Roots and Leaf Extracts of L. and Their Biological Activities.

Plants (Basel)

Department of Fruit, Vegetable and Plant Nutraceuticals Technology, Wrocław University of Environmental and Life Sciences, 37 Chełmońskiego Street, 51-630 Wrocław, Poland.

Published: January 2020

The aim of the study was to identify and evaluate the content of iridoids and phenolic compounds in the leaves and roots of L. They were identified and quantified by UPLC-PDA-MS/MS. Five iridoid compounds (loganic acid, loganin, sweroside, cantleyoside, and sylvestroside III) were identified in L. leaves and roots. Seven phenolic acids and three flavones were identified in the leaves, and seven phenolic acids were detected in the roots. The leaves contained more iridoids and phenolic compounds than the roots. We also evaluated the antimicrobial (anti-bacterial and anti-yeast), antioxidant (ORAC methods), and antiacetylcholinesterase (AChE) activities of L. leaves and roots. Leaf extract demonstrated the strongest antioxidant activity, but roots showed stronger antiacetylcholinesterase activity than leaves. The study also confirmed antibacterial activity of root-derived compounds against DSM 799 and ATCC 10536.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7020454PMC
http://dx.doi.org/10.3390/plants9010078DOI Listing

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