Chitosan-alginate beads as encapsulating agents for Yarrowia lipolytica lipase: Morphological, physico-chemical and kinetic characteristics.

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ID: 11819
2019
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Ranked #135 of 200 articles by views in International journal of biological macromolecules

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Abstract
Extracellular lipase from Yarrowia lipolytica was immobilized by ionotropic gelation with alginate and chitosan as encapsulating agents. Photomicrographs revealed a collapsed and heterogeneous surface of these microcapsules due to freeze-drying process. The optimum reaction temperature for the microencapsulated lipase (40 °C) was higher than for free lipase (35 °C) as well as the optimum pH (8.0 and 7.5, respectively). The study of the reaction kinetics showed that a higher maximum reaction rate (V) (221.1 U/mg) for the free lipase in comparison to the immobilized form (175.3 U/mg). A protective effect of the microcapsule was detected in the storage of the enzyme at room temperature, as after 75 days 35% of activity was maintained for the microcapsules, while no activity remained after 15 days with the free enzyme. Lower values for inactivation constant (k) and increase in half-life for immobilized lipase showed that lipase microencapsulation favored the thermostability of this enzyme.
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pereira2019chitosanalginateinternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Pereira, Adejanildo da S;Diniz, Marianne M;De Jong, Gabriel;Gama Filho, Hamilton S;Dos Anjos, Marcelino J;Finotelli, Priscilla V;Fontes-Sant'Ana, Gizele C;Amaral, Priscilla F F;
Journal International journal of biological macromolecules
Year 2019
DOI
S0141-8130(19)34097-8
URL
Keywords Keywords not found

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