Mepresentasikan Karya Ilmiah pada : 7th International Conference on Applied Science and Engineering (ICASE) HOTEL MYSTAYS Ochanomizu CC, Tokyo,10 November, 2018, dengan Judul : "Influence of Use Lactobacillus fermentum L23 and Streptococcus thermophilus with Dragon Fruit Extract (Hylocereus Polyrhisuz) to Quality of Microbiology, Chemistry and Organoleptic Value of Yoghurt" a.n Prof. Endang Purwati - Purwati, Endang