評論
打印
Vitamin E is the next fat soluble vitamin we will discuss.
我們接下來討論的脂溶性維生素是維生素E
Any ideas on what role vitamin E might have in the body?
有人知道維生素E在人體內的作用嗎?
The chemical structures of vitamin E are complicated.
維生素E的化學結構很復雜
There are 8 different forms of vitamin E known
已知的維生素E有8種
however Alpha-Tocopherol is
但α-生育酚
the most active form of vitamin E in humans.
是在人體中最活躍的一種維生素E
The main function for this vitamin is
這種維生素的主要功能是
as an antioxidant in the membranes of the cells.
作為細胞膜的抗氧化劑
All cells of the body are surrounded by
人體的所有細胞外都包裹著
a membrane that contains fat,
一層含有脂肪
cholesterol and various proteins.
膽固醇,和多種蛋白質的膜
Vitamin E interdisperses with the fats in the membrane
維生素E分散在細胞膜的脂肪中
and binds to oxidative agents that attack the fats.
與進攻細胞膜脂肪的氧化基團結合
In this role vitamin E has been found
由于具有抗氧化作用
to have a wide range of benefits to the body including
人們發現維生素E對身體有很多益處
a protective effect on cardiovascular disease and cancer.
包括對于心血管疾病和癌癥的預防保護
Antioxidants protect the body from free radicals
抗氧化劑能保護人體,清除自由基
which can damage the cell
這些自由基會破壞細胞
and contribute to the development of
并且加劇
cardiovascular disease and certain types of cancer.
心血管疾病和某些腫瘤的生長
However research to study the role of
然而補充維生素E
supplementing vitamin E to prevent heart disease
對于預防心臟疾病
or cancer have not been very successful.
或癌癥的研究并沒有獲很大進展
Vitamin E is a scavenger of oxidation agents in the body
維生素E可以說是人體內氧化性物質的清除專家
collecting the free radicals
它會收集自由基
and providing a defense against tissue damage.
為人體組織提供一道有效的保護屏障
Therefore having an adequate supply
所以攝入足量的
of vitamin E is important.
維生素E十分重要
However taking large amounts of supplements
然而服用大量補品
do not seem to be of much value.
似乎不那么有用
Vitamin E has also been shown to aid
還顯示維生素E有助于
in the healing of wounds
傷口愈合
because of its role in cell proliferation
這都是因為它在細胞增殖
and free radical protection.
及自由基保護中的作用
Here are the recommended intakes of vitamin E.
這里是推薦的維生素E攝入量
Again we see the use of IUs
我們再一次用到國際單位
because of the many chemical forms of vitamin E.
因為維生素E有多種化學形式
You may also see vitamin E expressed as TE
你們也可能看到維生素E被稱為TE
or tocopherol equivalents.
或者生育酚等價物
This refers to the chemical name of vitamin E,
這是指維生素E的化學名稱
tocopherol and the most active form alpha-tocopherol.
生育酚及其最具活性的形態α-生育酚
Men and women over the age of 14
14歲以上的男性和女性每天
should consume approximate 22.5 IUs
應攝入22.5國際單位
or 15 milligrams per day.
或15毫克
During pregnancy the recommendation
懷孕期間推薦的攝入量
stays the same however during lactation
與此相同,但哺乳期間
the recommendation increases to 28.5 IUs
推薦的日攝入量增加到每天28.5國際單位
or 19 milligrams per day.
或19毫克
Vegetable oils, nuts, green leafy vegetables
植物油,堅果,綠葉菜
and fortified cereals are common sources of vitamin E.
及強化谷物是維生素E的常見食物來源
There has never been any known deficiency of vitamin E
至今還沒有人類缺乏維生素E
with defined symptoms in the human, presumably
的典型癥狀
because vitamin E is so widely available in foods.
可能是因為維生素E是如此廣泛存在于食物中
Leafy green vegetables are
綠葉菜也是
also good sources of vitamin E as well as grains
補充維生素E很好的食物來源
such as fortified cereals and wheat germ.
像強化谷物和麥芽這樣的谷類也是
Avocados, peanut butter and tomato sauce
鱷梨,花生醬,及番茄醬
are also good sources of vitamin E.
也是補充維生素E很好的選擇
