Many studies have suggested
that moderate red wine consumption is beneficial for heart.
A laboratory study, just published in the January 2007 issue
of Cardiovascular Research, indicates that juice
made of Concorde grapes works similar to red
wine to promote healthy arterial function, reports medicalnewstoday.com.
Dr. Valérie Schini-Kerth and a team
of researchers of the Université Louis Pasteur de
Strasbourg found that Concord purple grapes stimulated the
production of nitric oxide in endothelial cells and produced
a vasorelaxation effect. It is known that nitric oxide is
important in the body's natural system for maintaining healthy,
flexible blood vessels and helps support healthy blood pressure.
The findings in this study are particularly
noteworthy because the beneficial effects of Concord grape
juice were observed in arteries of the heart.
Researchers further discovered that Concord
purple grape juice - available as Welch's Purple Grape Juice
in the UK - produced this relaxation effect by stimulating
the same chemical reactions in the arteries that are activated
by red wine, showing that it's the components of the
grape, rather than alcohol, that produces this beneficial
effect for the heart.
This study supports other preliminary research in which
Concord grape juice had a blood pressure-lowering effect
as it provides a possible mechanism for the effect.
"But not every grape juice has the
beneficial effect. It has to have a high level of polyphenols,"
Schini-Kerth cautioned. ‘The amount of polyphenols
in grape juice, as in red wine, depends on the type of grape
used and how it is processed.'
"We have information on more than
100 different kinds of wine and the amount of polyphenols.
What we know is that the most protective ones have the highest
levels of polyphenols. That is established," she said,
adding that, ‘little information is available on the levels
of polyphenols in grape juice'.
If you are looking for an alternative to
red wine, grape juice made from Concord grapes might provide
a delicious, family-friendly, heart-healthy alternative...just
Details at www.medicalnewstoday.com
The study does not indicate how much
grape juice should be drunk to give equivalent benefits-editor
To the best of our knowledge Concorde
grape is not produced in India . If some of our readers
would like to educate us on this, we shall be delighted
to publish the information-editor
P.s.- The study was partly funded by
the Welch Foods Inc. makers and promoters of Welch grape