Se obtuvieron extractos líquidos de cálices secos de flor de Jamaica (Hibiscus sabdariffa)
usando etanol: agua (en proporciones de 50: 50 y 70: 30%, v/v), agua, etanol: HCl 1.5 N (85: …

Carotenoids are natural lipophilic pigments and antioxidants that are present in many fruits
and vegetables. The consumption of carotenoids is correlated with positive health effects and …

The anthocyanin concentration of Vitis vinifera L. cvs. Cabernet Sauvignon, Merlot, Syrah,
and Monastrell grape skins was determined together with anthocyanin extractability at the …

The anthocyanin content and fingerprint of four different Vitis vinifera L. varieties (Cabernet
Sauvignon, Merlot, Syrah and Monastrell), the last grown in two different locations, were …

The morphology and composition of skin and pulp cell walls of four premium red wine grape
(Vitis vinifera L.) varieties were studied to determine whether the technological differences …

BACKGROUND: Grape skin cell walls form a barrier against the diffusion of colour. The
colour of red wines is mainly due to anthocyanins, although their concentration in wine is not …

The transference of proanthocyanidins from grapes to wine is quite low. This could be due,
among other causes, to proanthocyanidins being bound to grape cell wall polysaccharides, …

Aims: The knowledge of parameters as the quantity of anthocyanins and tannins present
during grape maturation, their evolution during the ripening period and extractability data could …

Phenolic compounds provide important quality attributes to red wines. These compounds
are found inside the vacuoles of the plant cells of the skin and seeds of the grape. During …

Carotenoids are natural pigments and antioxidants found in fruits and vegetables such as
carrot, tomato, orange, mango, yellow corn, pumpkin, and mamey. In this study, we evaluated …