Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids
In this study, eight different types of imidazolium-based ionic liquids (ILs) were applied as new solvents in the extraction of flavonoids from grape skin, and compared to the conventional organic solvent extraction that was not reported earlier. The structure of anions, cations and concentration of...
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University of Zagreb Faculty of Food Technology and Biotechnology
2017-01-01
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| Series: | Food Technology and Biotechnology |
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| Online Access: | https://hrcak.srce.hr/file/275174 |
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| author | Natka Ćurko Marina Tomašević Marina Cvjetko Bubalo Leo Gracin Ivana Radojčić Redovniković Karin Kovačević Ganić |
| author_facet | Natka Ćurko Marina Tomašević Marina Cvjetko Bubalo Leo Gracin Ivana Radojčić Redovniković Karin Kovačević Ganić |
| author_sort | Natka Ćurko |
| collection | DOAJ |
| description | In this study, eight different types of imidazolium-based ionic liquids (ILs) were applied as new solvents in the extraction of flavonoids from grape skin, and compared to the conventional organic solvent extraction that was not reported earlier. The structure of anions, cations and concentration of ILs significantly affected extraction yields. The highest mass fractions of proanthocyanidins and anthocyanins were obtained with 2.5 mol/L of 1-butyl-3-methylimidazolium bromide [C4mim][Br] and 2.5 mol/L of 1-ethyl-3-methylimidazolium bromide [C2mim][Br], respectively. The studied ILs provided an excellent preliminary result in the extraction of anthocyanins. Significantly higher mass fractions of total and all free anthocyanins were extracted with 2.5 mol/L of [C2mim][Br] and 2.5 mol/L of 1-methylimidazolium hydrogen sulfate [mim][HSO4] than with conventional solvent with the exception of anthocyanin-3-O-acetylmonoglucosides in the latter. On the other hand, 2.5 mol/L of [C4mim][Br] and 2.5 mol/L of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate [sC4mim][HSO4] showed significantly higher selectivity towards anthocyanin-3-O-acetylmonoglucosides and anthocyanin-3-(6-O-p-coumaroyl)monoglucosides. |
| first_indexed | 2024-04-24T09:29:28Z |
| format | Article |
| id | doaj.art-fe8fb2777e9147939469e273a06cd151 |
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| issn | 1330-9862 1334-2606 |
| language | English |
| last_indexed | 2024-04-24T09:29:28Z |
| publishDate | 2017-01-01 |
| publisher | University of Zagreb Faculty of Food Technology and Biotechnology |
| record_format | Article |
| series | Food Technology and Biotechnology |
| spelling | doaj.art-fe8fb2777e9147939469e273a06cd1512024-04-15T14:23:37ZengUniversity of Zagreb Faculty of Food Technology and BiotechnologyFood Technology and Biotechnology1330-98621334-26062017-01-0155342943710.17113/ftb.55.03.17.5200Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic LiquidsNatka Ćurko0Marina Tomašević1Marina Cvjetko Bubalo2Leo Gracin3Ivana Radojčić Redovniković4Karin Kovačević Ganić5University of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Food Technology and Biotechnology, Pierott ij eva 6, HR-10000 Zagreb, CroatiaIn this study, eight different types of imidazolium-based ionic liquids (ILs) were applied as new solvents in the extraction of flavonoids from grape skin, and compared to the conventional organic solvent extraction that was not reported earlier. The structure of anions, cations and concentration of ILs significantly affected extraction yields. The highest mass fractions of proanthocyanidins and anthocyanins were obtained with 2.5 mol/L of 1-butyl-3-methylimidazolium bromide [C4mim][Br] and 2.5 mol/L of 1-ethyl-3-methylimidazolium bromide [C2mim][Br], respectively. The studied ILs provided an excellent preliminary result in the extraction of anthocyanins. Significantly higher mass fractions of total and all free anthocyanins were extracted with 2.5 mol/L of [C2mim][Br] and 2.5 mol/L of 1-methylimidazolium hydrogen sulfate [mim][HSO4] than with conventional solvent with the exception of anthocyanin-3-O-acetylmonoglucosides in the latter. On the other hand, 2.5 mol/L of [C4mim][Br] and 2.5 mol/L of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate [sC4mim][HSO4] showed significantly higher selectivity towards anthocyanin-3-O-acetylmonoglucosides and anthocyanin-3-(6-O-p-coumaroyl)monoglucosides.https://hrcak.srce.hr/file/275174anthocyaninsgrape skinHPLCionic liquidsproanthocyanidins |
| spellingShingle | Natka Ćurko Marina Tomašević Marina Cvjetko Bubalo Leo Gracin Ivana Radojčić Redovniković Karin Kovačević Ganić Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids Food Technology and Biotechnology anthocyanins grape skin HPLC ionic liquids proanthocyanidins |
| title | Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids |
| title_full | Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids |
| title_fullStr | Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids |
| title_full_unstemmed | Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids |
| title_short | Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids |
| title_sort | extraction of proanthocyanidins and anthocyanins from grape skin by using ionic liquids |
| topic | anthocyanins grape skin HPLC ionic liquids proanthocyanidins |
| url | https://hrcak.srce.hr/file/275174 |
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