Resumo

GALLEGO-OCAMPO, Heidy Lorena; ORTEGA-VILLALBA, Karen Johana; VELEZ-PASOS, Carlos Antonio  e  ROJAS-ALVARADO, Ronald Joanny. Influence of the pectin and cellulose on the performance of cross-flow microfiltration. Rev.fac.ing.univ. Antioquia [online]. 2023, n.109, pp.108-119.  Epub 08-Nov-2023. ISSN 0120-6230.  https://doi.org/10.17533/udea.redin.20221102.

The cross-flow microfiltration (CFM) of fruit juices allows obtaining products of high quality by conserving their organoleptic characteristics and microbiological stability during storage. The effect of the main macro-compounds and the transmembrane pressure (TMP) on the process performance with model fluids was evaluated. The model fluids concentration varied between 0.25 and 0.75% for pectin and 0.04 and 0.08% for cellulose. To study the influence of transmembrane pressure (TMP) and concentration on the hydrodynamic properties of the fouling layer (K, C g ), diffusivity (D) and the boundary layer thickness (δ b ) the Box-Behnken design with three replicas in the center was used. It was found that the CFM process is efficient and commercially feasible when working at a constant TMP of 1.93 bar and at concentrations of pectin and cellulose of 0.25% and 0.0513%, respectively.

Palavras-chave : Fluid mechanics; model; fruit; diffusion; microbiology.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )