NEWSBRIEF - Frozen orange juice stays fresher
Researchers at Arizona State University have compared the vitamin C content of reconstituted frozen orange juice with that of ready-to-drink orange juice purchased four to five weeks prior to the expiration date. The frozen orange juice, when reconstituted, contained 86 mg of active (reduced) vitamin-C per cup declining to 29-46 mg per cup after four weeks storage at 4 degrees C. The ready-to-drink juice contained 27-65 mg/cup when opened and 0-25 mg/cup at expiration four weeks later. The researchers conclude that ready-to-drink orange juice should be purchased three to four weeks before expiration and consumed within one week of opening.
Journal of the American Dietary Association, Vol. 102, April 2002, pp. 525-29