Plantago lanceolata (fwd)

Han Asard hanasard at ruca.ua.ac.be
Wed May 6 01:48:50 EST 1998


Dear Colleagues,

The question below was posted to me. However, since we are not at all
specialists in this field, I am passing it on to the group, hoping that
someone here may have some answer, know somebody who does or could send it
on to another more appropriate newsgroup.

Thanks a lot,
Han

  ------------------------------------------------------------
     _/     _/    _/     Han ASARD
    _/     _/   _/ _/    University of Antwerp
   _/     _/  _/    _/   Department of Biology (RUCA)
  _/     _/  _/_/_/_/    Groenenborgerlaan 171, B-2020 Antwerp
  _/    _/  _/    _/     Ph: +32-3-2180415, Fx: +32-3-2180417
  _/_/_/   _/    _/      e-mail: hanasard at ruca.ua.ac.be
  ------------------------------------------------------------

---------- Forwarded message ----------
Date: Tue, 05 May 1998 14:15:43 +0200
From: Patrick Vermeersch <p_vermeer at eae-group.com>
To: Han Asard <hanasard at ruca.ua.ac.be>
Subject: Re: Plantago lanceolata: inhoudsstoffen

Han,

I'm anxiously looking for the detailed list of the known constituents of
Plantago lanceolata and major. I've found some information in books and on
the web, however I still have some questions, doubts and found some
contradictions ...

Who can help me with the following questions:

1. Phytochemical analysis, which also explains the present constituents in
more detail. Quantity (%) in the whole plant, the leaves, root and seeds.

2. Which plant of the plantaginaceae family has now the most medical
strength, major or lanceolata ? Some sources say major, other say lanceolat=
a.

3. Glycosid: aucubin, Irridoid-glycosid: aucubigenin, =DF-glucosidase.
- As I understood aucubin resides in the plant en through 'hydrolysis' one
will get aucubigenin because of the influence with =DF-glucosidase ?
Where does that =DF-glucosidase come from and what is it exactly ?
- When eating the plant or drinking the juice (sap) and as there's no
hydrolysis involved here, how can one take benefit of aucubigenin. Or can
we not just drink the sap ?
- What exactly is an irridoid-glycosid ?
- The working part is the aucubigenin ?
- Is the next line I've read in a book correct: "Aucubin can cause
gastro-enteritis and central depressing effects after taking in (oral)".

4. Cooking.
Many sources mention that the plant (parts) or the sap should be cooked
(some say up to 20 min.). As we all know this is not always good for the
present constiuents, which can lose their effect (e.g. mucus) What about
aucubin, will it also be destroyed when cooking ?
What about other constituents ?

5. The root, is it toxic ? Some sources say it is, others say to cook it
first, others don't mention anything at all.

Thank you in advance
Patrick




More information about the Plant-ed mailing list