Osete-Alcaraz Lucía, Gómez-Plaza Encarna, Oliva-Ortiz José, Cámara Miguel Ángel, Jørgensen Bodil, Jurado-Fuentes Ricardo, Bautista-Ortín Ana Belén
Department of Food Science and Technology, Faculty of Veterinary Sciences, University of Murcia, 30100 Murcia, Spain.
Department of Agricultural Chemistry, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain.
Foods. 2025 Apr 29;14(9):1565. doi: 10.3390/foods14091565.
Grape pomace is the largest by-product in the oenological industry, and in recent years, there have been multiple attempts to turn it into a high-value product, such as a fining agent. However, most of these attempts have usually been conducted with low volumes of wine, and/or in static conditions, using a long contact time between the fibre and wine. To speed up the fining process, this study evaluated the effectiveness of three pomace fibres and a commercial fibre in improving the safety of a young red wine, previously contaminated with ochratoxin A, histamine, and various pesticides, using a continuous filtration system. All the pomace fibres were capable of reducing the OTA concentration by around 50%, and one of the tested fibres exhibited a strong ability to decrease most of the pesticides present in the wine, with the results being even better than when this fibre was used in static conditions. All the tested fibres similarly reduced the tannin concentration of the wines, without having a major impact in the colour index. These results prove that pomace grape fibres are an effective fining agent suitable for use in a continuous filtration system, allowing for a reduction in the fining time from days to hours.
葡萄皮渣是酿酒行业中产量最大的副产品，近年来，人们多次尝试将其转化为高价值产品，比如澄清剂。然而，这些尝试大多是在少量葡萄酒中进行的，和/或在静态条件下进行，纤维与葡萄酒之间的接触时间较长。为了加快澄清过程，本研究使用连续过滤系统，评估了三种皮渣纤维和一种商业纤维在提高一款先前被赭曲霉毒素A、组胺和各种农药污染的年轻红葡萄酒安全性方面的有效性。所有皮渣纤维都能够将OTA浓度降低约50%，其中一种受试纤维表现出强大的降低葡萄酒中大多数农药含量的能力，其效果甚至优于该纤维在静态条件下使用时的效果。所有受试纤维同样降低了葡萄酒中的单宁浓度，而对颜色指数没有重大影响。这些结果证明，葡萄皮渣纤维是一种适用于连续过滤系统的有效澄清剂，能够将澄清时间从数天缩短至数小时。
