Method for preparing okra polygalacturonic acid having uric acid-lowering effect

Abstract

An okra polygalacturonic acid having a uric acid-lowering effect, a method for preparing the same, and use of the same are disclosed. The method includes: smashing an okra, lixiviating the okra in ethanol, and filtering to obtain a filtrate and a residue; removing the filtrate, and lixiviating the residue in heated water to obtain an extraction solution; adding the ethanol into the extraction solution to precipitate okra crude polysaccharides; purifying the okra crude polysaccharides over an anion exchange column by eluting with water or a NaCl solution, a Tris-HCl solution or a NaCl-containing Tris-HCl solution, or a phosphate solution or a NaCl-containing phosphate solution, and collecting a fraction eluted by the NaCl solution, the NaCl-containing Tris-HCl solution, or the NaCl-containing phosphate solution; and concentrating, dialyzing and drying the fraction to obtain the okra polygalacturonic acid.

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