | | 3 | 60 (0) | 40 (−1) | 25 ) | 16.68 | | 4 | 60 (0) | 50 (0) | 20 (0) | 21.22 | | 5 | 70 | 50 (0) | 15 (−1) | 16.22 | | 6 | 50 (−1) | 50 (0) | 15 (−1) | 15.66 | | 7 | 60 (0) | 40 (−1) | 15 (−1) | 15.41 | | 8 | 60 (0) | 60 | 25 | 19.57 | | 9 | 60 (0) | 50 (0) | 20 (0) | 19.4 | | 10 | 50 (−1) | 60 | 20 (0) | 16.37 | | 11 | 50 (−1) | 40 (−1) | 20 (0) | 15.42 | | 12 | 60 (0) | 50 (0) | 20 (0) | 19.02 | | 13 | 60 (0) | 50 (0) | 20 (0) | 20.00 | | 14 | 60 (0) | 50 (0) | 20 (0) | 19.94 | | 15 | 70 | 60 | 20 (0) | 18.65 | | 16 | 70 | 40 (−1) | 20 (0) | 17.90 | | 17 | 70 | 50 (0) | 25 | 18.58 |
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