Under the light of the supermarket freezer, the "best shelf life" is only about 4 hours; when the green leafy vegetables and apples are put together, the leaves will turn yellow and become bad quickly; the juice will be put back into the refrigerator after opening, even if the bottle cap is tightened. Half a vitamin C will be lost in a week... In November, Taiwan’s latest issue of Kang Jian’s magazine pointed out that many foods
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