Roast sweet potato can't eat street with skin eat roast sweet potato attention to four

09:23 March 28, 2016

Source: the family doctor online

Street often have selling roast sweet potato, this can be evoked a lot of people and lazier. But the roast sweet potato outside often have food safety concerns, what should we pay attention to, and see it together.

Sweet potato in effective anti-cancer substances

As is known to all, sweet potato is very rich in nutrition. More valuable is, however, in Japan's national cancer institute recently released 20 kinds of cancer-fighting vegetables "list" of sweet potatoes also.

Cancer cells from human epithelial cells, and sweet potatoes are rich in starch, carotene, and more than 10 kinds of trace elements such as potassium, iron, can protect the structural integrity of epithelial cells of the body, suppress the virus activity, blocking the production of nitrosamines in the gastrointestinal tract, eliminate food or environment caused by mercury, cadmium, arsenic and other toxic effect, carcinogenic process of blocking toxic metals. Sweet potato by experts as the most balanced nutrition health food.

And unique in sweet potato dhea - a kind of adrenal gland secretion and androgen steroids, similar to that of both can prevent cancer and can prolong life.

Should pay attention to eat roast sweet potato street at 4 o 'clock

1, choose sweet appearance

Choose shiny surface is smooth, clean, hard, and the surface is uneven, has a small black hole is not fresh, sweet potato rot inside may have been, not to buy it.

2, according to the appearance distinguish texture

Don't pick on round, rectangular, taste better. White skin to red one, the hearts of sweet potato, taste like a pumpkin, not too sweet. Red one TianNuo.

The choice of shape and taste sweet potato in general points yellow flesh sweet potatoes and white flesh sweet potatoes. A long yellow flesh sweet potatoes in shape, skin pale pink, sugar, boiled pulp after a titian, sweet and delicious; And white flesh sweet potatoes are fat shape, skin dark red or purple, starchy, after cooked white flesh, tastes sweet and surface. Can undertake choosing according to their own taste.

3, do not eat the skin

Nowadays of hot roast sweet potato, sweet and delicious, sometimes also bake out "oil". Sweet potato skin composition, more popular, many people even continue to eat together.

Eat roast sweet potato, experts say, it is best not to peel, because of the sweet potato skin contains many alkaloids, eating too much can cause gastrointestinal discomfort. Especially the sweet potato with a black patch on the skin cannot eat more, can cause poisoning.

4, and street use coal or pollution

Sweet potatoes in the baking process not only by the toxic substances in coal burning pollution, some coal contains radioactive substances and poisonous and harmful material such as arsenic. Eat roast sweet potato, can lead to chronic arsenic poisoning, severe cases can damage the digestive system, respiratory system. Recommend at home cooking, choose ripe sweet potatoes, also can bake out "oil" sugar, sweet and nice.

What kind of people should not eat sweet potato?

Diarrhea patients and diabetic people not to eat sweet potatoes. Stomach trouble, people can't eat too much so as to avoid bloated stomach.

Eat sweet potato nausea?

Sweet potato contains a substance called "gasification enzyme", in the human gastrointestinal can produce a large amount of hydrochloric acid in gastric juice, make the person eat after heartburn, nausea, vomiting, acid water. Therefore, to correctly grasp the sweet potato eat, such as sweet potatoes and rice flour collocation edible, consumption and control the time; Eat sweet potatoes, with some pickles and salty soup; When processing the steamed sweet potato cooked, the use of steam to destroy most of the gasification enzyme; Use a small amount of alkali or alum, salt solution immersion raw sweet potatoes, mature and then processed food.

How to homemade roast sweet potato at home

Ingredients: 2 sweet potatoes

Practice: 1, the sweet potato scrub clean, keep the surface moisture. 2, respectively with the kitchen foil sealed; 3, in a microwave, high fire 7 minutes, flip to high fire 5 minutes (depending on the sweet potato used to adjust the size and quantity of the time).