Abstract
AbstractPectic polysaccharides (PP) have been isolated from a variety of sources and characterized by their yield, anhydrogalacturonic (AGA) content, degree of methyl esterification (DE) and microgel (MG) content. Molar mass and mass distribution (MMD) were analyzed by high performance size‐exclusion chromatography (HPSEC) coupled with pressure differential viscosity (PDV) and differential refractive index (DRI) detectors. Results were grouped according to the DE of the PP. Among sources of lower methylated (LM) pectins, apricot pectin had the highest weight average molar mass (Mw) followed by apple pectin. Among high methylated (HM) pectins, pumpkin pectin had the highest value of Mw followed by tangerine and lemon pectins. All pectins studied were found to have bi‐modal distribution as indicated by their molar mass calibration curves. Apple pectin was the most polydisperse whereas pumpkin pectin was the least polydisperse as indicated by Mw/Mn, where Mn is the number average molar mass.
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