| Evaluation of physicochemical characteristics, in vitro release and antioxidant properties of β-carotene and β-cyclodextrin inclusion complexes with rice as food matrix |
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The goal of this research was to prepare inclusion complexes with β-carotene and β-cyclodextrin as viable
fortificants via physical blending (PB), kneading (K), and co-precipitation (CP). The physicochemical
characteristics (inclusion efficiency, yield, antioxidant activities, FTIR spectra, scanning electron
micrographs) besides in vitro release and antioxidant properties of the complexes were evaluated with rice
as food matrix. CP and PB solids exhibited highest inclusion efficiency (83%) and yield (100%), respectively.
Fourier Transform Infrared Spectroscopy (FTIR) spectra revealed changes in intensity, position, and number
of peaks in β-cyclodextrin and β-carotene, confirming guest-host interactions in inclusion complexation.
Scanning electron micrographs showed heterogeneous particles of β-carotene and β-cyclodextrin in PB but
homogeneous solids in K and CP complexes. Simulated in vitro digestion showed burst release of β-
carotene in PB complexes. Food matrix appeared to synergistically affect release and antioxidant
properties. K and CP complexes exhibited sustained radical scavenging activity and ferric reducing power,
respectively, and may be recommended for further applications.
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