The main impacts in wine production are related to the cultivation of grapes and to the transport phase of wines, while the winemaking phase often shows small impacts. However, winemaking is easier to be controlled than the other phases. Usually, LCA studies assess the impact of winemaking though the oenological products used and reporting the water and electricity consumptions related to the whole phase. Other winemaking data are difficult to be collected due to costs and time-consuming measures required. Technical sheets of devices could be helpful to fulfil this gap. Technical sheets are free and easy to be found. However, to be introduced in a LCA analysis they require assumptions and data from literature papers. This work presents the assessment of the environmental impacts associated with grape pressing during a white wine production. Here, data from technical sheets was used, and the effect of assumptions made on the final LCA results was tested with a sensitivity analysis. Furthermore, the variability related to the different presses available on the market was discussed. From the technical sheets the yields, the electricity consumption and the masses were found for many presses. To reduce the environmental impact of pressing, the yields should be as high as possible. Obviously, the lower quality obtained at the higher pressures must be considered with a careful management of the fractions obtained. Small processes also have higher impact. Technical sheets could be used to deepen the impacts of pressing phase during white winemaking.

Assessment of grape pressing environmental performance with device technical sheets

Guerrini L.
2024

Abstract

The main impacts in wine production are related to the cultivation of grapes and to the transport phase of wines, while the winemaking phase often shows small impacts. However, winemaking is easier to be controlled than the other phases. Usually, LCA studies assess the impact of winemaking though the oenological products used and reporting the water and electricity consumptions related to the whole phase. Other winemaking data are difficult to be collected due to costs and time-consuming measures required. Technical sheets of devices could be helpful to fulfil this gap. Technical sheets are free and easy to be found. However, to be introduced in a LCA analysis they require assumptions and data from literature papers. This work presents the assessment of the environmental impacts associated with grape pressing during a white wine production. Here, data from technical sheets was used, and the effect of assumptions made on the final LCA results was tested with a sensitivity analysis. Furthermore, the variability related to the different presses available on the market was discussed. From the technical sheets the yields, the electricity consumption and the masses were found for many presses. To reduce the environmental impact of pressing, the yields should be as high as possible. Obviously, the lower quality obtained at the higher pressures must be considered with a careful management of the fractions obtained. Small processes also have higher impact. Technical sheets could be used to deepen the impacts of pressing phase during white winemaking.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3529547
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