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Decorative magnolia plants: A comparison of the content of their biologically active components showing antimicrobial effects
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SYSNO ASEP 0531689 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Decorative magnolia plants: A comparison of the content of their biologically active components showing antimicrobial effects Author(s) Lovecká, P. (CZ)
Svobodová, A. (CZ)
Macůrková, A. (CZ)
Vrchotová, B. (CZ)
Demnerová, K. (CZ)
Wimmer, Zdeněk (UEB-Q) RID, ORCIDNumber of authors 6 Article number 879 Source Title Plants. - : MDPI
Roč. 9, č. 7 (2020)Number of pages 9 s. Language eng - English Country CH - Switzerland Keywords Antimicrobial activity ; Honokiol ; Magnolia genus ; Magnolol ; Medium-polar extract ; Neolignan ; Obovatol ; Staphylococcus aureus Subject RIV EF - Botanics OECD category Chemical engineering (plants, products) R&D Projects FV30300 GA MPO - Ministry of Industry and Trade (MPO) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000558029500001 EID SCOPUS 85087820292 DOI 10.3390/plants9070879 Annotation Magnolia plants are used both as food supplements and as cosmetic and medicinal products. The objectives of this work consisted of preparing extracts from leaves and flowers of eight Magnolia plants, and of determining concentrations of magnolol (1 to 100 mg·g−1), honokiol (0.11 to 250 mg·g−1), and obovatol (0.09 to 650 mg·g−1), typical neolignans for the genus Magnolia, in extracts made by using a methanol/water (80/20) mixture. The tested Magnolia plants, over sixty years old, were obtained from Průhonický Park (Prague area, Czech Republic): M. tripetala MTR 1531, M. obovata MOB 1511, and six hybrid plants Magnolia × pruhoniciana, results of a crossbreeding of M. tripetala MTR 1531 with M. obovata MOB 1511. The identification of neolignans was performed by HRMS after a reversed-phase high-performance liquid chromatography (RP-HPLC) fractionation of an extract from M. tripetala MTR 1531. The highest concentrations of neolignans were found in the flowers, most often in their reproductive parts, and obovatol was the most abundant in every tested plant. The highest concentrations of neolignans were detected in parent plants, and lower concentrations in hybrid magnolias. Flower extracts from the parent plants M. tripetala MTR 1531 and M. obovata MOB 1511, flower extracts from the hybrid plants Magnolia × pruhoniciana MPR 0271, MPR 0151, and MPR 1531, and leaf extract from the hybrid plant Magnolia × pruhoniciana MPR 0271 inhibited growth of Staphylococcus aureus. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2021 Electronic address http://doi.org/10.3390/plants9070879
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