Question

Which nutrients are found in green leafy vegetables ? Which four precautions you will take to preserve nutrients while cooking them?

Answer 1

we find nutrients like calcium ,iron,fiber,vitamin c and k, folate.
ways to preserve nutrients is
adding less water
check out the temperature and time
steaming is a great way to cook
always cover the pot to protect the steam

Answer 2

Dark green leafy vegetables are an excellent source of fiber, folate, and carotenoids. These vegetables also contain vitamins C and K and the minerals iron and calcium. In addition, dark green leafy vegetables act as antioxidants in the body
To preserve the nutrients during cooking
Dry cooking methods such as grilling, roasting and stir-frying also retain a greater amount of nutrients than boiling. If you prefer to boil your vegetables, save the nutrient-rich cooking water to add to soups and sauces.

Contrary to popular belief, microwaving doesn't kill nutrients in vegetables. In fact, it may outrank steaming when it comes to retaining antioxidants.

A 2009 report in the Journal of Food Science found that compared with boiling, pressure cooking and baking, microwave cooking helped maintain the highest levels of antioxidants in beans, beets, artichoke, asparagus, garlic, onion and spinach. Microwave cooking increased antioxidant activity in eggplant, corn, peppers and Swiss chard. On the other hand, boiling and pressure cooking led to the greatest antioxidant losses.