Nanocomplexes formation between polyphenols of apple peels and beta-lactoglobulin for their potential application in functional foods

Authors

  • Emilce Elina Llopart Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina. Consejo Nacional de Investigaciones Científcas y Técnicas (CONICET), Rosario, Santa Fe, Argentina http://orcid.org/0000-0002-2276-3004
  • Pablo Andrés Busti Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina http://orcid.org/0000-0002-7547-1232
  • Roxana Andrea Verdini Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina. Instituto de Química Rosario (IQUIR, UNR-CONICET), Rosario, Santa Fe, Argentina. http://orcid.org/0000-0002-2339-6904
  • Néstor Jorge Delorenzi Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina http://orcid.org/0000-0002-1128-952X

DOI:

https://doi.org/10.26461/15.02

Keywords:

polyphenols, apple peel, beta-lactoglobulin, nanocomplexes

Abstract

Polyphenols (PF) exert an important influence on human health, mainly due to their antioxidant capacity. Apples have PF mainly in their peel. Te major whey protein, beta-lactoglobulin (β-lg), can bind amphiphilic compounds, such as PF, protecting them from the action of external agents. In this work, nanocomplexes (NC) of PF extracted from red apple peel (Red Delicious), and β-lg were studied. By ultrafltration it was determined that 57% of the PF added bound to the protein. Fluorescence extinction of β-lg by PF addition performed at different temperatures confrmed the formation of a static complex. Te fluorescence extinction of β-lg with acrylamide did not vary signifcantly in the presence of PF, indicating that PF bound to a site different from the hydrophobic pocket of the protein. Particle size and ζ potential measurements of β-lg were not signifcantly modifed by the addition of PF. Tis fact pointed to a low number of PF bounded to the dimer of the protein. In conclusion, NC would allow PF vehiculization, their protection and use for enrichment functional foods.

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Published

2018-06-18

How to Cite

Llopart, E. E., Busti, P. A., Verdini, R. A., & Delorenzi, N. J. (2018). Nanocomplexes formation between polyphenols of apple peels and beta-lactoglobulin for their potential application in functional foods. INNOTEC, (15 ene-jun), 32–36. https://doi.org/10.26461/15.02

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