Rungtip Jutamongkon, and Sanguansri Charoenrein. “Effect of Temperature on the Stability of Fruit Bromelain from Smooth Cayenne Pineapple”. Agriculture and Natural Resources, vol. 44, no. 5, Oct. 2010, pp. 943-8, https://li01.tci-thaijo.org/index.php/anres/article/view/245008.