Costus speciosus L. is a tuberous plant commonly available in wetlands and near water bodies throughout Odisha state and used as food and medicinal purposes. The tribal communities of the state used the rhizome to cure joint pain, skin infections and consume as nutraceutical. The above claims are supportive of the fact that the rhizome might have antioxidant potentials and might be rich with diverse secondary metabolites. Keeping this in view an attempt has been made to evaluate the bioactive compounds present in the plant parts and antioxidant potentials in order to validate the tribal claims. Results revealed that the plant parts are rich with phenolic compounds and have antioxidant potential.
The present study was undertaken to evaluate the antimicrobial, antioxidant, and anticancer activity of Dirinaria aegialita (Afzel. ex Ach.) B.J. Moore and Parmotrema praesorediosum (Nyl.) Hale, the two dominant macrolichens taxa from the Similipal Biosphere Reserve of Odisha. Both the lichens were evaluated for their efficacy against three bacterial species such as Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis, and three fungal species such as Aspergillus niger, Trichoderma harzianum, and Candida albicans. The D. aegialita and P. praesorediosum showed higher inhibitory effect against Bacillus subtilis and Staphylococcus aureus, respectively. D. aegialita also showed the higher inhibitory activity against MCF-7 and MDA MB-231 breast cancer cell line as compared to P. praesorediosum. Besides, D. aegialita was found to have better antioxidant activity than P. praesorediosum in scavenging assay. Thus, the results of the above study confirmed that D. aegialita species is having better potential in its antibacterial, antioxidant, and anticancer activity as compared to P. praesorediosum.
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