Process optimization of ultrasonic assisted extraction of betalains from red beet, Beta vulgaris L. waste stalks. Indian Journal of Experimental Biology (IJEB), [S. l.], v. 59, n. 12, p. 858–866, 2021. DOI: 10.56042/ijeb.v59i12.57831. Disponível em: https://or.niscpr.res.in/index.php/IJEB/article/view/3413. Acesso em: 13 may. 2026.