“Validation and application of a standardized procedure for evaluating freshness of Citrus juices based on pectin methylesterase activity quantitation” (2012) Journal of Applied Botany and Food Quality, 85(1), p. 6. Available at: https://test.ojs.openagrar.de/index.php/JABFQ/article/view/1993 (Accessed: 17 May 2024).