Sliced applies, protected by an invisible, vitamin- and mineral-based coating, can keep their appealing color and texture for up to 28 days in the refrigerator, home cooks and gourmet chefs alike are discovering. The invisible coating—an easy-to-apply dip—was patented by ARS and co-investigators at Mantrose-Haeuser, Co., Inc., Westport, Conn., several years ago.
Today, marketed as NatureSeal, it's used in homes, school cafeterias, supermarket delicatessens, upscale restaurants and in fast-food restaurants nationwide. Some supermarkets sell packets of NatureSeal for home use. It's also available on the World Wide Web.
Unlike lemon juice—a traditional option for keeping apple slices from turning mushy and brown—the coating doesn't change the crisp texture and natural flavor of freshly sliced apples.
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