H.Q. Tan, Y.M. Mohd Jusoh, D.N. Abang Zaidel, M. Jusoh, H. Ya’akob, D.J. Dailin, Effect of Ultrasonication Process on Microbial Content and Antioxidant Activities of Black Mulberry-Pineapple-Mango Functional Drink, Chemical Engineering Transactions. 83 (2021) 427-432. doi:10.3303/CET2183072.