Masato Tanaka, et al. “Preparation of Microcapsules Containing Grape Polyphenols and I-Tocopherol by Spray-Gelling Method”. Global Journal of Medical Research, vol. 14, no. C4, Mar. 2014, pp. 1-5, https://medicalresearchjournal.org/index.php/GJMR/article/view/100368.