UVaMOX, E.T.S. Ingenierías Agrarias, Universidad de Valladolid, Avda. Madrid 44, 34071 Palencia, Spain.
Anal Chim Acta. 2010 Feb 15;660(1-2):232-9. doi: 10.1016/j.aca.2009.09.048. Epub 2009 Oct 8.
Red wine tank aging is monitored by organoleptic analysis, therefore, it is necessary to use an objective parameter representing the process. Among the possible parameters to be checked, it stands out the knowledge of dissolved oxygen because it offers the possibility of anticipating undesirable situations that bring about too much oxidation. Dissolved oxygen measurement, with non-intrusive luminescent technology is becoming an effective alternative. Uncertainty arises when trying to choose the measuring point able to represent the entire tank since previous works have considered the existence of gradients throughout the volume of the treated wine. This paper shows the results obtained from the study of the existence and the quantification of gradients of the dissolved oxygen in a 15% hydroalcoholic solution during the micro-oxygenation process. Different measuring point placements are studied and the solutions to monitor the process by controlling a representative point are set out. A successful monitoring of a red wine tank aging with alternative oak products and adaptative micro-oxygenation has proved that an objective control of the process is, indeed, possible.
红葡萄酒罐陈酿通过感官分析进行监测，因此，有必要使用代表该过程的客观参数。在可能检查的参数中，溶解氧的知识尤为突出，因为它提供了预测可能导致过度氧化的不良情况的可能性。使用非侵入式荧光技术测量溶解氧正成为一种有效的替代方法。当试图选择能够代表整个罐的测量点时，就会出现不确定性，因为以前的工作已经考虑到了在处理过的酒的整个体积中存在梯度的情况。本文展示了在微氧处理过程中对 15%水醇溶液中溶解氧的存在和量化梯度进行研究的结果。研究了不同的测量点位置，并提出了通过控制代表点来监测过程的解决方案。通过使用替代橡木产品和自适应微氧处理成功监测红葡萄酒罐陈酿，证明了对该过程进行客观控制是可行的。
