Chemical properties of water-soluble pectins in hot- and cold-break tomato pastes

Fractions separated by a DEAE-cellulose column from HP (HP3, HP4, HP5) were also rich in GalA, while those from CP (CP2, CP3, CP4) were all rich in neutral sugar. However, the ratios of individual sugars of CP fractions were very different. Unlike the neutral sugar-rich fractions, the GalA-rich ones treated with polygalacturonase were mostly degraded. In addition, the chemical structure of HP5 (homogalacturonan) and CP4 (rhamnogalacturonan) were compared after mild acid hydrolysis.