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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Development of W/O emulsion for encapsulation of “Pitanga” (Eugenia uniflora L.) leaf hydroethanolic extract: droplet size, physical stability and rheology

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Author(s):
Larissa TESSARO [1] ; Milena MARTELLI-TOSI [2] ; Paulo José do Amaral SOBRAL
Total Authors: 3
Affiliation:
[1] Universidade de São Paulo. Faculdade de Zootecnia e Engenharia de Alimentos. Departamento de Engenharia de Alimentos - Brasil
[2] Universidade de São Paulo. Faculdade de Zootecnia e Engenharia de Alimentos. Departamento de Engenharia de Alimentos - Brasil
Total Affiliations: 3
Document type: Journal article
Source: FOOD SCIENCE AND TECHNOLOGY; v. 42, 2021-06-11.
Abstract

Abstract The low chemical stability under environmental conditions of “Pitanga” leaf hydroethanolic extract (PLHE) can limit its application in industrial scale. It is known that this extract has high antioxidant and antimicrobial activities and that it must be stored under special conditions or encapsulated into W/O emulsions. The objective of this research was to encapsulate PLHE in a W/O emulsion, analyzing the effect of the concentration of the emulsifier and phase ratios on its droplet size, physical stability and viscosity. In general, the droplet size and stability of the W/O emulsions were affected by the concentrations of emulsifiers and phase ratios. The emulsion with a 20/80 W/O ratio and 3 g PGPR/100 g oil was chosen as the most stable formulation because they presented well distributed droplet sizes (unimodal distribution), the lowest D3,2 (0.25 ± 0.02 μm), the highest physical stability at 60 °C and presented Newtonian behavior. In conclusion, the W/O emulsion is able to encapsulate PHLE and can be applied to thermal processed foods. (AU)

FAPESP's process: 13/07914-8 - FoRC - Food Research Center
Grantee:Bernadette Dora Gombossy de Melo Franco
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 16/18788-1 - Raman microspectroscopy and chemometrics for the characterization of polymer-based microcarrier systems of active/photoactive compounds
Grantee:Milena Martelli Tosi
Support Opportunities: Regular Research Grants