Pectins Pectins are complex polysaccharides that consist of regions of linear polygalacturonan and branched rhamnogalacturonans. Pectins are present in the primary cell wall of all plant cells, not only in xylem and phloem but also in fruits, etc. In addition, the middle lamellae of lignified plant tissues contain pectins. The biosynthesis of pectins begins right
