How much time a egg should be boiled without harming the protein and other nutrients?

The ideal boiling time for an egg depends on your desired level of doneness, but you can generally boil an egg without harming the protein and nutrients within these ranges:

* Soft-boiled: 3-4 minutes

* Medium-boiled: 6-8 minutes

* Hard-boiled: 8-10 minutes

Here's why these times work and why longer boiling times might affect the nutrients:

* Protein: Protein in eggs is generally very stable and won't be significantly affected by boiling. However, overcooking can make the yolk rubbery and less appealing.

* Nutrients: Boiling eggs doesn't significantly destroy most vitamins and minerals. However, some water-soluble vitamins (like vitamin B12) can be lost during the cooking process. The longer you boil, the more likely you are to lose some of these nutrients.

* Texture: Overcooking can lead to a rubbery yolk and a hard, dry white.

Tips for perfect boiled eggs:

* Start with cold water: This helps the egg heat evenly and prevents cracking.

* Add salt to the water: This helps prevent cracking and adds flavor.

* Don't overcrowd the pot: Leave space between the eggs for even cooking.

* Cool quickly: After boiling, immediately plunge the eggs into ice water to stop the cooking process and make peeling easier.

Remember: There's no right or wrong time when it comes to boiling eggs. Experiment with different times to find your perfect level of doneness.