Thursday, October 04, 2007
Only the Rat Knows! Organic IS Better!
In fact, the rats were better at telling the difference between organic and conventional foods than many humans have been. In the handful of carefully designed taste-offs reported in the last few years, people were often unable to identify the organic foods, and often didn’t prefer them.
This is puzzling, since organic produce generally does pack more antioxidants and other potentially healthful — and potentially flavorful — phytochemicals than conventional produce. Just last July, Professor Alyson Mitchell and colleagues at the University of California, Davis summarized 10 years of data from tomatoes grown in carefully controlled organic and conventional systems. The antioxidant contents varied from year to year, but were consistently higher in the organic tomatoes.
What do phytochemicals have to do with flavor? Phytochemicals are chemicals created by plants, and especially those that have effects on other creatures. Plants make many of them to defend themselves against microbes and insects: to make themselves unpalatable, counterattack the invaders and limit the damage they cause. Most of the aromas of vegetables, herbs and spices come from defensive chemicals. They may smell pleasant to us, but the plants make them to repel their mortal enemies.
Why should organic produce have higher phytochemical levels? The current theory is that because plants in organic production are unprotected by pesticides and fungicides, they are more stressed by insects and disease microbes than conventional crops, and have to work harder to protect themselves. So it makes sense that organic produce would have more intense flavors. For some reason, taste tests haven’t consistently found this to be the case.
Read More....
This is puzzling, since organic produce generally does pack more antioxidants and other potentially healthful — and potentially flavorful — phytochemicals than conventional produce. Just last July, Professor Alyson Mitchell and colleagues at the University of California, Davis summarized 10 years of data from tomatoes grown in carefully controlled organic and conventional systems. The antioxidant contents varied from year to year, but were consistently higher in the organic tomatoes.
What do phytochemicals have to do with flavor? Phytochemicals are chemicals created by plants, and especially those that have effects on other creatures. Plants make many of them to defend themselves against microbes and insects: to make themselves unpalatable, counterattack the invaders and limit the damage they cause. Most of the aromas of vegetables, herbs and spices come from defensive chemicals. They may smell pleasant to us, but the plants make them to repel their mortal enemies.
Why should organic produce have higher phytochemical levels? The current theory is that because plants in organic production are unprotected by pesticides and fungicides, they are more stressed by insects and disease microbes than conventional crops, and have to work harder to protect themselves. So it makes sense that organic produce would have more intense flavors. For some reason, taste tests haven’t consistently found this to be the case.
Read More....
Labels: health food, nature, organic, rats
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