B. N. Tochi, Z. Wang, S.-Y. Xu, and W. Zhang, “The Influence of a Pectinase and Pectinase/hemicellulases Enzyme Preparations On percentage Pineapple Juice Recovery, Particulates and Sensory Attributes”, Pak. J. Nutr., vol. 8, no. 8, pp. 1184–1189, Jul. 2009, doi: 10.3923/pjn.2009.1184.1189.