Vitamins B complex and C are water soluble vitamins, meaning they dissolve in water. For this reason they pass easily into the blood in the process of digestion. However, water-soluble vitamins are not stored to any extent in the body tissue. Instead, any excess is excreted in urine. Since there are no reserves, your diet needs an adequate supply of foods that contain water-soluble vitamins every day.
Foods need to be cooked carefully so that water-soluble vitamins are not destroyed by heat or lost through steam or in cooking water. To retain water-soluble vitamins in fruits and vegetables, follow these tips
Cook fruits and vegetables quickly
Steam them, or use only small amounts of cooking water
Cover food during cooking.
Use leftover liquid in soups and stews