English Dictionary

pectin

/ˈpɛktɪn/

noun

(biochemistry) A polysaccharide extracted from the cell walls of plants, especially of fruits; under acidic conditions it forms a gel. It is often used in processed foods, especially jellies and jams where it causes thickening (setting).

Pectin is a type of soluble fiber found in fruits.

意味（1）

(biochemistry) A polysaccharide extracted from the cell walls of plants, especially of fruits; under acidic conditions it forms a gel. It is often used in processed foods, especially jellies and jams where it causes thickening (setting).

Apple is rich in pectin and so is often added to other fruits when making jam so it will set.