Cut vegetables before washing
This is an extremely wrong habit that many housewives have. The explanation for this case is that vitamins exist in vegetables in the form of water so they are easily dissolved in water when washing. Cutting vegetables and washing vegetables without cooking immediately also makes the amount of vitamins in vegetables lost quite large. through the evaporation process.
Fried time is too long
The vitamins in vegetables are very "sensitive", if cooked under a small flame for a long time, it is easy to decompose. Therefore, the dietitian advises that the cooking time should not be prolonged, preferably with a large flame and not too much water to minimize vitamin loss.
Cook again and again
Green vegetables after cooking will lose most of the nutrients. If cooked again and again, nutrients will completely disappear and even form toxic substances for the body. This is similar to the processing of small fire vegetables that also cause loss of nutrients and easily cause metamorphosis of vegetables.
After cooking, do not eat immediately
After cooking, vegetables will lose about 15% of vitamins and nutrients. This amount of nutrients will gradually disappear over time by 25% after 30 minutes and 75% after 1 hour. When cooking is finished, vegetables easily fall into the attack cycle of bacteria, pathogens that cause metamorphosis and affect health.
Vegetables have been cooked overnight
Because nitrate content in green vegetables is quite high, if it is cooked too long, the bacteria decompose, the nitrate will again form nitrite - a carcinogen, even if you boil it again, it cannot be removed. So do not eat vegetables that are left overnight.
Store vegetables too long before boiling
Because it is not convenient to go to the market, many people have to buy a lot of vegetables to keep the refrigerator cool to eat all week, even longer. However, this makes vegetables lose many nutrients during storage.