3.1.4. Elemental composition
The elemental composition of the wines are shown in Table 4, where it can be observed that wines produced with dehydrated grapes present significantly highermineral contents (p < 0.05) than the control wines. It was verified that the mineral content of the wines differs for each grape variety and according to the dehydration percentage. The macroelement found in highest concentrations in the wines was potassium, followed by sodium,magnesiumand calcium. Potassiumis usually found as the element with highest concentration in dried grape (Panceri et al., 2013). The
highest potassium contents observed can be attributed to the concentration of this mineral in the grapes and also an increase in the solid/liquid ratio caused by the water loss during the berry dehydration (Panceri et al., 2013). The macroelements, such as calcium, magnesium and sodium, are extracted mainly from the soil and also, the use of oenological products, such as clarifiers and stabilizers, during winemaking can increase the levels of sodium
and calcium (Catarino et al., 2008).
3.1.4. Elemental compositionThe elemental composition of the wines are shown in Table 4, where it can be observed that wines produced with dehydrated grapes present significantly highermineral contents (p < 0.05) than the control wines. It was verified that the mineral content of the wines differs for each grape variety and according to the dehydration percentage. The macroelement found in highest concentrations in the wines was potassium, followed by sodium,magnesiumand calcium. Potassiumis usually found as the element with highest concentration in dried grape (Panceri et al., 2013). Thehighest potassium contents observed can be attributed to the concentration of this mineral in the grapes and also an increase in the solid/liquid ratio caused by the water loss during the berry dehydration (Panceri et al., 2013). The macroelements, such as calcium, magnesium and sodium, are extracted mainly from the soil and also, the use of oenological products, such as clarifiers and stabilizers, during winemaking can increase the levels of sodiumand calcium (Catarino et al., 2008).
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