He also finished his master's degree in Food Technology in 2004 from Patras University-University of Ioannina-Ulster University.

In 2009, Galanakis, along with Eva Tornberg, founded Phenoliv AB which developed a patented process of extracting polyphenol antioxidants from waste water used in olive oil while purifying the same waste water in the same extraction process.

[6] In the same year, his first research publication—which highlighted the innovation for the use of dietary fiber suspensions from olive mill wastewater as potential fat replacements in meat products—attracted public interest.

"[8][9] The same research aims to high added-value compounds from wasted by-products in different stages of food production, re-utilize them in the food chain, and make bigger impact in achieving the Sustainable Development Goals (SDGs)—such as SDGs 2, 3, 6, 12, 13 and 15.

[1][22][23] From 2019 until 2023, he has also been consistently named and included in the list of the "World's Top 2% Scientists" by Stanford University.