Solid-liquid ratio (B) Table 6. L9 (34) Orthogonal experiment results of microwave method Number Time (A) Solid-liquid ratio (B) Microwave power(C) Extraction yield (%) 1 A1 B1 C1 21.45 2 B2 C2 24.18 3 B3 C3 26.73 4 A2 24.31 5 32.12 6 22.77 7 A3 23.08 8 22.11 9 22.72 K1 72.36 68.84 66.33 K2 79.2 78.41 71.21 K3 67.91 72.22 81.93 K1i 24.12 22.95 K2i 26.4 26.14 23.74 K3i 22.64 24.07 27.31 R 3.76 3.19 5.2 Note: R refers to the result of extreme analysis. Extraction yield (%) = (the content of polysaccharide in the sample / the content of polysaccharide in material) × 100. Chunmei GU et al. The Comparison and Analysis of Three Extraction Methods for Polysaccharides in Purslane. Journal of Food and Nutrition Research, 2014, Vol. 2, No. 7, 401-405. doi:10.12691/jfnr-2-7-12 © The Author(s) 2014. Published by Science and Education Publishing.