Concentration of Bioactive Compounds from Elderberry (Sambucus nigra L.) Juice by Nanofiltration Membranes |
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| Authors: | Rosa Tundis Monica R. Loizzo Marco Bonesi Vincenzo Sicari Claudia Ursino Ilaria Manfredi Carmela Conidi Alberto Figoli Alfredo Cassano |
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| Affiliation: | 1.Department of Pharmacy, Health and Nutritional Sciences,University of Calabria,Rende (CS),Italy;2.Department of Agricultural Science,Mediterranean University of Reggio Calabria,Reggio Calabria,Italy;3.Italian National Research Council (ITM-CNR),Institute on Membrane Technology,Rende (CS),Italy |
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| Abstract: | For the first time the chemical profile, physico-chemical parameters, inhibition of carbohydrate hydrolysing enzymes associated with type 2 diabetes, and radical scavenging properties of Sambucus nigra L. (elderberry) juice treated by nanofiltration (NF) were investigated. Three commercial NF membranes with different molecular weight cut-off (MWCO) (400 and 1000 Da) and polymeric material (composite fluoro-polymer and polyethersulphone) were tested. According to HPLC analyses, most part of bioactive compounds were retained by the NF membranes producing a retentate fraction of interest for the production of functional foods. The NP030 membrane, a polyethersulphone membrane with a MWCO of 400 Da, exhibited the highest rejection towards phenolic compounds when compared with the other selected membranes. Accordingly, the produced retentate fractions exhibited the highest radical scavenging activity. |
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