Đông, N. K., Mạnh, L. H. and Huyền Trân, L. T. (2020) “Extraction of pectin from watermelon peels for pineapple and aloe vera jam fabrication”, Hue University Journal of Science: Natural Science, 129(1C), pp. 69-75. doi: 10.26459/hueuni-jns.v129i1C.5538.