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Related Experiment Videos

New microencapsulation system for ascorbic acid using pea protein concentrate as coat protector.

Anna Paola T R Pierucci1, Leonardo R Andrade, Edilene B Baptista

  • 1Departamento de Nutrição Básica e Experimental, Instituto de Nutrição, Universidade Federal do Rio de Janeiro/Programa de Pós-Graduação em Ciências de Alimentos, Instituto de Química, Rio de Janeiro, Brazil. pierucci@nbe.ufrj.br

Journal of Microencapsulation
|November 23, 2006
PubMed
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Pea protein successfully microencapsulates ascorbic acid (AA) using spray-drying, preserving its biological activity. This novel carrier offers a viable alternative for AA stabilization, showing high retention and controlled release.

Area of Science:

  • Food Science and Technology
  • Materials Science
  • Biochemistry

Background:

  • Ascorbic acid (AA) requires stabilization to maintain its biological activity.
  • Pea protein (PPC) has not been previously explored as a microencapsulation carrier for AA.
  • Microencapsulation is crucial for protecting sensitive compounds like AA.

Purpose of the Study:

  • To develop microparticles of ascorbic acid (AA) using pea protein (PPC) as a wall material via spray-drying.
  • To evaluate the efficacy of PPC for AA microencapsulation compared to carboxymethylcellulose (CMC) and maltodextrin (M) blends.
  • To characterize the physicochemical properties and release kinetics of the produced microparticles.

Main Methods:

  • Spray-drying technique was employed to produce microparticles.

Related Experiment Videos

  • High-performance liquid chromatography (HPLC) assessed AA retention.
  • Scanning electron microscopy (SEM) analyzed morphology, and light scattering determined particle size distribution.
  • Release kinetics were studied and correlated with kinetic models.

    • Main Results:

    • Microencapsulation yields were compatible with spray-drying technology, with AA retention exceeding 84% for all tested materials.
    • PPC microparticles exhibited irregular, rough surfaces, while CMC yielded smooth surfaces, and M blends showed increased agglomeration.
    • All microparticles had mean diameters below 8 micrometers, and release rates were slower than free AA, fitting the Higuchi model.

    Conclusions:

    • Pea protein (PPC) is a suitable and effective wall material for the spray-drying microencapsulation of ascorbic acid (AA).
    • PPC microparticles demonstrate good retention of AA and controlled release characteristics.
    • The findings support the potential of using PPC for stabilizing and delivering ascorbic acid in various applications.