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Bioassay Guided Isolation of Anti-Inflammatory Compounds from Bauhinia variegata L.: A Key Ingredient in Herbo-Mineral Formulation, Gandmala Kandan Ras

Author(s): K. N. Killari, Nguyen Huy Thuan, D S N B K Prasanth, S. P. Panda, P. K. Pasala, Alekhya Ketha, V. B. Tatipamula* and K. Prasad
Department of Pharmacolgy, Sri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534201, India, 1Center for Molecular Biology, College of Medicine and Pharmacy, Duy Tan University, Danang 550000, Vietnam, 2Pharmacognosy Research Division, K L College of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra Pradesh 522302, 3Pharmacology Research Division, Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh 281406, 4Department of Pharmacology, Santhiram College of Pharmacy, Nandyal, Andhra Pradesh 518112, 5Department of Pharmaceutical Chemistry, Bharat Institute of Technology-Pharmacy, Mangalpally, Ibrahimpatnam, Telangana 501510, India

Correspondence Address:
V. B. Tatipamula, Center for Molecular Biology, College of Medicine and Pharmacy, Duy Tan University, Danang 550000, Vietnam, E-mail:

Medicinal herb Bauhinia variegata L. is the main ingredient in “Gandmala Kandan Ras” herbomineral medicine used in Ayurveda for the treatment of swelling, inflammation and tumors. This study aimed to isolate the anti-inflammatory compounds from the methanolic extract of aerial parts of Bauhinia variegata. Through bioassay-guided isolation, three known flavonoids, namely kaempferol, ombuin and quercetin were identified from methanolic extract of aerial parts of Bauhinia variega. The primary screening by protein denaturation method revealed a significant percentage of inhibition of protein denaturation of compounds kaempferol and quercetin. The anti-inflammatory assays against COX-1/2 enzymes showed significant anti-inflammatory activity of these two compounds, compared to the standard drug, indomethacin. Of which, quercetin as a potent non-selective inhibitor of COX1 and COX2 with minimal inhibitory concentration values of 172.05±4.29 and 220.62±9.13 nM, respectively; while kaempferol showed selective COX2 inhibition with the IC50 of 154.86±5.60 nM. The results provided evidence that supports the Ayurvedic usage of Gandmala Kandan Ras formulation in the treatment of inflammation, which was attributed to the natural active kaempferol and quercetin. The results indicated that plant Bauhinia variegata could be considered as an excellent natural source of remedial medicine for inflammation.

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