pectine

Noun

pectin (countable and uncountable, plural pectins)

1. A plant-derived polysaccharide found in cell walls (especially in fruits) that forms a gel under acidic conditions and is commonly used to thicken foods like jam and jellies.
   • Apple is rich in pectin and so is often added to other fruits when making jam so it will set.

   Synonyms:

   E440, vegetable jelly