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Stability of camu‐camu encapsulated with different prebiotic biopolymers
Author(s) -
A Figueiredo Jayne,
MT Lago Amanda,
M Mar Josiana,
S Silva Laiane,
A Sanches Edgar,
P Souza Tatiane,
A Bezerra Jaqueline,
H Campelo Pedro,
A Botrel Diego,
V Borges Soraia
Publication year - 2020
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10384
Subject(s) - maltodextrin , chemistry , ascorbic acid , prebiotic , water activity , food science , spray drying , relative humidity , water content , chromatography , physics , geotechnical engineering , engineering , thermodynamics
Abstract BACKGROUND A viable possibility for the best use of bioactive compounds present in camu‐camu, fruit native to the Amazonian rainforest, is the preparation of microcapsules using different biopolymers by the spray‐drying technique, which would increase the possibilities for innovation in the food industry, as well as facilitate the application in different food matrices. In this context, the chemical, physicochemical, and morphological properties and stability of camu‐camu extract (peel and pulp) spray‐dried using maltodextrin, inulin, and oligofructose as encapsulating agents were investigated, as well as lyophilized camu‐camu extract (CEL). Different relative humidities (22%, 51%, and 75%) and temperatures (25 °C and 45 °C) were evaluated. RESULTS The moisture, water activity, and solubility values varied from 18.4 to 107.9 g water per kilogram dry powder, 0.06 to 0.27, and 950.80 to 920.28 g microparticles per kilogram of water respectively. Retention of the bioactive compounds varied in the ranges 5.5–7.1 g per kilogram ascorbic acid fresh weight and 7.2–9.0 g per kilogram anthocyanins fresh weight. The increase in temperature and relative humidity during storage provided a significant decrease in the stability of the bioactive compounds for all treatments. However, the CEL presented higher water adsorption kinetics and degradation under all storage conditions, indicating the importance of the use of encapsulating agents. CONCLUSION In general, the prebiotic biopolymers used as encapsulating agents in the microencapsulation of extracts of camu‐camu by spray‐drying presented satisfactory results, suggesting that this technique is an effective strategy to increase the stability of bioactive compounds contained in fruits and vegetables. © 2020 Society of Chemical Industry