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Re: HYB: tangerine factor

  • Subject: [iris-photos] Re: HYB: tangerine factor
  • From: "irischap" <irischapman@netscape.net>
  • Date: Sun, 17 Oct 2004 03:57:46 -0000

Congratulations on your pigment extraction.
Unfortunatly, this is lycopene plus another pigment. I think I have
its name somewhere and will post it when I find it. 
I did a lot of extractons tonight just to clarify what is gong on with
tomato red. I took some pure tomato paste amd did six sequential
alcohol extractions. After each of these I filtered the paste and
squeased out the liquid. After the 6th extraction the alcohol exract
was almost colourless. This extract was a tangerine red. The tomato
paste remains were iris pink at this time. Then I did an oil
extraction and got lycopene. I can be fairly sure this was lycopene as
it is soluble in oil but not in alchohol. I had  a bloom of Pink
Attraction so did an extraction on it. First with alcohol. This
extraction was fairly light in colour but still very interesting. I
then did an oil extraction. This extraction was exactly the same shade
as as the tomato oil extraction after 6 alcohol extractions. Both were
an orangish-yellow and lighter then the alcohol  tomato extraction
which was more orange. A straight oil extraction of the tomato paste
got me a almost redish pigment which is a combination of the alcohol
extracted pigment and lycopene.

I will get some photos tomorrow  using natural light.

Chuck Chapman

--- In iris-photos@yahoogroups.com, Linda Mann <lmann@v...> wrote:
> Neil suggested I post a photo of the extracted tomato lycopene pigment,
> so here it is.  Apologies for the wretched quality of the photo.  I'll
> try to do another one later.
> The left container is Fantastic Orange Cleaner, the right is liquid Dial
> soap, the jar in the middle is unfiltered mushed up tomato.  The top
> layer is oil, bottom layer is alcohol/water mixture.  Residue of red
> tomato pulp has settled to the bottom.  If the photo weren't so blurred,
> you might be able to see that the lycopene in the oil layer of the
> tomato jar is the same red-orange of the Fantastic Orange Cleaner,
> rather than the more yellow or apricot orange of the Liquid Dial Soap.
> But they are all pretty close to the same color.
> For some reason, I was thinking that pure 'red' lycopene pigment would
> look red.  It didn't sink in that tttt is called <tangerine>, not
> <tomato> or <apple> factor, for good reason (i.e., it's tangerine
> colored, not apple or tomato red colored).
> I also did an extraction of dark red Impatiens (no photo), which had no
> oil soluble pigment, but turned the water/alcohol layer a beautiful
> clear pink.
> Will post some questions over in the discussion group.
> --
> 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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