Re: lycopene

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• Subject: Re: [iris] lycopene
• From: d*@eastland.net
• Date: Tue, 12 Oct 2004 20:27:33 GMT
• List-archive: <http://www.hort.net/lists/iris/> (Web Archive)

Charlotte,

Thanks for your post.  Now I wonder if Chuck, Linda or 
Neil know whether iris blooms contain betanin or 
anthoxanthin.

Donald Eaves
donald@eastland.net
Texas Zone 7b, USA

> A relative rare pigment in food is betanin (red beets, 
red chard 
> veins, prickly pear fruit).  I know it occurs in some 
flowers but 
> have not hear any of you mention it in iris.  It also is 
water 
> soluble, but when treated with a base, the color goes 
rusty brown-red 
> instead of blue.
> 
> Anthoxanthins get overlooked because they are white to 
cream or pale 
> yellow. They are water soluble and pH sensitive.  The 
addition of 
> soda can shift the color to yellow and helps one see if 
they are 
> present.  (They are also the reason for the 
recommendation to cook 
> cauliflower with a pinch of cream of tartar so that the 
pH is shifted 
> to the acid side and the cauliflower ends up nice and 
white.)


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