Physicochemical properties and bioactive compounds content in encapsulated freeze-dried powders obtained from blueberry, elderberry, blackcurrant and maqui berry
Abstract: Background: Berry fruits stand out for their high contents of anthocyanins responsible for their red-purple color. The region of Patagonia, Argentina, is a significant cultivar region of these fruits. Due to berries very short shelf-life, it is interesting the development of dehydrated products that can be stored at room temperature and still be a source of bioactive components and natural colorants. Objective: The objective of this work was to evaluate the effect of freeze-drying process and storage at 38°C on the levels of bioactive compounds and color, in lyophilized products based on blueberry, blackcurrant, elderberry and maqui berry pulps from the El Bolson area, Rio Negro, Argentina. Methods: Fruit pulps with addition of encapsulating agents (Maltodextrin/Arabic gum) were freeze-dried and evaluated for the content of monomeric anthocyanins, total polyphenols, antioxidant capacity, color (CIELab parameters) and physical characteristics. Results: The obtained freeze-dried powders showed high levels of retention of bioactive compounds, yielding between 68.2 and 99.6% of retention of polyphenols and anthocyanins depending on the fruit. Color parameters were also stable after freeze-drying and during 60 days of storage at 38°C. Conclusions: The obtained stable powder ingredients based on berries from Patagonia can be used as a source of bioactive compounds and pigments.
| Main Authors: | , , |
|---|---|
| Format: | Artículo biblioteca |
| Language: | eng |
| Published: |
Ios Press
2019
|
| Subjects: | ARANDANO, SAUCO, CASSIS, POLIFENOLES, ANTOCIANINAS, |
| Online Access: | https://repositorio.uca.edu.ar/handle/123456789/8774 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|