(Hive Addict)
04-10-03 00:45
No 425343
      Ephedrine Compilation
(Rated as: excellent)

Brian T. Schaneberg, Sara Crockett, Erdal Bedir and Ikhlas A. Khan. The role of chemical fingerprinting: application to Ephedra. Phytochemistry 62(6) (2003) 911-918

Abstract - Ephedra sinica ,known as Ma Huang ,is one of the oldest medicinal herbs in Traditional Chinese Medicine (TCM).Preparations, namely teas,of E.sinica have been used for over 5000 years as a stimulant and as an antiasthmatic.In the West, extracts of E.sinica, E. intermedia or E. equisetina are most commonly used in dietary supplements as a stimulant and to promote weight loss. More than 50 species of Ephedra are native to both hemispheres, but the detection of ephedrine alkaloids has been limited to species in Eurasia. Currently, methods exist to quantitate the ephedrine alkaloids in extracts of plant material or dietary supplements, but the methods are not able to verify the extract is of an Ephedra species. Reverse phase high performance liquid chromatography with photodiode array detection was applied for the chemical fingerprinting of the Ephedra species.Two regions of comparison were determined in the chromatograms at 320 nm. The series of peaks between 52 and 64 min confirms an Ephedra species is being analyzed. The aforementioned peaks also could distinguish between Ephedra species from Eurasia, North America and South America. Peaks at ca. 57 and 59 min were isolated and determined to be two new compounds,4-(2-eicosyloxycarbonylvinyl)-benzoic acid and 4-(2-docosyloxycarbonyl-vinyl)-benzoic acid respectively. Authentication of ground plant material as Ephedra can be achieved by this chemical fingerprinting method.


The faster you run, the quicker you die.
(Chief Bee)
04-15-03 16:08
No 427072
      Phytochemistry 62(6) (2003) 911-918  Bookmark   

Phytochemistry 62(6) (2003) 911-918 (../rhodium/pdf /ephedra.chemical.fingerprinting.pdf)
(Hive Bee)
09-07-03 15:54
No 457645
      damaged file  Bookmark   

Tried to d/l the file and recieved an error stating it could not be repaired.
(Hive Bee)
09-09-03 10:40
No 457931
      Re: Damaged link....  Bookmark   

Try pasting this on the address window of your browser.....

../rhodium/pdf /ephedra.chemical.fingerprinting.pdf

We're  all in this world together,
(Hive Bee)
09-09-03 18:35
No 458037
      file damaged error must be local  Bookmark   

Thanks java...unfortunately I get the same error message...plus a new error on connect using just the link...I'll look into reinstalling acrobat.
(Hive Bee)
09-09-03 23:43
No 458089
      Have you tried...  Bookmark   

Have you tried right clicking the shortcut and choosing

"save target as"?

Even if you don't have acrobat installed you should still bee able to download the file.

It wasn't Me!
(Chief Bee)
09-15-03 10:29
No 459217
      It should work now  Bookmark   

I have re-uploaded the file now, and it works for me. If it still doesn't work for you, try installing the latest version of Adobe Acrobat (http://www.adobe.com/products/acrobat/readstep2.html).