| The two major classes of cell wall matrix polysaccharides are the hemicelluloses and the pectic polysaccharides, or pectins. |
| Ripening of fruit is characterized by changes in solubility of pectic substances resulting in softening of fruit texture. |
| The process consists of two parts, first an acid treatment to hydrolyse the pectic substances in the albedo, and then an alkaline treatment to disintegrate and eliminate the rest of the peel. |
| Total levels of pectic substances may be of concern during cider manufacture with respect to haze formation. |
| They increase the elimination of food residues and the insoluble pectic acid stimulates the digestive tract. |
| Because of their negative charge, pectic polysaccharides bind tightly to positively charged ions, or cations. |
