Nutrients tend to get lost in these preparations due to heat and oxidation. When the cells of the food are ruptured in any way, shape, and for, like how they tend to be during prepping or cooking, there will be loss of nutrients.
Yes. While some nurients may be lost in preserving, most are still there. Preserving could be canning, freezing, or drying foods.
enriched
He preserved food by pasteurization .
All fruits and vegetables can be preserved by canning.
food preservation is a preserved food
Generally, the longer you cook most foods, the more nutrients are lost. So, in many cases, burned food would be less healthy.
In 1960 people preserved food by freezing it. Food was also preserved by home canning or pickling methods and storage.
Food is preserved by curing with salt, smoking, pickling, drying, or canning.
Storing food is not a function of nutrients because nutrients are derived from food.
It spoils.
A refined food is a food that has had so much processing done to it that some of it's original nutrients have been lost. For example, wheat is ground into wholemeal flour, which can then be refined into white flour. Here, the germ and fibre are 'lost', diminishing nutrient content.
Food freshness and vitamin content can be preserved by chemicals.