有些蔬菜含尼古丁

晨曦UID: 177893

　　尼古丁不单来自化成烟雾的烟草，也来自作为食品进入人体的多种蔬菜。

　　科学家经过长期研究，发现人们常用的蔬菜中，比如番茄、洋山芋、茄子和花菜等都含有数量不等的尼古丁。尤其是这些蔬菜如果未加烹饪而生吃，则进入人体的尼古丁数量会更多，由此而受到的伤害，会接近于烟雾弥漫中的被动吸烟。

　　生活中，人们习惯生吃或凉拌某些蔬菜，番茄就是这样。有人还认为，这样做可以代替吃水果。其实，番茄生吃，不仅营养受损，还相当于吸烟，使尼古丁混进了人体，那是不可取的。



来源：《生活日报》 （责任编辑：刘克）

aixiaoUID: 3343

我晕掉
最爱吃西红柿了，不过很久不生吃了倒是
不过，那也太那个啥了阿
啊。。。。。：（

bluenoteUID: 192080

这个资料来源比较可疑。
不仅原因可疑，结论“不仅营养受损，还相当于吸烟，使尼古丁混进了人体，那是不可取的。”也有些滑稽。
怀疑是某些同志为了骗小报稿费而编出来的伪科学。

我喜欢生吃番茄。挖哈哈哈。

顺便推荐一个免费的小游戏，炸弹人类别的，叫：
I Have No Tomatoes
地址：
到下面网页随便找一个地址（点击右边DOWNLOAD下面那一排，出现的新窗口上方有下载地址）：

http://prdownloads.sourceforge.net/tomatoes/tomatoes-win32-1.5.exe?download

晨曦UID: 177893

Pubmed 上顺手找了两篇文献：

J Agric Food Chem. 1999 Aug;47(8):3113-20. Related Articles, Links  

  
Determination of the nicotine content of various edible nightshades (Solanaceae) and their products and estimation of the associated dietary nicotine intake.

Siegmund B, Leitner E, Pfannhauser W.

Institute for Bio- and Food Chemistry, Department for Food Chemistry, Graz University of Technology, Austria.

This investigation was initiated as a result of proposals in the literature that dietary nicotine intake could contribute to the level of nicotine metabolites in biological fluids such as salivary cotinine concentration. Nicotine concentration was determined in several frequently consumed vegetables from the nightshade family (Solanaceae) (i.e., tomatoes, potatoes, aubergines, and peppers), as well as in some of their processed products. The edible Solanaceae fruit analyzed in this investigation were found to contain relatively consistent amounts of nicotine in the range of 2-7 microg/kg for fresh fruits. Nevertheless, the nicotine concentrations of the investigated tomato varieties decreased significantly with increasing degree of ripening of the fruits. In addition, a variety of black as well as green teas was investigated for the nicotine content. Nicotine content in tea leaves was found to be highly variable and sometimes much larger than in the Solanaceae fruits. On the basis of the observed concentrations and the respective food consumption data for different countries, a distributive analysis of the results suggests that the mean daily dietary nicotine intake for the population of the countries for which consumption data were available is approximately 1.4 microg/day, 2.25 microg/day at the 95th percentile.

PMID: 10552617 [PubMed - indexed for MEDLINE]

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1: Food Chem Toxicol. 1991 Dec;29(12):821-7. Related Articles, Links  


Dietary nicotine: a source of urinary cotinine.

Davis RA, Stiles MF, deBethizy JD, Reynolds JH.

Biochemical/Biobehavioral R&D, R. J. Reynolds Tobacco Company, Winston-Salem, NC 27102.

Foods, principally from plants in the family Solanaceae, and a number of teas were examined for the presence of nicotine. Dietary nicotine would give rise to cotinine in urine and compromise estimates of exposure to tobacco smoke that depend on urinary cotinine. All foods were homogenized, extracted and analysed for nicotine and cotinine by gas chromatography with nitrogen-sensitive detection (GC) and/or GC/MS (mass spectrometry). Weak acid and aqueous extracts of the teas were analysed in a similar manner. Nicotine was not detected (less than 1 ng/ml of extract) in egg plant or green pepper. The average values for nicotine in tomato and potato were 7.3 ng/g wet weight and 15 ng/g wet weight, respectively. Black teas, including regular and decaffeinated brands, had nicotine contents ranging from non-detectable to greater than 100 ng/g wet weight. Instant teas yielded the highest nicotine contents observed (up to 285 ng/g wet weight). The possible sources of nicotine in these foods are discussed. A range of potential values for urinary cotinine concentrations (0.6 to 6.2 ng/ml) was calculated based upon estimated average and maximal consumptions of these foods and beverages. Because of the potential for exposure to nicotine by way of these routes, the use of urinary cotinine as a biomarker of exposure to environmental tobacco smoke may be compromised.

PMID: 1765327 [PubMed - indexed for MEDLINE]

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好像的确如此。 汗

happly2000UID: 145339

哇,真的假的?偶的西红柿一直都是生吃的!

恩,反正俺也不抽烟,就当从西红柿里吸收点尼古丁好了:lol

晨曦UID: 177893

我也爱吃生的:(

新鲜多汁酸酸甜甜