[Herbalist] Help-- toxicity data?

[Lois Perry]

"Kathleen H. Keeler" wrote:

> > I'm working on an egg-dyeing project, and am suddenly looking at the
> > toxicity of period
> > dyestuffs that might have been used on eggs-- and can can't find this listed
> > in my books. The
> > dyestuffs I'm interested in are:
> > - madder
>
> First edition PDR for Herbal Medicines says
> "madder root contains lucidin. Lucidin is positive in various bacterial strains
> using the Ames test.  The substance induces concentration-dependent gene
> mutations and DNA strand cleavage.  Therefore, there exists a strong indication
> that lucidin is mutagenic and carcinogenic"

Hello

What is the "First edition PDR for Herbal Medicines"

Branwen filia Iohannes de Monmouth
Barony of Ruantallan