Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION
Volume 64, Issue 7, Pages 897-906Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/09637486.2013.809406
Keywords
Berries; bioactives; citrus; diabetes; isotonic drinks; obesity
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Funding
- Spanish Ministry of Economy and Competition through the Interministerial Commission for Science and Technology (CICYT) projects [AGL2007-61694/ALI, AGL2011-23690]
- Fun-c-Food Research Project from Consolider Ingenio [CSD2007-00063]
- Spanish National Research Council (CSIC)
- European Social Funds
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The aim of the study was to design new isotonic drinks with lemon juice and berries: maqui [Aristotelia chilensis (Molina) Stuntz], acai (Euterpe oleracea Mart.) and blackthorn (Prunus spinosa L.), following on from previous research. Quality parameters - including colour (CIELab parameters), minerals, phytochemical identification and quantification by high-performance liquid chromatography with diode array detector, total phenolic content by the Folin-Ciocalteu reagent, the antioxidant capacity (ABTS(+), DPPH center dot and O-2(center dot-) assays) and biological activities (in vitro alpha-glucosidase and lipase inhibitory effects) - were tested in the samples and compared to commercially available isotonic drinks. The new isotonic blends with lemon and anthocyanins-rich berries showed an attractive colour, especially in maqui samples, which is essential for consumer acceptance. Significantly higher antioxidant and biological effects were determined in the new blends, in comparison with the commercial isotonic beverages.
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