Formulation and Optimization of Lipid Nanoparticles with Chitosan for Quercetin Delivery

  • Diego Gallego
    Área de Farmacia y Tecnología Farmacéutica. Facultad de Farmacia ganda[at]usal.es
  • Clara Isabel Colino
    Área de Farmacia y Tecnología Farmacéutica. Facultad de Farmacia

Abstract

Quercetin presents numerous activities, such as antioxidant, anticancer,  cardioprotective, etc. that make it suitable for its therapeutic use. However, quercetin has a limited biodisponibility due to its low water solubility which limits its pharmaceutical application. In this work, the encapsulation of quercetin in chitosan-coated liposomes was proposed. The influence of the molecular weight of chitosan (ultralow, low and medium) and phosphatidylcholine:chitosan ratio (16:1, 8:1, 4:1) on the size, polydispersity index, encapsulation efficiency and zeta potential of the prepared nanoparticles were evaluated, obtaining values of 339.02-670.62 nm, 0,26 y 0,32, 43.5-59.3 % y 55.2-63.3 mV respectively. Subsequently, low molecular weight chitosan and phosphatidylcholine:chitosan 16:1 ratio were selected for a freeze-drying study of the nanoparticles, with freezing temperatures of -20 ºC and -80 ºC and lactose, trehalose and sucrose as cryoprotectants. The encapsulation efficiency and residual moisture were studied. Freezing conditions at -80 ºC and trehalose as cryoprotectant prevented the loss of encapsulated quercetin to a greater extent.
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Gallego, D., & Colino, C. I. (2023). Formulation and Optimization of Lipid Nanoparticles with Chitosan for Quercetin Delivery. FarmaJournal, 8(2), 17–25. https://doi.org/10.14201/fj2023821725

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