A natural way to relieve summer heat! Chinese yam prevents the three highs and prevents influenza
The heat has increased recently, it still rains from time to time, and the weather is humid. What can you eat to cool down? Shoko Shibukawa, an honorary professor at Yokohama National University in Japan, suggested on NHK's well-known information program "あさイチ" that people eat yam to relieve the heat. In addition to the traditionally known functions of preventing the three highs, it has recently been confirmed that the ingredients of yam can kill influenza viruses and strengthen the immune system. Immunity capabilities.
The reason why yam has the function of preventing three highs is because it has high viscosity glycoprotein, which can protect the gastric mucosa when eaten. It can also cooperate with amylase to help digestion in the body, allowing the digestive tract system to operate better. In addition, the resistant starch in yam can also slow down the rise in blood sugar, so eating it as a side dish can prevent the rapid rise and fall of blood sugar from damaging vascular tissue.
Recently, the Dioscorine in yams has attracted attention, because recent medical discoveries have found that this type of protein can prevent influenza viruses from eroding and damaging the body. Yams with higher levels of Dioscorine in rhizomes are richer in enhancing immune system function. Vitamin E, combined with the antioxidant capacity of vitamin E and the antiviral effect of dioscine itself, can be said to be the best food to prevent influenza in early summer when the temperature tends to drop sharply in the morning and evening.
On the other hand, many people are concerned about the allergy-like itchiness that may occur when cooking and eating yam. In the program, senior chef Kamada Yushi analyzed that this is because roots such as yam and taro contain calcium oxalate, and the crystallization of calcium oxalate The shape is like a tiny needle, which can irritate the skin when touched with bare hands, causing itching similar to an allergy. At this time, as long as you soak the yam in vinegar for half an hour to an hour before cooking, the calcium oxalate crystals will dissolve and reduce the irritation.
However, Professor Shibukawa reminded that if you feel itchy when eating it, you may be allergic. You need to go to the hospital to get an allergen test to know whether your body is suitable for eating yam.
If you buy more than you can eat at one time, soaking in vinegar can also prevent the polyphenols on the skin of the yam from changing color due to the action of enzymes. Peel the remaining yam, wash it, and roll it up with kitchen towels to prevent the yam from deteriorating due to excessive contact with water. , and finally put it in a sealed bag and freeze it for 2 to 3 months.