BUZZ-SunOpta Inc: To buy private frozen fruit supplier
** Canadian organic food provider's U.S.-listed shares up 3.8 pct at $10.70; Toronto-listed shares up 3.1 pct at C$13.87
** Company to buy organic frozen fruit supplier Sunrise Holdings Delaware Inc from private equity firm Paine & Partners LLC for about $450 mln
** SunOpta says deal expected to add 10 cents per share to adjusted earnings in fiscal 2016
** Up to Thursday's close, stock had fallen 13 pct this year
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