Found in ripe fruit such as apples and plums but mainly prepared from citrus peel, traditionally lemons, limes and grapefruit.

Pectin is mainly used as a gelling agent, but can also act as thickener, water binder and stabiliser. The key characteristics being that it forms jelly and jam-type gels in presence of sugar and acid which is then used to gell various foods, drugs, and cosmetics.

Uses include confectionery, high-sugar jellies, jams, preserves, marmalades and acid milk drinks.