Sari, Rani Permata, et al. “The Effect of Sorbitol Concentration on The Characterictics of Purple Yam Starch (Dioscorea Alata) Based Edible Film: Yam Starch Based Edible Film”. Jurnal Bio-Geo Material Dan Energi, vol. 2, no. 1, Mar. 2022, pp. 8-12, doi:10.22437/bigme.v2i1.31538.