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Antimicrobial flavonoids from Tridax procumbens
1Laboratory of Plant Tissue Culture and Secondary Metabolites, Department of Botany, University of Rajasthan, Jaipur, India. jindal4@gmail.com
Natural Product Research
|November 4, 2011
Summary
Tridax procumbens callus cultures produced flavonoids with antimicrobial properties. The most active compounds, identified as apigenin, quercetin, and kaempferol, showed potential against bacteria and yeast.
Area of Science:
- Plant Biotechnology
- Pharmacognosy
- Microbiology
Background:
- Callus cultures offer a renewable source for plant-derived compounds.
- Tridax procumbens is a medicinal plant with known bioactive constituents.
- Flavonoids are a class of plant secondary metabolites with diverse biological activities.
Purpose of the Study:
- To establish a callus culture of Tridax procumbens.
- To extract and screen free and bound flavonoids for antimicrobial activity.
- To identify the specific flavonoids responsible for the observed activity.
Main Methods:
- Callus induction using Murashige and Skoog's medium with NAA and BAP.
- Extraction of free and bound flavonoids from calli of varying ages (2, 4, 6, 8 weeks).
- Antimicrobial screening against Staphylococcus aureus and Candida albicans, including MIC, MBC/MFC, and total activity determination.
- Identification of active flavonoids using Thin Layer Chromatography (TLC), preparative TLC, Melting Point (MP), and Infrared (IR) spectroscopy.
Main Results:
- Callus cultures of Tridax procumbens were successfully established.
- Free flavonoids from 4-week-old calli exhibited significant antimicrobial activity against Staphylococcus aureus and Candida albicans.
- Apigenin, quercetin, and kaempferol were identified as the primary active compounds in the most potent callus extracts.
Conclusions:
- Tridax procumbens callus culture is a viable source for antimicrobial flavonoids.
- The identified flavonoids (apigenin, quercetin, kaempferol) demonstrate potential for developing new antimicrobial agents.
- Further research into the therapeutic applications of these compounds is warranted.
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