国内的报纸编辑不用验证稿件的吗?这简直是是胡说,阿

来源: ephd 2008-09-18 19:39:45 [] [旧帖] [给我悄悄话] 本文已被阅读: 0 次 (1080 bytes)
先不说VB12是干什么的, 就连是怎么来的也不是文中说的那样.
这东西根本就是细菌合成的, 和吃什么东西没有什么鸟关系.

(下面文字的资料来源是维基百科 http://en.wikipedia.org/wiki/Vitamin_B12 )
......
Vitamin B-12 is the name for a class of chemically-related compounds, all of which have vitamin activity. It is structurally the most complicated vitamin. Biosynthesis of the basic structure of the vitamin can only be accomplished by bacteria, but conversion between different forms of the vitamin can be accomplished in the human body. A common form of the vitamin, cyanocobalamin, does not occur in nature, but is used as a supplement and food additive, due to its stability. It is converted to other forms of the vitamin which are actually used in chemical reactions in the body.

.....

Vitamin B-12 cannot be made by plants or animals[5] as only bacteria have the enzymes required for its synthesis. The total synthesis of B-12 was reported by Robert Burns Woodward[6] and Albert Eschenmoser,[7][8] and remains one of the classic feats of organic synthesis.

所有跟帖: 

回复:国内的报纸编辑不用验证稿件的吗?这简直是是胡说,阿 -炎者无罪- 给 炎者无罪 发送悄悄话 (97 bytes) () 09/19/2008 postreply 06:14:26

请您先登陆,再发跟帖!

发现Adblock插件

如要继续浏览
请支持本站 请务必在本站关闭/移除任何Adblock

关闭Adblock后 请点击

请参考如何关闭Adblock/Adblock plus

安装Adblock plus用户请点击浏览器图标
选择“Disable on www.wenxuecity.com”

安装Adblock用户请点击图标
选择“don't run on pages on this domain”