Flavonol-Aluminum Complex Formation: Enhancing Aluminum Accumulation in Tea Plants.
J Agric Food Chem
; 70(43): 14096-14108, 2022 Nov 02.
Article
em En
| MEDLINE
| ID: mdl-36256444
ABSTRACT
Polyphenol-rich tea plants are aluminum (Al) accumulators. Whether an association exists between polyphenols and Al accumulation in tea plants remains unclear. This study revealed that the accumulation of the total Al and bound Al contents were both higher in tea samples with high flavonol content than in low, and Al accumulation in tea plants was significantly and positively correlated with their flavonol content. Furthermore, the capability of flavonols combined with Al was higher than that of epigallocatechin gallate (EGCG) and root proanthocyanidins (PAs) under identical conditions. Flavonol-Al complexes signals (94 ppm) were detected in the tender roots and old leaves of tea plants through solid-state 27Al nuclear magnetic resonance (NMR) imaging, and the strength of the signals in the high flavonol content tea samples was considerably stronger than that in the low flavonol content tea samples. This study provides a new perspective for studying Al accumulation in different tea varieties.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
/
Agentes_cancerigenos
Base de dados:
MEDLINE
Assunto principal:
Camellia sinensis
/
Alumínio
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China