Zúñiga-Hansen, María Elvira, Eduardo Pérez-Torres, Eduardo Caballero-Valdés, and José Fernández-Parodi. 2012. “Effect of a Commercial Pectinmethylesterase on Tomato Paste Consistency”. Electronic Journal of Biotechnology 15 (3). Valparaíso, Chile. https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v15n3-5.