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Study - Organic Kiwi's Higher in Vitamin Content

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Study - Organic Kiwi's Higher in Vitamin Content

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Organic kiwis healthier than non-organic?

By Stephen Daniells

27/03/2007 - The nutritional profile of kiwi fruit grown organically is healthier than conventionally grown fruit, American researchers have reported.

The research, published in the Journal of the Science of Food and Agriculture, compared kiwi fruit grown on the same soil type and environmental conditions. Its findings could re-ignite the debate between conventional and organic fruit that has raged with claim and counter-claim from both sides.

According to background information in the article, the world market for certified organic foods was estimated at $23-25 bn (€17.3-18.8 bn) in 2003 with annual growth of about 19 per cent.

The researchers, led by Maria Amodio from the University of California, Davis, measured post-harvest performance of the organic and conventionally grown Hayward kiwifruit grown on the same farm, and harvested at the same maturity stage.

The authors report that ascorbic acid (vitamin C) levels were higher for the organically grown fruit during storage at zero degrees Celsius (0.33 versus 0.29 grams per kilogram) but no significant difference was observed after storage at 20 degrees for seven days.

Total phenolics were also higher for the organically grown fruit, both for storage at zero degrees (0.56 versus 0.48 grams per kilogram for organic versus conventional fruit, respectively) and after seven days at 20 degrees (0.61 versus 0.51 grams per kilogram for organic versus conventional fruit, respectively).

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