Yellow corn, white corn, purple corn, old corn, sweet corn, waxy corn, what is the difference between nutrition?
Sweet corn and old corn (traditional corn) are more yellow, carotene and zeaxanthin content is more, which is helpful for vision, in this regard, yellow corn is better than white corn.
Purple corn contains a lot of anthocyanins, antioxidant and anti-aging functions are slightly better, and purple corn is not a genetically modified product.
Sweet corn carbohydrate content is much lower than waxy corn, which contains more water-soluble sugar, although the taste is sweet, but its impact on blood sugar is smaller than waxy corn, so diabetics can appropriately use sweet corn to replace some of the fine staple foods, do not eat too much on the line.
Old corn has a lot of dietary fiber and a low soluble sugar content. It is a very good choice for people who lose weight and diabetes.
Waxy corn is mostly white, the protein content is relatively high, rich in vitamin A, vitamin B1 and other nutrients.
However, it should be noted that the starch content of waxy corn is as high as 70% to 75%, and it is mainly pullulan. Starch is divided into amylose and amylopectin, of which amylopectin can better contact with digestive enzymes and digest faster. Therefore, the calorie and glycemic index of waxy corn are higher than that of sweet corn, and friends who want to lose weight or control sugar are not recommended to choose waxy corn.
Where is the most nutritious part of corn?
Folk remedies about corn whiskers are often circulated on the Internet, in fact, the most nutritious part of corn is not corn whiskers, but in the roots of corn kernels, that is, radicles and germs. Because vitamin E, unsaturated fatty acids and various beneficial elements are concentrated in the radicle and germ.
Is there a big difference in nutrition between frozen corn and fresh corn?
Frozen fresh corn kernels in supermarkets, as long as there are no additional additives, their nutritional value is not much different from fresh corn.
If you buy too much fresh corn at home, you can also put raw fresh corn into a sealed bag and then put it in the freezer layer of the refrigerator for preservation.
How to eat corn is the most nutritious?
Fresh corn has a variety of nutrients such as moisture, active substances, and water-soluble vitamins than sun-dried old corn.
Although the cooked corn will lose some vitamin C, it can release more nutrients, especially a phenolic compound and lysine, which is helpful for auxiliary cancer prevention.
In addition, when eating corn, it is best not to process too much, steam or cook on the line. Sweet popcorn, salted egg yolk corn, etc. are not recommended because they will reduce the original nutritional value of corn.
How much corn can I eat in a day?
Generally adults can eat half a to one medium-sized corn a day, while replacing some of the fine staple foods. If you eat too much corn, excessive intake of dietary fiber may cause bloating and stomach acidity. In daily life, corn can be eaten instead of other coarse grains.
Department of Clinical Nutrition, Peking Union Medical College Hospital
Professor Yu Kang
Welcome to learn nutrition and health knowledge with Professor Yu Kang of the Department of Nutrition of Peking Union Medical College Hospital, and eat healthy and eat beautiful! Pay attention to the headline number of "eat three meals a day"
Yu Kang
Professor and Director of the Department of Clinical Nutrition, Peking Union Medical College Hospital
Member of the Nutrition Standards Committee of the National Health Commission
Director of the Chinese Nutrition Society