In one of the most comprehensive and definitive studies of its kind to date, a team of researchers at the University of California, Davis have proven that organically grown kiwifruit contain more health-promoting factors than those grown under conventional conditions.
The Davis scientists, led by Drs. Maria Amodio and Adel Kader, showed that organically grown kiwifruit had significantly increased levels of polyphenols, the healthy compounds found in red wine and coloured berries. They also had a higher overall antioxidant activity, as well as higher levels of ascorbic acid (vitamin C) and important minerals compared with their conventionally grown counterparts.
The two categories of kiwifruit showed other differences which Kadel believes are most likely due to the fruits having to be able to survive against pests in the absence of pesticides. For example, organic kiwis had thicker skins, which could help the fruits resist insects, and higher antioxidant activity which is thought to be a natural by-product of stress.
Read the full study