Process for Obtaining High-Activity Polyphenol Extracts from Grape Marc

Process for Obtaining High-Activity Polyphenol Extracts from Grape Marc

Inventor | Applied Extraction & Functional Ingredients Innovation

Patent: MD 825 Z / MD 1136 Z (Filed 2015, Granted 2017)
Exhibited at: The 22nd International Exhibition of Inventions (INVENTICA), Iași, Romania, 2018
Domain: Food, nutraceutical and pharmaceutical ingredients

I am a co-inventor of a patented industrial process for the extraction and stabilisation of high-activity polyphenols from grape marc, an important agro-industrial by-product of the wine industry.

The invention introduces an innovative pre-treatment of wet grape marc using alternating electric current, followed by controlled ethanol–water extraction and colour stabilisation with calcium chloride. The process yields a concentrated polyphenol paste with high antioxidant activity, suitable for application in functional foods, nutraceuticals and pharmaceutical formulations.

This technology combines sustainable raw material valorisation with enhanced extraction efficiency and product stability, offering a scalable solution for the production of natural antioxidant ingredients.

Key contributions and impact:

• Development of an electro-pre-treatment step to improve polyphenol recovery

• Optimisation of extraction and concentration conditions for high-activity antioxidant fractions

• Application to food, nutraceutical and pharmaceutical ingredient platforms

• Recognition at an international invention exhibition (INVENTICA 2018)

Inventors: Rodica Sturza, Aliona Ghendov-Moșanu, Elena Cristea, Antoanela Patraș, Violina Popovici, Ildiko Lung, Ocsana-Ileana Opriș, Manuela Cristina Stan, Maria-Loredana Soran

• Category Patents & Innovation
• Client: Public
• Date: 2017
• Website: https://repository.utm.md/handle/5014/25219