Seasonal variation in Hibiscus sabdariffa (Roselle) calyx phytochemical profile, soluble solids and α-glucosidase inhibition.
Food Chem
; 261: 164-168, 2018 Sep 30.
Article
em En
| MEDLINE
| ID: mdl-29739578
ABSTRACT
Seasonal variations in crops can alter the profile and amount of constituent compounds and consequentially any biological activity. Differences in phytochemical profile, total phenolic content and inhibitory activity on α-glucosidase (maltase) of Hibiscus sabdariffa calyces grown in South Western Nigeria were determined over wet and dry seasons. The phenolic profile, organic acids and sugars were analysed using HPLC, while inhibition of rat intestinal maltase was measured enzymically. There was a significant increase (1.4-fold; pâ¯≤â¯0.05) in total anthocyanin content in the dry compared to wet planting seasons, and maltase inhibition from the dry season was slightly more potent (1.15-fold, pâ¯≤â¯0.05). Fructose (1.8-fold), glucose (1.8-fold) and malic acid (3.7-fold) were significantly higher (pâ¯≤â¯0.05) but citric acid was lower (62-fold, pâ¯≤â¯0.008) in the dry season. Environmental conditions provoke metabolic responses in Hibiscus sabdariffa affecting constituent phytochemicals and nutritional value.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Extratos Vegetais
/
Hibiscus
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Inibidores de Glicosídeo Hidrolases
Limite:
Animals
País como assunto:
Africa
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article