From Longman Dictionary of Contemporary Englishpectinpec‧tin /ˈpektɪn/ noun [uncountable] DFHCa chemical substance that is found in some fruits and is sometimes added to jam and jelly to make it less liquid
Examples from the Corpus
pectin• To be sure of a good set, use preserving sugar with added pectin.• The cell walls are made up of cellulose and pectin.• Because of their high pectin content, quinces jell much more quickly than almost any other fruit.• Like pectin, psyllium forms a gel which is not digested or absorbed, thereby increasing the viscosity of the meal.• As tomatoes ripen, an enzyme is produced which causes softening by breaking down the pectin in the cell walls.• Or is blueberries, basically what we did was we used blueberry, sugar and, um, pectin.Origin pectin (1800-1900) French pectine, from Greek pektikos “making liquid thicker” 