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leafy greens question


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#1 dear mrclock

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Posted 07 January 2013 - 04:31 AM


lots of recommendation on eating some what consider the healthiest foods the leafy greens and from what i have seen, they do have exception nutrition especially vitamin a, c and k.
here is what i want to ask about tho, vitamin a is carotenoids that is what gives the bright red, orange, any bright color to various plants, bugs, birds, fish etc. so can someone explain to me, how can green plants actually have carotenoids if they are colorless beyond the obvious green ? im questioning the vitamin a content of those crazy praised plants. there is no possible way they contain vitamin a precursors at all ! and i know some might say chlorophyll is what keeps them green, carotenoids must still be present one way or another and be noticable if they are in HIGH AMOUNT as it is stated those plants to possess. can any person scientificually, surely confirm they do contain such high amount of vitamin a ? and if they do, how can such high amount of carotenoids be covered by a mare amount of chlorophyll ?
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#2 niner

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Posted 10 April 2013 - 11:57 AM

It's the same as with the leaves of deciduous plants. We think they "turn red" in the fall, but the red was there all along. What really happened is that the green went away. The chlorophyll is highly absorptive in the blue-purple and in the red-orange. Carotenoid absorptions tend to be closer to the green, where chlorophyll doesn't absorb. Chlorophyll is a stronger absorber, and/or it's present at higher concentration than the carotenoids.
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