據研究:
養生甘薯含有豐富的澱粉、維生素、纖維素等人體必需的營養成分,還含有豐富的鎂、磷、鈣等微量元素和亞油酸等。這些物質能保持血管彈性,對防治老年習慣性便祕十分有效。
遺憾的是,人們大都以為,經常食用甘薯會使人發胖,因而不敢食用。其實,恰恰相反,甘薯是一種老幼皆宜的理想減肥食品,它的熱量只有大米的1/3,而且因其富含纖維素和果膠而具有阻止糖分轉化為脂肪的特殊功能。甘薯中還含有一種類似雌性激素的物質,對保護人體皮膚,
延緩衰老有一定的作用。因此,國外許多女性把甘薯當作 駐顏美容食品。
美國公共利益科學中心推薦甘薯為第一營養食品
原文來自:http://www.foodreference.com/html/sweet-pot-nutrition.html
SWEET POTATO NUTRITION
Sweet Potato Ranks Number One In Nutrition
According to nutritionists at the Center for Science in the Public Interest (CSPI), the single most important dietary change for most people, including children, would be to replace fatty foods with foods rich in complex carbohydrates, such as sweet potatoes.
CSPI ranked the sweet potato number one in nutrition of all vegetables. With a score of 184, the sweet potato outscored the next highest vegetable by more than 100 points. Points were given for content of dietary fiber, naturally occurring sugars and complex carbohydrates, protein, vitamins A and C, iron and calcium. Points were deducted for fat content (especially saturated fat), sodium, cholesterol, added refined sugars and caffeine. The higher the score, the more nutritious the food.
Sweet potato baked 184
Potato, baked 83
Spinach 76
Kale 55
Mixed Vegetables 52
Broccoli 52
Winter Squash, Baked 44
Brussels Sprouts 37
Cabbage, Raw 34
Green Peas 33
Carrot 30
Okra 30
Corn on the Cob 27
Tomato 27
Green Pepper 26
Cauliflower 25
Artichoke 24
Romaine Lettuce 24
Sweet Potato Nutrition Facts(甘薯營養成份含量)
(for one medium size sweet potato)
Calories 130
Fat 0.39 g
Protein 2.15 g
Net Carbs 31.56 g
Dietary Fiber 3.9 g
Calcium 28.6 mg
Sodium 16.9 mg
Potassium 265.2 mg
Folate 18.2 mcg
Vitamin C 29.51 mg
Vitamin A 26081.9 IU
Source: US Department of Agriculture(來源: 美國農業部門)
Among root vegetables, sweet potatoes offer the lowest glycemic index rating. That’s because the sweet potato digests slowly, causing a gradual rise in blood sugar so you feel satisfied longer. It’s time to move sweet potatoes to the "good" carb list. Many of the most popular diets these days have already.