quercetin
quercetin, also spelt quercitin, a yellow dyestuff with antioxidant properties belonging to the flavonol family, originally extracted from the bark…
Become a member or log in to continue reading
Go for gold with your wine knowledge.
The world just came together in Italy – and there’s never been a better time to explore its wines and beyond.
For a limited time, get 20% off all annual memberships by entering promo code GOLD2026 at checkout. Offer ends 12 March. Valid for new members only.
Member
$135
/year
Ideal for wine enthusiasts
- Access 290,150 wine reviews & 15,938 articles
- Access The Oxford Companion to Wine & The World Atlas of Wine
Inner Circle
$249
/year
Ideal for collectors
- Access 290,150 wine reviews & 15,938 articles
- Access The Oxford Companion to Wine & The World Atlas of Wine
- Early access to the latest wine reviews & articles, 48 hours in advance
Professional
$299
/year
For individual wine professionals
- Access 290,150 wine reviews & 15,938 articles
- Access The Oxford Companion to Wine & The World Atlas of Wine
- Early access to the latest wine reviews & articles, 48 hours in advance
- Commercial use of up to 25 wine reviews & scores for marketing
Business
$399
/year
For companies in the wine trade
- Access 290,150 wine reviews & 15,938 articles
- Access The Oxford Companion to Wine & The World Atlas of Wine
- Early access to the latest wine reviews & articles, 48 hours in advance
- Commercial use of up to 250 wine reviews & scores for marketing