Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation

Intermolecular copigmentation denotes the interaction between colored anthocyanins and the colorless copigment, which is not bound covalently to the anthocyanin molecule. This is the first study to investigate the effect of intermolecular copigmentation on the stability of individual anthocyanins fr...

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Main Authors: Mohamad Azman, Ezzat, Yusof, Nurhayati, Chatzifragkou, Afroditi, Charalampopoulos, Dimitris
Format: Article
Published: Multidisciplinary Digital Publishing Institute 2022
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author Mohamad Azman, Ezzat
Yusof, Nurhayati
Chatzifragkou, Afroditi
Charalampopoulos, Dimitris
author_facet Mohamad Azman, Ezzat
Yusof, Nurhayati
Chatzifragkou, Afroditi
Charalampopoulos, Dimitris
author_sort Mohamad Azman, Ezzat
collection UPM
description Intermolecular copigmentation denotes the interaction between colored anthocyanins and the colorless copigment, which is not bound covalently to the anthocyanin molecule. This is the first study to investigate the effect of intermolecular copigmentation on the stability of individual anthocyanins from dried blackcurrant pomace (DBP) using four pure phenolic acids as copigments (ferulic, caffeic, chlorogenic, and rosmarinic acid). Studies were performed at pH 3.0 and pH 6.0, with a copigment/anthocyanin extract molar ratio of 5:1, during storage at 20 °C. At both pH 3.0 and 6.0, rosmarinic acid showed the strongest hyperchromic and bathochromic effects (p < 0.05) on day 0. However, rosmarinic acid showed low stability during storage. At pH 3.0, chlorogenic acid and control samples were capable of maintaining very high levels of total anthocyanin stability during storage (p < 0.05). On the other hand, ferulic acid and control samples had the longest estimated half-life during storage at pH 6.0. Intermolecular copigmentation successfully increased the half-life, color retention, and antioxidant activity of the anthocyanin solution, with cyanidin-3-O-glucoside (C3G) exhibiting the highest stability at both pH values. Overall, anthocyanins from DBP, in combination with chlorogenic or ferulic acid, showed potential for use in commercial food applications.
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spelling upm.eprints-1032812023-11-07T07:08:20Z http://psasir.upm.edu.my/id/eprint/103281/ Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation Mohamad Azman, Ezzat Yusof, Nurhayati Chatzifragkou, Afroditi Charalampopoulos, Dimitris Intermolecular copigmentation denotes the interaction between colored anthocyanins and the colorless copigment, which is not bound covalently to the anthocyanin molecule. This is the first study to investigate the effect of intermolecular copigmentation on the stability of individual anthocyanins from dried blackcurrant pomace (DBP) using four pure phenolic acids as copigments (ferulic, caffeic, chlorogenic, and rosmarinic acid). Studies were performed at pH 3.0 and pH 6.0, with a copigment/anthocyanin extract molar ratio of 5:1, during storage at 20 °C. At both pH 3.0 and 6.0, rosmarinic acid showed the strongest hyperchromic and bathochromic effects (p < 0.05) on day 0. However, rosmarinic acid showed low stability during storage. At pH 3.0, chlorogenic acid and control samples were capable of maintaining very high levels of total anthocyanin stability during storage (p < 0.05). On the other hand, ferulic acid and control samples had the longest estimated half-life during storage at pH 6.0. Intermolecular copigmentation successfully increased the half-life, color retention, and antioxidant activity of the anthocyanin solution, with cyanidin-3-O-glucoside (C3G) exhibiting the highest stability at both pH values. Overall, anthocyanins from DBP, in combination with chlorogenic or ferulic acid, showed potential for use in commercial food applications. Multidisciplinary Digital Publishing Institute 2022 Article PeerReviewed Mohamad Azman, Ezzat and Yusof, Nurhayati and Chatzifragkou, Afroditi and Charalampopoulos, Dimitris (2022) Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation. Molecules, 27 (17). art. no. 5489. pp. 1-18. ISSN 1420-3049 https://www.mdpi.com/1420-3049/27/17/5489 10.3390/molecules27175489
spellingShingle Mohamad Azman, Ezzat
Yusof, Nurhayati
Chatzifragkou, Afroditi
Charalampopoulos, Dimitris
Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title_full Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title_fullStr Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title_full_unstemmed Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title_short Stability enhancement of anthocyanins from blackcurrant (Ribes nigrum l.) Pomace through intermolecular copigmentation
title_sort stability enhancement of anthocyanins from blackcurrant ribes nigrum l pomace through intermolecular copigmentation
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AT chatzifragkouafroditi stabilityenhancementofanthocyaninsfromblackcurrantribesnigrumlpomacethroughintermolecularcopigmentation
AT charalampopoulosdimitris stabilityenhancementofanthocyaninsfromblackcurrantribesnigrumlpomacethroughintermolecularcopigmentation