Any heat over 105 degrees
boiling
Freezing
No, cooking read meat does not effect the protein content as it is stable in this type of meat. Cooking methods however can effect the vitamin content in red meat.
Freezing does not destroy vitamin K. However, exposure to high heat can degrade vitamin K levels in food. It is generally recommended to store foods high in vitamin K in cool and dark places to preserve their nutritional content.
Vitamin C is the nutrient most easily lost by the process of boiling. It is water-soluble and can leach out into the cooking water. To preserve vitamin C, it is recommended to cook vegetables for a shorter time or to use cooking methods that involve less water, such as steaming.
Vitamin C is a vitamin that is easily destroyed by light and irradiation. It is sensitive to heat and light exposure, meaning that storage and cooking methods can affect its concentration in foods. To preserve the vitamin C content, it is best to store foods rich in vitamin C in cool, dark places and avoid prolonged exposure to light.
no not cooking it but eating it does a little bit
No, there is no vitamin C soluble in vinegar.
Minimising contact with water, and cooking for the minimal time. e.g. Steam rather than boil, or eat raw or lightly cooked rather than overcooking. However, if you are eating raw fruit as snacks during the day, you will get vitamin C from that, so this issue is over-emphasized: you need adequate vitamin C in your diet overall, and cooking a few of the veg you eat is fine.
Fish Oil is enriched in Vitamin A, hence cooking of fish will not degrade the Vitamin A content.
it does not
Some minerals and vitamin A are also lost during cooking, although to a lesser extent. Fat-soluble vitamins D, E and K are mostly unaffected by cooking. Boiling results in the greatest loss of nutrients, while other cooking methods more effectively preserve the nutrient content of food.Steaming and boiling caused a 22 percent to 34 percent loss of vitamin C. Microwaved and pressure-cooked vegetables retained 90 percent of their vitamin C. The bottom line is that no one cooking or preparation method is superior for preserving 100 percent of the nutrients in a vegetable.Vitamin C is a water-soluble and temperature-sensitive vitamin, so is easily degraded during cooking, and elevated temperatures and long cooking times have been found to cause particularly severe losses of vitamin C