中外葡萄与葡萄酒Issue(4)：111-116,6.DOI:10.13414/j.cnki.zwpp.2024.04.017
蒸汽蒸馏法对葡萄酒酒精度的快速测定及应用
Rapid Determination and Application of Wine Alcohol by Steam Distillation
摘要
Abstract
In order to improve the shortcomings of distillation by water bath heating and improve the detection efficiency of alcohol content for wine,the Kjeldahl nitrogen analyzer was introduced to determine the alcohol content of wine based on steam distillation method,and precision and recovery experiments were carried out,as well as a comparative experiment between steam distillation and water bath distillation.The uncertainty analysis was conducted on the measurement methods,and their application and validation in teaching experiments.The results showed that the CV of alcohol content in wine samples tested by steam distillation method was smaller than that of water bath distillation method;through steam heating,the distillation process could be completed within 4 minutes,the detection time could be shortened by about half,and there was a better linear relationship between ethanol concentration and measurement results in the range of≤40% volume fraction,the standard deviation of alcohol content test for samples with added standards ranged from 0.13 to 0.45,the recovery rate was 98.55%,and the average RSD was 1.45% .The steam distillation method was easy to operate,improved detection efficiency,and had good accuracy.It could be applied to related production inspection or research and teaching.Based on the results,a preliminary design and improvement were made on the automatic distillation instrument for rapid determination of wine alcohol content.关键词
蒸汽蒸馏法/水浴蒸馏法/酒精度测定/教学应用/葡萄酒Key words
steam distillation/water bath distillation/alcohol content determination/teaching application/wine分类
轻工纺织引用本文复制引用
刘芳,耿利娜,张建丽,吕雪飞..蒸汽蒸馏法对葡萄酒酒精度的快速测定及应用[J].中外葡萄与葡萄酒,2024,(4):111-116,6.基金项目
教育部产学合作协同育人项目(202102201001,202102439017) （202102201001,202102439017）
北京理工大学开放实验项目(RS202109000049) （RS202109000049）
