INIQUI   05448
INSTITUTO DE INVESTIGACIONES PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
BIOACTIVE COMPOUNDS AND MICROENCAPSULATION EFFICIENCY OF BLUEBERRY MICROCAPSULES
Autor/es:
OLIVARES LA MADRID, A.P; VILLALVA, F; CRAVERO BRUNERI, A; ARMADA, M.
Revista:
ANNALS OF NUTRITION AND METABOLISM
Editorial:
KARGER
Referencias:
Lugar: Basel; Año: 2018 vol. 73
ISSN:
0250-6807
Resumen:
Introduction: Blueberries are rich in bioactive compounds (BAC) that prevent or delay the onset of degenerative diseases. Their short shelf life limits their availability, which has prompted the application of technological preservation processes such as spray drying.Objectives: To determine the content of BAC and the microencapsulation efficiency (EE) of microcapsules (MC) obtained by spray.Methods: Emerald blueberries from Extraberries S.A (Metán-Salta-Argentina) were stored in hermetic bags at-18ºC until used. Fruits were thawed and processed, the pulp was sieved (60mesh), and the juice was mixed with different barrier materials: maltodextrin (MD) 30%; arabic gum (AG) 30%; modified starch (MS) 30% and mixtures MD15%+AG15%; MD15%+MS15%; MD10%+AG10%+MS10%; and AG15%+MS15%. Seven MC were obtained for the determination of EE (Idham et al, 2012) and BAC: anthocyanins (A) (Giusty-Wrostald,2000); proanthocyanidins (PAC) by Vanillin/HCl (Price et al.,1978); polyphenols (PF) by FolinCiocalteu (Sinlgeton & Rossi,1965) and antioxidants (AT) by ABTS (Re, et al 1999). BAC were determined in extracts with acidified alcohol, at 30°C±5 for 30 minutes. Results: EE was 86.27% MS; 85.45% MD; 82.35% MD+AG+MS; 81.42% AG; 74.65% MD+MS; 74.5%AG+MS and 67.1% in MD+AG. A were: 3414mg AG+MS; 2509mg MD; 2091.67mg MD+MS; 1586mg MS; 1097.93mg MD+AG+MS; 1020.93mg MD+AG and AG 789mg cyanidin3glucoside/100gr, respectively. PAC were: 1879.35mg, 1860.20mg, 1810.42mg, 1169.64mg, 976mg, 621.34mg, 598.21mg catechin in AG+MS; MD+MS; MD+MS; MD+AG; MD+AG+MS and AG, respectively. PF in MC were in MD+AG 872.76mg; MD 770.31mg, AG+MS 758.43mg, MD+MS 643.37mg, MD+AG+MS 586.67mg, AG 475mg and MS 265.61mg EAG. AT in MC were: in MD+MS+AG 741.01ul, MD+MS 731.34ul, MD+AG 664.25ul, MD 541, 87ul, MS 512.35ul, AG+MS 499.47ul and in AG 478, 54ulTrolox/100gr.Conclusions: Spray drying preserves BAC. The variability in content can be attributed to the coat material used