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Two findings related to Equol
1. Equol-producing bacterium was isolated from the human intestine
2. Equol production from glycitein was confirmed

From Fujicco's studies related to equol, the outlines of two most recent reports are presented:

Fujicco isolated an Equol-Producing Bacterium from the Human Intestine and proposed as the new genus and species, Adlercreutzia equolifaciens

It is becoming clearer that isoflavones show their strongest estrogen-like activity when they are metabolized to equol in human intestine.
According to one of our studies, an intervention test over one year of 'Walking combined with Fujiflavone intake' (refer to Bone Health), confirms the whole body bone density decreasing rate of equol-producing participants, who consisted of a half of participants, stayed at 1/3 of that of the non-producing participants.
The transform of isoflavones to equol was understood to be as a result of the activity of intestinal bacteria, but the specific bacterial strain has not been identified.
Fujicco in a joint research with RIKEN BioResource Center and the Japan National Institute of Health and Nutrition succeeded in detecting the equol-producing bacterium, Adlercreutzia equolifaciens in the human intestine by PCR method.

Equol-Production from Glycitein was confirmed

As for equol-production from isoflavones, many studies have been presented regarding daidzein's metabolism, but for glycitein's metabolism fewer studies have been reported.
In joint research with the University of Shizuoka, Fujicco confirmed that about 60% of glycitein was transformed to equol by SD rat gut microflora.
Glycitein is a substance contained mostly in soy hypocotyl as glycosides.


8th International Symposium on the Role of Soy in Health Promotion and Chronic Disease Prevention and Treatment; 2008


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