The microwave-assisted extraction of pectic polysaccharides from sisal wastes left over after fiber production was investigated.Response surface methodology(RSM) based on a three-level,three-variable Box-Behnken design was applied to optimize three extraction conditions including microwave output power,extraction time and solvent pH.The optimum extraction conditions were found to be 534 W,9.8 min and pH 1.3.The yield of ASP(pectic from Agave sisalana Perrine) under the optimized conditions was 6.10% and gal...