A rapid alcohol tester for determining alcoholic strengths of alcoholic beverages
LI Guohui1,2, GAO Hongbo1,2, Lv Zhiyuan3,CHANG Di1,2, WANG Daobing1,2, ZHONG Qiding1,2*
1(China National Research Institute of Food & Fermentation Industries Co.,Ltd, Beijing 100015, China) 2(National Standardization Center of Food & Fermentation, Beijing 100015, China) 3(Jinan Baotu Spring Brewery Co.,Ltd., Jinan 250115, China)
Abstract: In this paper, rapid distiller and alcohol tester were used to determine alcohol contents of alcoholic beverages. In addition, the optimal distillate volumes of different samples were validated, and the accuracy, precision, and applicability of the method were analyzed systematically. The results showed that there were no significant differences (P>0.05) in alcoholic strengths between reference samples as well as the alcoholic strengths measured at 15-25 ℃. The alcoholic strengths of distilled liquor and fermented wine with different alcohol contents were measured by the rapid method and the pycnometer method. The results of these two measurements were consistent and had no significant differences (P>0.05). Moreover, the precision of super alcomat (SD≤0.01% vol) was better than that of pycnometer method. Super alcomat could determine the alcoholic strength in 20 s. It is simple, effective, and with excellent repeatability, and thus can be widely used for production guidance and quality control for alcoholic beverages enterprises, as well as for testing organizations for daily inspection.
2019, Vol. 45 
