<abstract xmlns="http://www.w3.org/1999/xhtml"> The object of presented study was the evaluation of antioxidant activity of extract from Zingiber officinale. A method for the preparation of the extract was chosen, which enabled to isolate mostly phenolic compounds. According to the measurements with Folin-Ciocalteu reagent, obtained extract comprised total polyphenols (181.41 mgGAE/g of extract) from which flavonoids contributed to 7.8 % (14.15 mgquercetin/g of extract). Nuclear magnetic resonance (NMR) analysis showed that the phenolic ketones were predominant in the extracts of whole phenolic compounds. According to results of two spectrophotometric methods (ABTS and DPPH test), ginger extract showed stronger ability to scavenge DPPH radical than ABTS cation radical.</abstract>

The object of presented study was the evaluation of antioxidant activity of extract from Zingiber officinale. A method for the preparation of the extract was chosen, which enabled to isolate mostly phenolic compounds. According to the measurements with Folin-Ciocalteu reagent, obtained extract comprised total polyphenols (181.41 mgGAE/g of extract) from which flavonoids contributed to 7.8 % (14.15 mgquercetin/g of extract). Nuclear magnetic resonance (NMR) analysis showed that the phenolic ketones were predominant in the extracts of whole phenolic compounds. According to results of two spectrophotometric methods (ABTS and DPPH test), ginger extract showed stronger ability to scavenge DPPH radical than ABTS cation radical.

Antioxidant activity of ginger extract and identification of its active components

Department of Nutrition and Food Assessment, Faculty of Chemical and Food Technology, Radlinského 9, 812 37 Bratislava, Slovakia

Department of NMR Spectroscopy and Mass Spectrometry, Faculty of Chemical and Food Technology, Radlinského 9, 812 37 Bratislava, Slovakia

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The object of presented study was the evaluation of antioxidant activity of extract from Zingiber officinale. A method for the preparation of the extract was...

Antioxidant activity of ginger extract and identification of its active components

Publié en ligne: 05 déc. 2015

Pages: 115 - 119

DOI: https://doi.org/10.1515/acs-2015-0020

Mots clés
ginger, phenols and flavonoids, NMR analysis, antioxidant activity

© Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Antioxidant activity of ginger extract and identification of its active components

Publié en ligne: 05 déc. 2015

Pages: 115 - 119

DOI: https://doi.org/10.1515/acs-2015-0020

Mots clésginger, phenols and flavonoids, NMR analysis, antioxidant activity

© Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
ginger, phenols and flavonoids, NMR analysis, antioxidant activity