Cow milk enriched with nanoencapsulated phenolic extract of jaboticaba (Plinia peruviana)

  • Gaetano Di Maio
  • Paola Pittia
  • Letícia Mazzarino
  • Marcelo Maraschin
  • Shirley KuhnenEmail author
Original Article


This study evaluated the total phenolic content (TPC) and the antioxidant activity (AA) of cow’s milk enriched with phenolic compounds extracted from jaboticaba peel, either by adding jaboticaba crude extract or a jaboticaba-loaded nanoemulsion. Three nanoemulsions with 5, 10 and 15% of jaboticaba extract were prepared. Average particle diameter (166.7–181.7 nm), polydispersity index (0.138–0.156) and zeta potential (ranging from − 35.30 to − 38.60 mV) were measured for the three different colloidal systems. The nanoemulsion with 15% of jaboticaba extract (J15-NE) was chosen for milk enrichment. J15-NE showed an encapsulation efficiency of 85.6% and remained stable for 60 days at 8 °C. Transmission electron microscopy of J15-NE displayed nanoparticles with a well-defined spherical shape. Reference milk, milk enriched with jaboticaba extract and milk enriched with J15-NE were characterised by a TPC of 93, 171 and 161 µg/ml GAE (gallic acid equivalent), respectively, and an AA of 0.04, 0.17 and 0.14 µg/ml TEAC (trolox equivalent antioxidant capacity), respectively. Thus, this study showed that nanoemulsion with jaboticaba peel extract could be exploited as an ingredient to enrich the properties of milk.


Plinia peruviana Phenolic compounds Antioxidant activity Cow’s milk Nanoemulsion High-pressure homogenisation 



This study was funded by CNPq (National Council on Scientific and Technological Development; Brasília, Brazil) through Project No. 402539/2013-3, Edital 29/2013.


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Copyright information

© Association of Food Scientists & Technologists (India) 2019

Authors and Affiliations

  • Gaetano Di Maio
    • 1
  • Paola Pittia
    • 1
  • Letícia Mazzarino
    • 2
  • Marcelo Maraschin
    • 2
  • Shirley Kuhnen
    • 3
    Email author
  1. 1.Faculty of Bioscience and Technology for Food, Agriculture and EnvironmentUniversity of TeramoTeramoItaly
  2. 2.NanoBioMat LaboratoryFederal University of Santa CatarinaFlorianópolisBrazil
  3. 3.Laboratório de Bioquímica e Morfofisiologia Animal - LABIMAFederal University of Santa CatarinaFlorianópolisBrazil

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