Yusuf, Dandy, et al. “In Vitro Antioxidant and α-Glucosidase Inhibitory Activities of Lactobacillus Spp. Isolated from Indonesian Kefir Grains ”. Applied Food Biotechnology, vol. 8, no. 1, Dec. 2020, pp. 39-46, doi:10.22037/afb.v8i1.30367.