Ratananikom, Khakhanang, NasinpormNipa, and PongjongmitTanitpan. 2021. “Carotenoid Assessments and Antioxidant Activities from Flower Petals ”. HAYATI Journal of Biosciences 29 (1), 54-61. https://doi.org/10.4308/hjb.29.1.54-61.