Wow, I could have had a V8. Beth Koch wrote:
Hey Paul, I am going to copy and paste this info to a sheet and give it to my docs. They are forever selling this a veg based dye ( you know...carrots, tomato...) you gave some great food for thought!!! Thanks Beth Koch COT, ROUB Retina Consultants of WNY bethkoch@xxxxxxxxxxxxx bkoch@xxxxxxxxxxxxx (716)908-4105What we have done for ourselves, alone dies with us,What we do for others and the world remains and is immortal.... ~Albert Pike -----Original Message----- From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of Montague, Paul R Sent: Friday, July 09, 2010 5:54 PM To: optimal@xxxxxxxxxxxxx Subject: [optimal] Re: Vegetable Dye That's a Euro tree. Money grows on it. Montague-----Original Message----- From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of William Anderson Sent: Friday, July 09, 2010 2:51 PM To: 'optimal@xxxxxxxxxxxxx' Subject: [optimal] Re: Vegetable Dye Paula WHAT, I thought it came from the Fluoreo tree that grows out in West Texas and in the mountains in Utah. I heard the way it was discovered was when the Glow Injuns were hunting Jacklopes at night under a blue moon after the Jacklopes had eaten berries off of the Fluoreo tree all day BillPaula Morris <paula.morris@xxxxxxxxxxxx> 7/9/2010 2:07 PM >>>Hey Sarah, The rumor exists because it was stated to be a vegetable dye extracted from a plant resin first by Duke-Elder, and then by J Federman in the Intravenous Fluorescein Angiography chapter in Duane's Clinical Ophthalmology, 1991. That has since been corrected in more recent editions of Duane's. Fluorescein's basic component is naphthalene (an extract from the carbolic acid fraction of coal tar). It is heated with mercury sulfate and copper sulfate to 400-500 degrees Celsius to become phthallic anhydride. It is then heated with resorcinol to 200 degrees C. to become resorcinolphthalein, or fluorescein, which is highly insoluble. When resorcinolphthalein is dissolved in sodium hydroxide solution, it becomes fluorescein sodium which is highly soluble and what we use in retinal angiography. Why do I know this? Because our own Joe Warnicki challenged me back in 1990 to research "Where Does Fluorescein Come From?" That quest led me to research HJ Conn's biological Stains, the Merck index: An Encyclopedia of Chemicals, Drugs and Biologicals, Remington's Pharmaceutical Sciences, and Drug Facts and Comparisons. Fluorescein Sodium is a synthetic dye assigned by the government to be called F,(food), D (drugs), & C(cosmetics) color yellow #8. The F,D,C colors are only given to synthetic dyes. So - it has a vegetable base if you want to harken back to pre-historic history as plants contributed to the formation of coal deposits, but more recently I think you could safely say it has a mineral source - naphthalene, ths tuff that makes moth balls stink. Probably don't want to tell you patients that............... And Thus endeth the chemistry lesson! p From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of Sarah Moyer Sent: Friday, July 09, 2010 10:06 AMTo: optimal@xxxxxxxxxxxxx Subject: [optimal] Vegetable DyeJuly is here and so are the new residents! During a lecture/discussion about fluorescein sodium yesterday, we discussed how fluorescein sodium is a synthetic dye and NOT a vegetable dye. One of them had already read/heard it was a vegetable dye. He asked if there were ever ingredients in the dye that were vegetable based and if that is why this rumor exists. Does anybody know why some people refer to it as a vegetable dye? Thanks! Sarah Moyer University of North Carolina
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