Marina has a degree in Food Preparation Sciences. She is currently the Quality Manager at the “Oleificio Pietro Coricelli S.p.A.”.

Marina deals with quality certifications, contacts with customers and consumers. It also deals with the surveillance of the quality of products and processes, the control of incoming oils from a sensorial point of view. She was also Head of Quality Assurance at “Carapelli Firenze” and Quality Manager of “Agnesi Spa” for the production of pasta in the Danone group. Marina has been an ONAOO Professional Taster since 2001.

Marina was the winner in 2015 of “THE GREAT CHALLENGE – THE WORLDWIDE OLIVE OIL TASTERS’ CHALLENGE” at the Milan EXPO. She regularly attends refresher courses organized by ONAOO of which she has also become a member of the Council in 2019.

In 2019, Diana and her husband initiated the establishment of a modest olive grove in the Marche region of Italy.

As a result of the substantial increase in production, they made the decision to sell their business in the Netherlands. Currently, the company’s exclusive focus is on the production of extra virgin olive oil in Italy under the Di Lorenzetto brand, which is renowned for its superior quality.

To further refine the quality of their oil and gain a deeper understanding of the varieties, flavors, health properties, and defects of olive oil, Diana decided to embark on a training course. She began with a tasting course in Madrid, followed by a technical course and an advanced one at O.N.A.O.O., concluding her studies in november 2024 with the qualification of Professional Taster. In 2024, she also obtained her olive oil sommelier certification at the International Culinary Institute in New York.

Since 2019, Diana has been a member of the Olive Oil Institute panel from the Netherlands. She also regularly conducts workshops and masterclasses for schools, chefs, amateur cooks, and olive oil enthusiasts in the Netherlands and Italy.

Najeeb is a distinguished banking professional whose expertise extends far beyond the financial sector. While he has achieved significant success in his career, his true passion lies in the art and science of olive oil, a pursuit deeply rooted in his family’s heritage and the rich traditions of Palestine.

Motivated by this connection, he embarked on an educational journey at the ONAOO School, concluding in 2024 with the achievement of a professional taster qualification, marking him as the first from Palestine to achieve such recognition. Originating from the historic town of Birzeit, whose name translates to “olive oil well,” Najeeb grew up immersed in the legacy of olive cultivation.

His family co-owns an olive press in northern Palestine, where they blend generations of knowledge with modern, environmentally sustainable practices to produce exceptional olive oil. Najeeb’s journey reflects the deep, enduring relationship between people, the land, and one of its most revered symbols — the olive tree.

Giulio is Professional Taster of ONAOO since 1986 and he is also in the Panel of ONAOO.