Extraction technology of polysaccharides from Kaite mango by-products

To explore the extraction technology of polysaccharides from Kaite mango processing wastes，the optimal extraction parameters were investigated by using orthogonal array design. The contents of polysaccharide were determinated by anthranone-sulfuric acid. The results showed that the optimum conditions for extracting polysaccharides in peel were as follows：extraction temperature of 70℃，extraction time for 2 hours， liquid-to-solid ratio of 1∶25，and re-extracted 3 times. The polysaccharide yield could reach 6.62 （±0.51）% in peel.For the fruit embryo，the optimum extraction technology was as follows：extraction temperature of 90℃，extraction time for 3 hours，liquid-to-solid ratio of 1∶20 and re-extracted 3 times. The polysaccharide yield was 3.48（±0.40）%. The polysaccharide content in peel was higher than that in embryo. These results suggested that extracts of mango processing wastes had potential value of utilization in polysaccharide industries.