Quach, T., Tong, T., Nguyen, D. and Nguyen, H. 2013. Survey of some probiotic activity of traditional passionfruit-Kefir and Lactobacillus casei VTCC186 – supplemented passion fruit – Kefir. Science and Technology Development Journal. 16, 3 (Sep. 2013), 40-47. DOI:https://doi.org/https://doi.org/10.32508/stdj.v16i3.1637.