Kiwifruit Source & Identity
The species is Actinidia deliciosa (A.Chev.) C.F.Liang & A.R.Ferguson, the climbing vine behind the common green kiwifruit. The part used is the fruit. Golden kiwifruit comes from a related species, Actinidia chinensis, and the small smooth-skinned kiwiberry from Actinidia arguta, so a buyer who wants the green fuzzy fruit should confirm the species. Kiwifruit holds sugars, organic acids such as quinic, citric and malic acid, pectin and polyphenols, and it contains the protein-digesting enzyme actinidin, which is sensitive to heat. A water extract concentrates the soluble sugars, acids and polar polyphenols, while the fuzzy skin and fine seeds stay out of the soluble fraction.












