Broccoli can still be eaten when it changes color.
Broccoli is a very nutritious vegetable, the discoloration will make the nutrients have a certain degree of reduction, taste worse, but eat the discoloration of broccoli will not have a harmful effect on the human body, is edible. However, the appearance of discoloration is very serious and the phenomenon of external decay, do not eat again, so as not to harm the human body.
2 Why does broccoli change color after cutting
After broccoli is cut, it is easy to oxidize and let broccoli change color when it comes in contact with oxygen in the air. In addition, after cutting the broccoli due to a long time to place, which chlorophyll contains magnesium ions will slowly reduce, thus showing a color change.
3 How to keep broccoli fresh after cutting without discoloration
How to keep broccoli fresh after cutting without discoloration, the most important thing is to isolate the oxygen in the air, reduce the respiratory strength of broccoli, you can cut the broccoli after the use of paper or plastic wrap preservation, placed in the refrigerator in the freezer to save, and in addition to the amount of alcohol can inhibit the release of broccoli's ethylene, to prolong the storage time of broccoli.
4 How to pick fresh broccoli
1, look at the surface color of broccoli is not emerald green, the general choice of color emerald green broccoli is good, and then look at the size of the bulb of the broccoli, bulb large better.
2, generally pick the surface feel no bump, or bump less broccoli is better, the surface of the bulb bulge of the higher the better.
3, and then pick up the broccoli, to see if it is heavy, generally two almost the same size of broccoli, choose a lighter better.
4, pick broccoli, but also look at how the broccoli stalks, try not to choose the stalks hard broccoli, such broccoli is older.