Le Thi Hong Thuy, et al. “OPTIMISATION OF BROMELAIN PURIFICATION FROM PINEAPPLE PEEL (Ananas Comosus L.) USING RESPONSE SURFACE METHODOLOGY”. HUIT Journal of Science, vol. 26, no. 1E, May 2026, p. 11, https://doi.org/10.62985/j.huit_ojs.vol26.no1E.331.