Yenrina, R. et al. 2016. Effect of Natural Colorants on Color and Antioxidant Activity of "Kolang Kaling" (Sugar Palm Fruit) Jam. Pakistan Journal of Nutrition. 15, 12 (Nov. 2016), 1061–1066. DOI:https://doi.org/10.3923/pjn.2016.1061.1066.