Apple has a layer of natural fruit wax on its surface, which can protect the pulp and can be eaten. Edible wax is artificially added, which can keep the moisture of the fruit and prevent the fruit from rotting. This wax is mainly extracted from crustaceans such as crabs and shellfish, and it will not cause physical discomfort if eaten in moderation. But some unscrupulous merchants will use industrial wax instead of edible wax. Industrial wax contains heavy metals such as mercury and lead, which is harmful to health and unfit for consumption.

2 What happens when apples are waxed? Although edible wax is non-toxic, long-term excessive consumption may increase the burden on the stomach and liver and lead to physical discomfort. This situation can be easily solved by controlling the amount of apples. However, industrial wax contains harmful substances such as heavy metals, which will penetrate into the pulp and be harmful to the body. It is generally not recommended to eat, or eat after peeling.

3 How to identify waxed apples When choosing waxed apples, you can wipe the surface of the fruit with a napkin. If the napkin is reddish, it is probably industrial wax. Because industrial wax and edible wax are usually difficult to distinguish, it is recommended to soak apples in clear water, add appropriate amount of salt, rub them with your hands several times, and then rinse them with clear water.

4 How to choose a good apple 1? Judging from the appearance, it is recommended to choose red apples. Red apples receive longer light, accumulate more sugar and taste sweeter. In addition, apples with small spots and wrinkles on the peel have better maturity and taste.

2, a specific weight of apples contains a lot of dietary fiber and water, choose whether apples are sweet or not, and you will know by weighing them with your hands. Generally, heavier apples are rich in water and taste more crisp. You can also bounce the apple gently with your hands, and there is a crisp echo, which means that the apple tastes better.

Apples contain a lot of sugar, which smells fresh and fruity. If you can't smell it, it may not be fresh. In addition, when choosing apples, you can see if there are any fruit handles. Generally, apples with fruit stalks are fresher and sweeter.