The nutrient content of food can be significantly altered during cooking. The stability of a vitamin depends on several factors, including its solubility (in water or fat) and its sensitivity to heat, light, and oxygen.
Step 1: Understanding the Question:
The question asks to identify the vitamin that is most easily lost when vegetables are boiled.
Step 2: Detailed Explanation:
Vitamins are broadly classified into two groups:
Fat-soluble vitamins: A, D, E, K. These vitamins are not soluble in water and are relatively stable to heat. Therefore, they are not easily lost by leaching into boiling water.
Water-soluble vitamins: B-complex vitamins and Vitamin C. These vitamins can dissolve into the cooking water.
Let's analyze the given options based on this:
Vitamins (A), (B), and (D) are all fat-soluble and relatively heat-stable. Loss during boiling would be minimal.
Vitamin C (ascorbic acid) is not only water-soluble but also extremely sensitive to heat and oxidation. During boiling, it suffers from a double effect: it leaches out into the surrounding water and is also destroyed by the high temperature. This combination makes it the most susceptible to loss among the choices.
Step 3: Final Answer:
Vitamin C is the most susceptible to loss during the boiling of vegetables.