Resumen
- Melon juice obtained from fruits discarded by exporters was first clarified by crossflow microfiltration and then concentrated by osmoticevaporation (OE). The resulting clarified melon juice was highly similar to the initial juice, except for insoluble solids and carotenoids, whichwere concentrated in the retentate. Average permeation flux was relatively high (about 80 L h1m2), with continuous extraction of retentateat a volumetric reduction ratio of 3. After concentration of the clarified melon juice to as much as 550 g kg1of total soluble solids using acontinuous feed-and-bleed procedure of OE, we found that almost the entire composition of the product was preserved. This integratedmembrane process permitted two valuable products to be obtained: a clarified concentrate of melon juice that had not undergone any thermaltreatment, and a glowing-orange retentate that was enriched in provitamin A.D 2004 Elsevier Ltd. All rights reserved