The benefits of eating the purple potato.

The benefits of eating the purple potato.Israeli scientists synthesize healthier potatoes and tomatoes in brilliant colors. The technology can also produce unusually hued ornamental flowers.Are you ready for violet-colored potatoes? How about orange tobacco? Researchers at Israel’s Weizmann Institute of Science have figured out how produce betalain pigments in plants and flowers that don’t normally have them. If you’re thinking, “Who needs violet tomatoes?” you should know that red-violet and yellow betalain pigments contain healthful antioxidant properties. They’re also the basis for natural food dyes for products such as strawberry yogurt. Antioxidant activity is 60 percent higher in betalain-producing tomatoes than in average ones, said Prof. Asaph Aharoni of Weizmann’s Plant and Environmental Sciences Department, who teamed up with Dr. Guy Polturak for the pigment research. “Our findings may in the future be used to fortify a wide variety of crops with betalains in order to increase their nutritional value,” he said. Betalain pigments also protect plants against gray mold, which annually causes crop losses worth billions of dollars. The Weizmann study showed that resistance to gray mold rose by 90% in plants engineered to make betalains.