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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020

Autores

Mendoza, J (Autor) Outra; Joana Oliveira (Autor) FCUP; Araujo, P (Autor) Outra; Basilio, N (Autor) Outra; Teixeira, N (Autor) Outra; Natercia F Bras (Autor) FCUP; Pina, F (Autor) Outra; Yoshida, K (Autor) Outra; Victor de Freitas (Autor) FCUP

Revista

Título: Dyes and Pigments

Vol. 180

ISSN: 0143-7208

Editora: Elsevier

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 11 Citações

Outras Informações

ID Authenticus: P-00S-07Q

DOI: 10.1016/j.dyepig.2020.108382

Abstract (EN): 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, H-1 NMR and circular dichroism (CD). Theoretical calculations were also performed to describe the intramolecular interactions. At higher temperature (>60 degrees 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 degrees C and 25 degrees C shows that the increase of temperature stabilizes the quinoidal base of this later.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7