A study published in the Journal of Agricultural and Food Chemistry, revealed that spinach stored continuously under the light for as little as three days boasted higher levels of vitamin C and preserved levels of K, E, folate and the carotenoids lutein and zeaxanthin. The lights enhance nutrient levels by encouraging photosynthesis—the process by which plants use energy from the sun to create food and compounds that protect them. That means that the package of spinach at the front of the case could actually have more nutrients than the one in the dark at the back of the case in the dark.
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