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Supermarket Lighting May Boost Spinach's Nutritional Value

A new study suggests supermarket lighting helps spinach stay fresh, and may actually increase its nutritional value. U.S. Department of Agriculture scientists said in a statement that spinach stored in clear plastic packages in fluorescent light for 24 hours for three to nine days has significantly higher levels of vitamins C, K, E and folate than when kept out of the light.  Levels of these nutrients have also shown to increase under lighted conditions. During continuous fluorescent light exposure, for example, levels of folate increased between 84 and 100 percent.  In addition, the vegetable has higher levels of healthy carotenoids like lutein and zeaxantin when kept in lighted conditions, especially at a temperature of 39 degrees Fahrenheit.