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Comparative <em>in vitro</em> analysis of the biological potential of <em>Usnea florida </em>(L.) Weber ex F.H. Wigg., <em>Usnea</em><em> intermedia </em>(A. Massal.) Jatta, and <em>Usnea lapponica</em> vain and quantification of usnic acid

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Title Statement Comparative <em>in vitro</em> analysis of the biological potential of <em>Usnea florida </em>(L.) Weber ex F.H. Wigg., <em>Usnea</em><em> intermedia </em>(A. Massal.) Jatta, and <em>Usnea lapponica</em> vain and quantification of usnic acid
 
Added Entry - Uncontrolled Name Kocakaya, Mustafa
İlik, Gökçe Nur
İlgün, Selen
Kocakaya, Zekiye
Karatoprak, Gökçe Şeker
Ceylan, Ahmet
 
Uncontrolled Index Term Antimicrobial, Antioxidant, Cytotoxicity, DNA cleavage, Usnea
 
Summary, etc. The present study focused on the antioxidant, cytotoxic, antimicrobial, and DNA-protective effects of <em>Usnea lapponica, Usnea intermedia</em>,<em> and Usnea florida</em>, which are distributed in Turkey. The methanol extracts of these three lichen species were subjected to high-performance liquid chromatography (HPLC) analysis to quantify the amount of usnic acid and the highest amount was found in <em>U. lapponica</em> (3345.9±92.18 mg/g<sub>extract</sub>). Furthermore, the total phenolic and flavonoid contents were analyzed. Antioxidant capacity was evaluated by different chemical assays, together with antimicrobial, cytotoxic, and DNA-protective properties.The results of the antioxidant assays showed that <em>U. lapponica</em> exhibited the highest DPPH radical scavenging activity, whereas the extract that scavenged ABTS radicals more potently was identified as <em>U. intermedia</em>. The disc diffusion method was used to investigate the antimicrobial activity, and the strongest effect was observed in <em>U. intermedia</em> methanol extract with a zone value of 13 mm on <em>Micrococcus luteus. </em>In cytotoxicity experiments, <em>U. florida</em> extract (250 μg/mL; 36.03% viability) exhibited a high antiproliferative effect on A549 cells and <em>U. intermedia</em> (62.5 µg/mL; 23.65% viability) on MDA-MB-231 cells. DNA-protective effects were investigated using pBR322 plasmid DNA, and all the studied species were found to have DNA-protective effects. These results suggest that <em>Usnea</em> species may be potential candidates for the development of new phytopharmaceuticals and functional ingredients.
 
Publication, Distribution, Etc. Indian Journal of Traditional Knowledge (IJTK)
2024-06-28 11:25:10
 
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http://op.niscair.res.in/index.php/IJTK/article/view/72559
 
Data Source Entry Indian Journal of Traditional Knowledge (IJTK); ##issue.vol## 23, ##issue.no## 6 (2024): Indian Journal of Traditional Knowledge
 
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