molecules Article Bioactive Phenolic Compounds from Primula veris L.: Influence of the Extraction Conditions and Purification Maria Tarapatskyy 1,* , Aleksandra Gumienna 1, Patrycja Sowa 1 , Ireneusz Kapusta 2 and Czesław Puchalski 1 1 Department of Bioenergetics, Food Analysis and Microbiology, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszów, 35-601 Rzeszów, Poland;
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[email protected]; Tel.: +48-17-7854834 Abstract: Our experiments may help to answer the question of whether cowslip (Primula veris L.) is a rich source of bioactive substances that can be obtained by efficient extraction with potential use as a food additive. A hypothesis assumed that the type of solvent used for plant extraction and the individual morphological parts of Primula veris L. used for the preparation of herbal extracts will have key impacts on the efficiency of the extraction of bioactive compounds, and thus, the health- promoting quality of plant concentrates produced. Most analysis of such polyphenolic compound contents in extracts from Primula veris L. has been performed by using chromatography methods such as ultra-performance reverse-phase liquid chromatography (UPLC−PDA−MS/MS). Experiments ◦ demonstrated that the most effective extraction agent for fresh study material was water at 100 C, whereas for dried material it was 70% ethanol. The richest sources of polyphenolic compounds Citation: Tarapatskyy, M.; were found in cowslip primrose flowers and leaves.