Effect of different extraction solvents on the content of Thymoquinone content of Nigella sativa L. seeds using UV-Visible spectroscopy and evaluation of the free radical scavenging activity. Indian J Nat Prod Resour [Internet]. 2023 May 10 [cited 2026 May 26];14(1):22-7. Available from: https://or.niscpr.res.in/index.php/IJNPR/article/view/1135