Smoke Taint
Testing
Smoke taint occurs when grapes or other crops come into contact with smoke, usually from wildfires, causing undesirable flavors and aromas to develop in the final product.
These compounds, such as volatile phenols, can impart characteristics reminiscent of burnt, ashy, or smoky flavors, which can significantly affect the quality and marketability of the affected produce.
Assessing and Managing Impact on Wine and Agriculture
The smoke taint test involves collecting samples of the potentially impacted material, such as grape berries, leaves, or finished wines, and subjecting them to laboratory analysis. At AAL, we are using LC-MS/MS to identify and quantify specific smoke-related compounds present in the samples.
During the analysis, the concentration of key compounds, such as guaiacol and 4-methylguaiacol, is determined. These compounds are known to contribute to the characteristic smoky aroma and taste associated with smoke taint. By measuring the levels of these compounds, experts can assess the potential impact of smoke exposure on the sensory attributes of the tested material.
The results of the smoke taint test help winemakers, grape growers, and agricultural producers make informed decisions regarding the affected crops. Based on the test outcomes, they can determine the suitability of the material for winemaking or other uses. Additionally, the test can provide guidance on potential mitigation strategies, such as different winemaking techniques or blending options, to minimize the impact of smoke taint on the final product.