Encapsulation and stability of a phenolic-rich extract from mango peel within water-in-oil-in-water emulsions
Velderrain Rodríguez, Gustavo R.
González-Aguilar, Gustavo A.
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Mango peel is an excellent source of compounds with nutritional and functional properties, especially phenolic compounds (PC). However, it is usually discarded due to its unpleasant taste and its difficulty to be added to food products. As a solution, we evaluated the feasibility of encapsulating a phenolic-rich extract from mango peel (MPPE) within water-in-oil-in-water (W1/O/W2) emulsions, using different surfactants (Tween 20, Tween 80 and lecithin). Time and amplitude conditions of ultrasound treatment were evaluated to form the MPPE loaded water-in-oil (W/O) emulsions, using polyglycerol polyricinoleate (PGPR) as a surfactant. Regarding of W1/O/W2 emulsions, the highest encapsulation efficiency (EE) was observed in those with Tween 20 and lecithin (98.65 ± 1.14% and 96.11 ± 1.37%, respectively). However, emulsions with Tween 80 had the best physical and encapsulation stability (ES) during storage. These results demonstrate that PC can be successfully encapsulated within efficient and stable emulsion-based systems by selecting the appropriate surfactants.
Is part ofJournal Of Functional Foods, 2019, vol. 56, p. 65-73
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