Don't buy navel oranges that stick to your hands

Xinhuanet Changchun 65438+February 13 special, now is the time when oranges, tangerines and oranges are selling well. Be sure to pay attention to "dyed orange" and "paraffin orange" when you are full, and carefully buy oranges, oranges and oranges that stick to your hands.

Why do some navel oranges stick to their hands? Professor Liu Xuejun from the College of Food Engineering of Jilin Agricultural University explained the mystery. Liu Xuejun said that navel oranges are generally waxed, especially those out of season (navel oranges in March and April every year). However, oranges, oranges and preservatives mostly contain shellac, ginseng glyceride and other substances. If these substances are excessive, they will penetrate under the skin of the fruit, which will be harmful to people after eating such oranges, oranges and oranges. In addition, some people do not wax fruits, but wax industrial waxes and add pigments. The thicker the wax, the better the appearance and the faster the internal decay. This is what people often call "dyed oranges". Such oranges will form color difference on the surface of oranges, oranges and oranges due to uneven dyeing. [delicious food]

Experts remind that there is a thick layer of things on the skin, which feels shiny and sticky. Don't buy navel oranges. When buying oranges, especially navel oranges, you should choose normal colors and look at the lenticels on the epidermis. Good oranges have more lenticels and rough hand feel, while poor oranges have fewer lenticels and relatively smooth hand feel. If a good orange is wiped with paper, you can find that the color of the paper will not change. If pigment is added during processing, it will fade when rubbed.

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