The Importance Of B-Group Vitamins Vitamin B1-Thiamine More B-group Vitamins  Vitamin B1 orThiamine,as it is more commonly referred to now,is one of the most important members of the B group of vitamins.Heat applied in cooking destroys this vitamin.The loss is significant when vegetables are cooked in excessive water which is thrown away afterwards.The addition of sodium carbonate(cooking soda)in some vegetables further increases the destruction of this vitamin. Functions in the Body:Thiamine promotes growth,protects the heart muscle, and stimulates brain action.It plays an important role in the normal functioning of the entire nervous system.It aids digestion,especially of carbohydrates.It has a mild diuretic effect:that is it increases urine formation.It improves peristalsis and helps to prevent constipation.It also helps to maintain the normal red blood count,improves circulation, and promotes a healthy skin.It protects against the damaging effect of lead poisoning, and prevents oedema or fluid retention in connection with heart ailments.It also reduces fatigue,increases stamina,and prevents premature ageing and senility by increasing mental alertness.Like other vitamins of the B complex group,it is more potent when combined with other B vitamins rather than used separately. Sources: | Fruits | mcg | milk&milk products | mcg | | apricots | 220 | cow's milk-skimmed | 450 | | pineapples | 200 | wholemilk powder | 310 | | bael fruit | 130 | Khoa,cow's | 230 | | melons | 110 | | | | nuts&oilseeds | mcg | pulses&legumes | mcg | vegetables | mcg | cereals | mcg | | groundnuts | 900 | soya beans | 730 | lotus stems | 820 | Rice bran | 2,700 | | pistachio nuts | 670 | split bengal gram | 480 | capsicums | 550 | wheat germ | 1400 | | mustard seeds | 650 | split green gram | 470 | turnip greens | 310 | wheat flour | 490 | | cashew nuts | 630 | peas,roasted | 470 | beet greens | 260 | barley | 470 | | walnuts | 450 | lentil | 450 | colocasia leaves | 220 | rice(parboiled) | 270 | | chilgozas | 320 | moth beans | 450 | radish leaves | 180 | maize | 420 | | almonds | 240 | split red gram | 450 | potatoes | 100 | | | | | split black gram | 420 | | | | | | Values per 100g edible portions | |