A first approach towards the relationship between grape skin cell-wall composition and anthocyanin extractability

摘要: The composition of skin cell-walls from four different grape varieties (Vitis vinifera L., cv. Cabernet Sauvignon, Merlot, Syrah and Monastrell, the later harvested in three locations) has been studied, trying to correlate those differences found cell-wall among with their degree ripeness easiness anthocyanin extractability. results an extractability assay showed that anthocyanins Monastrell skins might be more difficult extract than other varieties. study some uronic acids, cellulosic glucose, proteins polyphenol content varieties, also between grapes cultivated locations were detected. Little could samples regarding non-cellulosic neutral sugars. In look if index related help clarify mechanism involved extractability, a multiple regression analysis was conducted. model built up explaining high percentage variability index, using components as independent variables. Following this approach, on based pectin cellulose content, but also, occurring arabinoxylan, arabinogalactan xyloglucan importance.