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Identify whether wax on apples is edible

There are many kinds of apples with more nutritious peel than pulp. They are not only crisp and sweet Gala, Fuji, Guoguang apples, but also soft banana apples. They are both domestic apples and imported snake fruits transported to Beijing by sea. Among so many varieties of apples, which one is the most nutritious? There are many varieties of apples, but in terms of nutrition, they should be selected according to personal tastes and preferences. Whether apples should be peeled or even peeled has been debated for a long time. From the point of view of nutrition alone, we must choose to eat even skin, because apple skin is rich in nutrients, has stronger antioxidant activity, and can prevent chronic diseases such as hypertension, compared with pulp.
There are three kinds of wax on the peel. When many people eat apples without peeling, they often feel that the surface of the apple will be oily and waxy, so they worry about whether the wax on the peel will do harm to the body. There are three kinds of wax on the peel: there is a layer of wax on the surface of the apple itself, which is a lipid component, and it is in the apple. The plant protective layer formed on the surface can effectively prevent microorganisms and pesticides from invading the pulp and play a protective role; some high-grade apples have wax on them, which is artificially added to the edible wax. This kind of "artificial fruit wax" is actually a kind of chitosan substance, mostly extracted from crabs, shells and other crustaceans. The substance itself is harmless to the body. Its function is mainly to keep apples fresh and prevent them from decaying and deteriorating during long-distance transportation and storage. To remove this layer of wax is also very simple, directly rinse with hot water can remove this layer of artificial edible wax apple surface. What people have to worry about is actually the third kind of wax - illegal vendors use industrial wax to wax fruits. The mercury and lead contained in the wax may penetrate into the pulp through the peel, causing harm to the human body. Therefore, when selecting waxed fruits, you can wipe the fruit surface with hand or napkin paper. If you can wipe a light red layer, don't buy it. This is probably industrial wax.
03 The apples with bagging treatment (wrapped in bags during fruit growth, which can effectively prevent pests and diseases and pesticide pollution) are preferred when other fruits are selected for Apple ripening. This kind of apple skin is clean and even, and is less affected by contaminated gas and pesticide spraying. Autumn is the ripening season of apples. Fresh apples were sold at that time without preservative treatment, so eating the peel was safer. Moreover, fresh apples have natural wax on the surface, and you can see a layer of white frost. If the apples are very beautiful on the surface, especially the off-season apples, it is better to peel them and eat them again. Apples can be kept fresh for 7 to 10 days in the shade. If they are stored in plastic bags in the refrigerator, they can be kept for longer, but the nutrition will be lost. Apple also has the effect of ripening fruit. If the immature kiwifruit is put into the plastic bag with apples, the ethylene released by the apple has the effect of ripening other fruits and can soften kiwifruit or pear. However, if apples are put together with other ripe fruits and vegetables, they will accelerate their decay, so they should be avoided.