Validation of a new method for the rapid determination of free sulfur dioxide in wine

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY International Journal of Agriculture and Natural Resources Pub Date : 2023-01-01 DOI:10.7764/ijanr.v50i2.2398
E. Bordeu, Lorena Macarena Villalobos, Natalia Brossard
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Abstract

Sulfur dioxide is widely used in most wines around the world. The determination of free SO2 is probably the most frequently conducted analysis in the wine industry used to assure wine conservation. The most frequently used methods of analysis are the aeration-oxidation method and the Ripper method. Both methods are relatively long and require specialized technicians. A new methodology based on voltammetry has been developed. It is based on a specialized hand-held automatic and fast analyzer that uses analytical stripes. This study compared this new method with the traditional aeration-oxidation and Ripper methods in a wide range of red and white wines. The results showed a good correlation of the voltametric method with the aeration-oxidation method as a standard and very similar results were observed with the Ripper method. Variability and precision were also high, validating the use of the proposed method for daily use in cellar work.
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快速测定葡萄酒中游离二氧化硫新方法的验证
二氧化硫在世界上大多数葡萄酒中被广泛使用。游离二氧化硫的测定可能是葡萄酒行业中最常用的分析方法,用于确保葡萄酒的保存。最常用的分析方法是曝气氧化法和开膛手法。这两种方法都比较长,需要专门的技术人员。一种基于伏安法的新方法得到了发展。它是基于一个专门的手持自动和快速分析仪,使用分析条纹。本研究将这种新方法与传统的曝气氧化法和开膛法进行了比较,并对各种红、白葡萄酒进行了研究。结果表明,伏安法与曝气氧化法具有良好的相关性,与Ripper法的结果非常相似。变异性和精度也很高,验证了所提出的方法在地窖工作中的日常使用。
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