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Researchers Transform Fruit Processing Waste Into Antioxidant-Rich Powder

May 3, 2010: 09:30 PM EST
The skin and other by-products of processing fruit into packaged foods and juices are mostly used as animal feed or simply disposed of. But Australian researchers who analyzed the skins of tomatoes, apples, plums, peaches, and other fruits found them to be rich sources of antioxidants. Tomato waste, for example, has twice the amount of the red pigment lycopene. They then developed a process that involves heating, freezing and breaking up the waste with sound waves and concentrating it into a powder packed with antioxidants. Apple waste offers the most promise, they said, mainly because of the high levels of polyphenols. The researchers are working to refine their extraction methods, and are testing their concentrate as a thickener in fruit products and as an antioxidant booster in snack bars.
"From waste to health", The University of Melbourne Voice Vol. 6, No. 5 , May 03, 2010, © The University of Melbourne
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