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本帖最后由 丁丁咚 于 2013-7-16 05:42 编辑
山菊 发表于 2013-7-16 01:53
我以前也老用微波炉做米饭,后来网上老有人说微波炉不好,我想完全不用做不到,少用点吧~~~就去买了电饭 ...
你还做过红糟啊?厉害!不过我怀疑红糟和糟卤是不是也不是一个东西啊?
另外谢谢姐姐的提醒,不过呢,微波炉不好的说法我也听过很多,但我翻很多所谓的宣传材料,在我看来,大多数是道听途说和丰富的想象力,真正有科学道理的不多,进行了严谨的实验证明的更是凤毛麟角。
我从wikipedia上摘了一段,虽然我也不能说这些结论一定就可靠,但我觉得至少可以说明,微波炉发明了近60年,有这么多反对意见,但至少目前来说,还是没有任何确凿的科学实验支持微波炉不好这个笼统的说法。想想那么多已经多方证明了对人体不好,大家还照样吃得开开心心的东西(比如油炸食品、烟熏食品啥的),我在这方面的顾虑基本就打消了。(当然,电饭煲我还是用的,微波炉只是拿来热米饭的 )
对了,还要感谢你那个茄子一半微波一半炒的做法,彻底解决了我爱吃茄子又不喜欢开油锅的问题啊!
Effects on food and nutrients
Several studies have shown that if properly used, microwave cooking does not change the nutrient content of foods to a larger extent than conventional heating, and that there is a tendency towards greater retention of many micronutrients with microwaving, probably due to the shorter preparation time.[24] Microwaving human milk at high temperatures is contraindicated, due to a marked decrease in activity of anti-infective factors.[25]
Any form of cooking will destroy some nutrients in food, but the key variables are how much water is used in the cooking, how long the food is cooked, and at what temperature.[26] Nutrients are primarily lost by leaching into cooking water, which tends to make microwave cooking healthier, given the shorter cooking times it requires.[27] Like other heating methods, microwaving converts vitamin B12 from an active to inactive form. The amount inactivated depends on the temperature reached, as well as the cooking time. Boiled food reaches a maximum of 100 °C (212 °F) (the boiling point of water), whereas microwaved food can get locally hotter than this, leading to faster breakdown of vitamin B12. The higher rate of loss is partially offset by the shorter cooking times required.[28] A single study indicated that microwaving broccoli loses 74% or more of phenolic compounds (97% of flavonoids), while boiling loses 66% of flavonoids, and high-pressure boiling loses 47%,[29] though the study has been contradicted by other studies.[30] To minimize phenolic losses in potatoes, microwaving should be done at 500W.[31]
Spinach retains nearly all its folate when cooked in a microwave; in comparison, it loses about 77% when cooked on stove, because food on a stove is typically boiled, leaching out nutrients. Bacon cooked by microwave has significantly lower levels of carcinogenic nitrosamines than conventionally cooked bacon.[26] Steamed vegetables tend to maintain more nutrients when microwaved than when cooked on a stovetop.[26] Microwave blanching is 3-4 times more effective than boiled water blanching in the retaining of the water-soluble vitamins folic acid, thiamin and riboflavin, with the exception of ascorbic acid, of which 28.8% is lost (vs. 16% with boiled water blanching).[32] |
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