KETMARO, P.; MUANGSIRI, W.; WERAWATGANONE, P. UV Spectroscopic Characterization and Stabilities of Natural Colorants from Roselle Calyx, Lac Resin and Gardenia Fruit. Journal of Health Research, [S. l.], v. 24, n. 1, p. 7–13, 2018. Disponível em: https://he01.tci-thaijo.org/index.php/jhealthres/article/view/156630. Acesso em: 1 oct. 2026.