Microencapsulation of biocompounds from avocado leaves oily extracts

Translated title of the contribution: Microencapsulation of biocompounds from avocado leaves oily extracts

C. P. Plazola-Jacinto, V. Pérez-Pérez, S. C. Pereyra-Castro, L. Alamilla-Beltrán, A. Ortiz-Moreno

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Microencapsulation of natural biocompounds is a growing field leading to its incorporation into food formulations. The use of vegetable oils as alternative solvents to extract biocompounds is considered a green process. Although avocado leaves are underexploited they are rich in naturally-occuring biocompounds. Therefore, we propose the extraction of biocompunds from avocado leaves using edible vegetable oils and preserve them by means of spray-drying microencapsulation. Spray drying allowed an encapsulation efficiency of the avocado leaves pigments of 50%, extracted with edible oils. Microcapsules Haussner ratio values (1.49 - 1.61) showed the cohesiveness of the powders, this was confirmed by microscopy techniques, obtaining high particles area values (177.4 - 4460.5 μm2). Corn oil extracts showed higher carotenoids (> 10%), chlorophyll a (approximately 5%) and chlorophyll b (>40%) content as compared with safflower oil extracts. However, the hygroscopicity values of the corn oil microcapsules (15.70 - 18.34 g water/ 100 g dry capsules) caused the dissolution of the wall materials exposing the microencapsulated oil, changing the sample color from white to pale yellow.

Translated title of the contributionMicroencapsulation of biocompounds from avocado leaves oily extracts
Original languageEnglish
Pages (from-to)1261-1276
Number of pages16
JournalRevista Mexicana de Ingeniera Quimica
Volume18
Issue number3
DOIs
StatePublished - 1 Sep 2019

Keywords

  • Antioxidants
  • Avocado leaves
  • Microencapsulation
  • Oily extracts
  • Spray drying

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