Rajchasom, S., Sombatnan, P., Tanongkankit, Y. and Narkprasom, N. (2026) “Optimization of ultrasonic-assisted extraction of anthocyanins, flavonoids and their antioxidant activity from Doi Saket purple rice (Oryza sativa L.)”, Agriculture and Natural Resources. Bangkok, Thailand, 59(5), p. 590507. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/271114 (accessed: 26 August 2026).