HYB: pigments, Mystery Blush

After letting the last extractions sit for a while, it looked like there
might have been some sediment in the water/alcohol extraction that was
contributing to the orange color, which was a bit murky.  So I repeated
the extraction today using more flower, less solvent, and filtering the
extract.

Wierd looking!  The water/alcohol extraction in more concentrated form,
after filtering (coffee filter), now looks brown rather than apricot and
is not just murky, but almost opaque.

Oil extraction is typical carotene red-orange.

I took some photos, but want to let it sit again to see if there is some
colloidal something or other that will settle out (it reminds me of iron
oxide? colloids we made in some university class umpteen decades ago).

Is there another solvent that would separate the anthocyanin from other
water/alcohol soluble pigments?

I haven't had the heart to sacrifice freshly opened blooms, which has me
wondering if I'm getting some altered pigments as the bloom ages.  ??
Doesn't seem to happen to dark purple pigments, or strong yellows, which
are still there when the flowers are slimy mush, but...

Help, Chuck, are you there?

--
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.korrnet.org/etis>
American Iris Society web site <http://www.irises.org>
talk archives: <http://www.hort.net/lists/iris-talk/>
photos archives: <http://www.hort.net/lists/iris-photos/>
online R&I <http://www.irisregister.com>

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