Composition
of Pueraria Mirifica
Our researcher has started research on
Pueraria Mirifica since 1991
and then later on Butea.
The compounds that make Pueraria Mirifica different from any other
phyto-estrogen containing plants in the Family Leguminous are Miroestrol
and Deoxymiroestrol, which possess highest estrogenic activity among
the known phyto-estrogens due to structural similarity to estradiol,
Miroestrol was actually the first compound isolated from this plant
by a group of German chemists in 1940, but the plant had been mistakenly
reported then as Butea Superba. It was later on classified as a new
plant called Pueraria Mirifica Airy Shaw et Suvatabhandu.
The isolation and identification of deoxymiroestrol from
the root of Pueraria Mirifica has just been reported in the February
2000 issue of the Journal of Natural Products, The authors proposed
that since deoxymiroestrol is easily oxidized to miroestrol, deoxymiroestrol,
not the previously reported miroestrol, is more likely to be the actual
chemical constituent of Pueraria Mirifica.
...However, it is very likely that the two phyto-estrogens coexist
in the root of this plant. As shown below, the chemical structures
of two compounds are very similar to that of estradiol, the main human
estrogen.
In addition to miroestrol and deoxymiroestrol, Pueraria Mirifica also
contains other chemicals that belong to isoflavones and Coumestan
groups of phyto-estrogens, e.g., Genistein, Daidzein, Daidzin, Genistin,
and Coumestrol that are usually found in soybeans (Table 1). However,
the estrogenic activity of Miroestrol and Deoxymiroestrol is much
more potent than that of soy isoflavones.
Table
1: Chromene, Isoflavonoid and Coumestan derivatives in Pueraria
Mirifica |
Chromene |
Isoflavones |
Isoflavones
glycosides |
Coumestan |
Miroestrol |
Daidzein |
Daidzin |
Coumestrol |
Deoxymiroestrol |
Genistein |
Genistin |
Mirificoumestan |
|
Kwakhurin |
Mirificin |
Mirificoumestan
glycol |
|
Kwakhurin hydrate |
Puerarin |
Mirificoumestan
hydrate |
|
|
Puerarin-6" monoacetate |
|
What is benefit effects of Chemical
composition from Pueraria Mirifica?
........While Soya and Alfalfa contains low amount and low estrogenic
of the phyto-estrogens, many researches pointed out the benefit effects
of those chemicals, especially to act as a Potent Anti-Breast Cancer,
Anti-Prostate Cancer, Anti-Colon Cancer, Anti-Cardio-Vascular disease
via the reduction of blood cholesterol and also Anti-Menopausal Syndrome.
The phyto-estrogens in the Pueraria Mirifica (White Kwao Krua) is
more concentrated and higher efficacy. By this distinguish property,
biotechnology application has shown up for this herb. Source
by: Medical Plant Research Institute Department
of Medical Sciences, Ministry of Public Health, Thailand.
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