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Astronauts in space and soldiers in combat use freeze-dried foods because they don’t spoil, they weigh less and they’re more convenient. But freeze-dried foods aren’t necessarily quite as healthful as regular foods, with the levels of some nutrients reduced during processing. Although many nutritional benefits of freeze-dried foods remain intact, some of the more interesting aspects of freeze-dried foods such as berries may be their promise in helping fight disease. A primitive form of freeze drying was in use around BC by the Peruvian Incas as a way to preserve food. Machines to freeze dry foods and other products were developed during the two World Wars, and in , the first freeze-dried coffee was produced. In planning for the long-duration Apollo missions, NASA developed freeze-drying techniques for other foods such as ice cream. To freeze dry any food, it’s first frozen solid, the water is removed, usually via a vacuum pump, and finally a heat source removes ice crystals. The finished product can retain up to 98 percent of its nutrition while weighing only 20 percent of the original. However, a study in Chile, published in in the “International Journal of Food Sciences and Nutrition,” showed that the type of freeze drying used — atmospheric freeze drying versus vacuum freeze drying — and whether infrared radiation was added can affect nutrition in processed blueberries. Gary Stoner, Ph. However, both Stoner’s research and the Chilean blueberry study found that ascorbic acid levels and the amount of polyphenol, a cell-protecting chemical in berries, were measurably reduced by freeze drying. Stoner has used powdered freeze-dried berries in several studies, including one published in “Seminars in Cancer Biology” in October , where the berries showed promise in both preventing and shrinking colon tumors.
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After a sunset beyond romantic, that hunger hits. Cafe Culture. Food portal Society portal Lists portal. Beck explains. Freeze dried dog food is technically raw and full of nutrients. Freeze-dried food can be pretty tasty. Researchers in Oklahoma discovered freeze-dried strawberry powder improved total cholesterol and bad LDL-cholesterol levels in women with metabolic syndrome, a disorder that increases risks for coronary artery disease, stroke and type 2 diabetes. Tapa at bottom. Among Brazilians, health is the third biggest concern, behind only the economic crisis and violence. See also: List of culinary herbs and spices. American sandwiches Foods with religious symbolism Indonesian noodles Vietnamese noodles Vietnamese specialities.