Optimized aqueous extracts of maqui (Aristotelia chilensis) suitable for powder production.
作者： Francisco Garrido Makinistian , Paula Sette , Loreana Gallo , Verónica Bucalá , Daniela Salvatori
DOI: 10.1007/S13197-019-03840-4
关键词:
摘要: The aim of this work was to obtain powders rich in bioactive compounds from maqui berry aqueous extracts by spray drying. First, the process parameters extraction were optimized. optimal operating conditions found using an experimental Box–Behnken design with three factors: solvent/fruit ratio (2:1, 3.5:1 and 5:1), temperature (25, 50 75 °C) time (30, 120 min). Soluble solids content, monomeric anthocyanin content (ACY), total polyphenol (TPC) antioxidant capacity liquid analyzed as key responses find conditions. Secondly, best extract (solvent/fruit = 2:1; °C min) subjected effects different drying adjuvants (maltodextrin, colloidal silicon dioxide, arabic gum, microcrystalline cellulose) on flow properties, yield (PY), superficial color studied. product based dioxide presented powder properties: excellent flowability (α: 30.4 ± 0.7°, CI: 8.0 1.7%), adequate moisture (4.9 0.3%), very good PY (70 1%), high ACY (1528 41 mg cy-3glu/100 g powder) TPC (3936 132 GAE/100 powder), a purple hue. This offers valuable properties that allow its use, among other applications, functional ingredient, natural colorant nutraceutical product.
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