Antioxidant activity of membrane-fractionated coffee extracts in dependence of the storage conditions

Antioxidant activity of membrane-fractionated coffee extracts in dependence of the storage conditions

Present paper aims at one of the important aspects of the application of products with antioxidant activity: namely the preservation and change of their properties during the storage in different conditions, as well as their reliable characterisation. The tests of antioxidant properties were conduct...

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Veröffentlicht in:Journal of physics. Conference series 2016-10, Vol.764 (1), p.12007
Hauptverfasser: Mitev, D, Peshev, D, Peev, G, Peeva, L
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Antioxidants
Coffee
Membranes
Nanofiltration
Physics
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Peev, G
Peeva, L
description Present paper aims at one of the important aspects of the application of products with antioxidant activity: namely the preservation and change of their properties during the storage in different conditions, as well as their reliable characterisation. The tests of antioxidant properties were conducted with membrane-separated coffee extracts, isolated using a "Microdyn Nadir NP030P" type of commercial nanofiltration membrane (30% retention of NaCl; MWCO∼400). Prepared coffee permeates and retentates were stored 0÷10 days in cool/warm conditions, with/without air access and at different illumination conditions. The kinetics of content changes was evaluated according to Folin-Ciocalteu method of total phenolic/reducing content determination.
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subjects Antioxidants
Coffee
Membranes
Nanofiltration
Physics
title Antioxidant activity of membrane-fractionated coffee extracts in dependence of the storage conditions
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