Development of Chitosan/Mannitol Microparticles as Delivery System for the Oral Administration of a Spirulina Bioactive Peptide Extract

Rita P Aquino, Giulia Auriemma, Giulio M Conte, Tiziana Esposito, Eduardo Sommella, Pietro Campiglia, Francesca Sansone

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Spirulina platensis contains several compounds showing nutritional and therapeutic benefits. Recently, a series of peptides able to reduce the blood pressure level and to enhance the endothelial vasorelaxation was isolated from the hydrolyzed highly water-soluble Spirulina extract (HSE). However, HSE shows critical organoleptic characteristics also having poor intestinal permeability, limiting absorption when orally delivered. This research aims to overcome the critical issues through the encapsulation of HSE in Chitosan/Mannitol-(CM)-based microparticles by spray drying. The produced powders (CM-HSE) showed good process yield (≈70%) and encapsulation efficiency (≈100%) also having good derived flow properties as well as stability up to six months storage. The microparticles constituting the spray-dried powder resulted in an amorphous micrometric state (d50 ≈ 14 µm) able to retain dark colour and unpleasant smell of raw HSE. Moreover, the in vitro permeation study by Franz cell indicated that the engineered microparticles are able to enhance the permeation of HSE through an intestinal biomimetic barrier (551.13 μg/cm2 CM-HSE vs. 315.46 μg/cm2 HSE at 270 min).

Original languageEnglish
Article number2086
Number of pages19
JournalMolecules
Volume25
Issue number9
DOIs
Publication statusPublished - May 2020

Keywords

  • Administration, Oral
  • Algorithms
  • Chitosan/chemistry
  • Drug Carriers/chemistry
  • Drug Compounding
  • Drug Delivery Systems
  • Mannitol/chemistry
  • Models, Theoretical
  • Particle Size
  • Peptides/chemistry
  • Permeability
  • Spirulina/chemistry

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