Research
Analytical Strategies
Understanding how food components function at the molecular level requires precise analytical tools. In my work, I’ve developed and applied high-resolution methods using chromatography, spectrophotometry, and mass spectrometry to study bioactive compounds across food and biological systems. I focused particularly on polyphenols, pigments, and antioxidants—both in food products and those recovered from food processing by-products—investigating how their composition, stability, and transformation influence their functional properties.These methods have helped reveal structure–function relationships that drive antioxidant activity, pigment performance, and ingredient behavior in real food applications.
References
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Erşan S, Chen Y, Park JO. 2025. Comprehensive profiling of folates across polyglutamylation and one-carbon states. Metabolomics 21, 71. Link -
Erşan S. 2024. Comprehensive analysis of pistachio hull phenolics by HPLC-DAD-MS/MS. In: Gouda M, Li X, He Y (Eds.), Plant Chemical Compositions and Bioactivities, Springer Protocols, Humana New York, pp. 13–38. Link -
Ozturk A, Steingass CB, Schweiggert R, Carle R, Yemis O, Erşan S. 2023. Ultrasound-assisted extraction and analysis of phenolic compounds from black chokeberries. J. Appl. Bot. Food Qual. 96, 21–29. Link -
Erşan S†, Berning JC†, Esquivel P, Jimenez VM, Carle R, May B, Schweiggert RM, Steingass CB. 2020. Phytochemical and mineral composition of fruit and seeds of wild-growing Bactris guineensis (L.) H.E. Moore palms from Costa Rica. J. Food Compos. Anal. 94, 103611. (†Equal contribution) Link -
Wen X, Erşan S, Li M, Wang K, Steingass CB, Schweiggert RM, Ni Y, Carle R. 2019. Physicochemical characteristics and phytochemical profiles of yellow and red Physalis fruits cultivated in China. Food Res Int 120, 389–398. Link -
Erşan S, Guclu-Ustundag Ö, Carle R, Schweiggert R. 2017. Determination of pistachio hull phenolics by HPLC-DAD-ESI/MSn. J. Food Compos. Anal. 62, 103–114. Link -
Erşan S, Guclu-Ustundag Ö, Carle R, Schweiggert R. 2016. Identification of phenolic compounds in pistachio hulls by HPLC-DAD-ESI-(HR)-MSn. J. Agric. Food Chem. 64, 5334–5344. Link