Dr. Maarit Karonen

Short Biography
• 2001 MSc (UTU, Environmental Chemistry)
• 2007 PhD (UTU, Chemistry; Plant proanthocyanidins. Characterization and quantification by degradation methods, HPLC-DAD/ESI-MS and NMR)
• 2012 Docent, adjunct professor (UTU, Natural Compound Chemistry)

My research

As a researcher, I like to search for something new. I like the possibility to develop myself and to realise something that has not yet been understood. I never really dreamed of being a researcher, but accidentally ended up to be one. I was asked to work in our lab during my master studies. I started as a research assistant in a project working on ”preclinical evaluation of the health effects of natural materials”. Soon I discovered that there was a passionate scientist inside me. Today my strong areas are the chemistry of tannins and polyphenols and the qualitative and quantitative analyses of tannins and polyphenols. The main tools are liquid chromatography and mass spectrometry.

My PhD work focussed mainly on proanthocyanidins and their analytics and characterization. I started my postdoctoral research by proanthocyanidins, but my postdoctoral researcher’s project “Promising ellagitannins: effects on ruminant health and greenhouse gas emissions” funded by the Academy of Finland brought new winds and tannins to my life. In addition to the chemical techniques familiar to myself, I could work with isothermal titration calorimetry in University of Reading in United Kingdom and study the effects of ellagitannins on in vitro gas and methane production in Wageningen University & Research Centre in the Netherlands.

In recent years, my research has increasingly focused on the diverse interactions of tannins with both macromolecules and anthelmintic compounds. As analytical techniques, we have employed methods such as isothermal titration calorimetry and NMR spectroscopy.

Currently, my research interests also include the role of tannins in forest ecosystems and their potential for sustainable utilization in the future. This aspect is being investigated within the MetaFor project, which aims to promote a sustainable bioeconomy by utilizing forest biomass in innovative ways, following the principles of the circular economy. The project focuses on insoluble metabolites in forest industry residues, which can stabilize organic carbon and immobilize nitrogen, thereby enhancing soil carbon sinks. Further information about my research activities and a comprehensive list of my publications can be found in UTU Research Portal.

My research

I have completed teachers' pedagogical studies (60 ECTS). I think that the learning is a lifelong process and I feel that by teaching I also learn by myself. My teaching includes courses and the supervision of BSc, MSc and PhD students in their lab work and theses. The working with wonderful students is one of the best parts in the academic work. At the moment, my courses are:  LC-MS and its Applications; Identification of Bioactives by UV, MS and MS/MS Spectra; Structure, Activity and Quantitation Methods; Scientific Communication of Chemistry and Book Exams of Natural Compound Chemistry.