High Polyphenol Hub

Farming

A row of olive trees running across an open field

Farming

Olive Oil Terroir and Polyphenols: What Can Place Really Explain?

A research-led look at climate, site and phenolic composition, with clear limits on claims about volcanic soils and individual groves.

A heap of green and black olives, showing the range of colour between varieties

Farming

Do Olive Varieties Determine Polyphenol Content?

Why cultivar matters for phenolic composition, but a variety name cannot predict a bottle's exact laboratory result.

A group of pickers hand-harvesting olives from a tree

Farming

Early-Harvest Olive Oil: Why Picking Time Changes Polyphenols and Flavour

What early harvest can change, why the earliest fruit does not guarantee the highest result, and how to judge the...