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[百科] 气味也许会是营养的信号

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发表于 2011-10-27 08:14:13 | 显示全部楼层 |阅读模式
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 空气中充斥着各种味道,很多动植物也有其本身的味道。当人们闻到一些味道的时候可以很容易分辨出是哪些熟识的物品,那么这些独特的味道除了表明物体本身的身份外,是否还有其他含义呢?
  切西红柿时,从上传来的新鲜植物清香,似乎正在通过的它的方式告诉你“我对你有好处”。
  的确,通过鼻子的辨认,那些从姜等食物上散发出的气味,也许是营养的信号。“通过喜欢的味道与不喜欢气味的调查,说明我们闻到的气味与营养价值有关。”研究人员史蒂芬·A·高夫和哈里·J·克里将他们的这项成果发表在《科学》期刊中。
  然而,他们也提醒很多蔬菜的种植方式对于这些植物并不好,人们应该更重视()的质量,比如颜色、形状、出产量和抗病情况,而非营养和味道。
  味道不是最重要的
  对于动植物来讲,气味是复杂且具有独特挑战性的,他们注意到,气味不是最重要的。
  比如用番茄举例:克里和高夫分析了两种番茄,野生的和为了销售而养殖的“公爵花”。在商业用途的番茄中,一种影响颜色、糖、酸和挥发性化合物,并与气味混合的化学物质被降低。
  比如,与“番茄”或者“植物”气味混合的挥发性化合物中的一种被叫做同边-3-己烯醛,并且它还是人类中一种重要脂肪酸的指示剂。他们发现,在野生番茄中,这种化学物质的含量比商业用途的番茄高出三倍。
  另外组成番茄气味的还有两种主要物质:2-和3-甲基正丁醛。它们是一种重要的基本()存在的指示剂,同样,这两种化学物质在野生番茄中的含量也比商业用途的番茄高出三倍。
  除番茄之外,那些化学物质也是草莓、面包、红酒和味道的重要组成部分。
  不同气味对身体健康影响不同
  高夫和克里还注意到,在许多香料里的气味化合物的产生同健康有关。举个例子,存在姜黄中的姜*违禁词过滤见谅*环⑾志哂锌狗⒀椎奶匦

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发表于 2011-10-27 10:05:54 | 显示全部楼层
楼主说的在理.
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发表于 2011-10-27 12:47:40 | 显示全部楼层
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