Yenrina, R.; Sayuti, K.; Anggraini, T. Effect of Natural Colorants on Color and Antioxidant Activity of "Kolang Kaling" (Sugar Palm Fruit) Jam. Pak. J. Nutr. 2016, 15 (12), 1061–1066. https://doi.org/10.3923/pjn.2016.1061.1066.