The peculiarity of malvidin 3-O-(6-O-p-coumaroyl) glucoside aggregation. Intra and intermolecular interactions

Mendoza, Johan; Oliveira, Joana; Araújo, Paula; Basílio, Nuno; Teixeira, Natércia; Brás, Natércia F.; Pina, Fernando; Yoshida, Kumi; de Freitas, Victor

doi:https://doi.org/10.1016/j.dyepig.2020.108382

Please use this identifier to cite or link to this item: http://hdl.handle.net/10362/113065

Title:	The peculiarity of malvidin 3-O-(6-O-p-coumaroyl) glucoside aggregation. Intra and intermolecular interactions
Author:	Mendoza, Johan Oliveira, Joana Araújo, Paula Basílio, Nuno Teixeira, Natércia Brás, Natércia F. Pina, Fernando Yoshida, Kumi de Freitas, Victor
Keywords:	CD Coumaroyl derivatives Intramolecular and intermolecular interactions NMR Oenin Temperature Chemical Engineering(all) Process Chemistry and Technology
Issue Date:	Sep-2020
Citation:	Mendoza, J., Oliveira, J., Araújo, P., Basílio, N., Teixeira, N., Brás, N. F., Pina, F., Yoshida, K., & de Freitas, V. (2020). The peculiarity of malvidin 3-O-(6-O-p-coumaroyl) glucoside aggregation. Intra and intermolecular interactions. Dyes and Pigments, 180, Article 108382. https://doi.org/10.1016/j.dyepig.2020.108382
Abstract:	The aggregation of malvidin 3-O-(6-O-p-coumaroyl) glucoside flavylium cation (OeninCoum) in water is reported. Intra and intermolecular interactions of OeninCoum were characterized by UV–vis absorption, 1H NMR and circular dichroism (CD). Theoretical calculations were also performed to describe the intramolecular interactions. At higher temperature (>60 °C) the intermolecular aggregates are disrupted but CD signal attributed to an intramolecular interaction remains. Moreover, the kinetic and thermodynamic data for Oenin and OeninCoum at 50 °C and 25 °C shows that the increase of temperature stabilizes the quinoidal base of this later.
Description:	UIDB/50006/2020 PTDC/QUI-OUT/29013/2017 MEX/Ref. 288188 SFRH/BD/143309/2019 IF/00225/2015 IF/01355/2014 CEECIND/00466/2017 REQUIMTE/EEC2018/PTDC/QUI-OUT/29925/2017
Peer review:	yes
URI:	http://hdl.handle.net/10362/113065
DOI:	https://doi.org/10.1016/j.dyepig.2020.108382
ISSN:	0143-7208
Appears in Collections:	FCT: DQ - Artigos em revista internacional com arbitragem científica

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