Determination and validation of spectrophotometric analytical method for quantification of total flavonoids in the leaves of Azadirachta indica A. Juss. (Meliacease) and optimization of the ultrasound-assisted extraction conditions. Research, Society and Development, [S. l.], v. 11, n. 3, p. e9211326135, 2022. DOI: 10.33448/rsd-v11i3.26135. Disponível em: https://rsdjournal.org/rsd/article/view/26135. Acesso em: 6 dec. 2025.