改性酒用活性炭的制备条件优化及其对白酒中糠醛的吸附性能研究  

Optimization of preparation conditions of modified activated carbon for alcoholic beverages and adsorption performance of furfural in Baijiu

作　　者：彭晶晶 赵金松 张良 张明文[4] 冉国清 PENG Jingjing;ZHAO Jinsong;ZHANG Liang;ZHANG Mingwen;RAN Guoqing(School of Bioengineering,Sichuan University of Science&Engineering,Zigong 643002,China;Sichuan Liquor Group Co.,Ltd.,Luzhou 646000,China;Luzhou Laojiao Co.,Ltd.,Luzhou 646000,China;Luzhou Nanfang Filtration Equipment Co.,Ltd.,Luzhou 646000,China)

机构地区：[1]四川轻化工大学生物工程学院,四川自贡643002 [2]四川省酒业集团有限责任公司,四川泸州646000 [3]泸州老窖股份有限公司,四川泸州646000 [4]泸州市南方过滤设备有限公司,四川泸州646000

出　　处：《中国酿造》2025年第3期80-86,共7页China Brewing

基　　金：泸州市校地院企科技合作项目(2024XDY199)。

摘　　要：该研究采用磷酸法,选取七种酒用活性炭中吸附效果最差的活性炭进行改性,提升其去除糠醛能力的同时减少其对白酒中风味成分的吸附。以白酒中糠醛去除率和总酯保留率综合指标为评价指标,以磷酸含量、浸渍比、活化温度、活化时间、碳化温度、碳化时间为影响因素,通过单因素与正交试验优化改性活性炭制备条件。运用BET比表面积测试法、扫描电镜(SEM)、傅里叶红外光谱(FTIR)等技术对改性前后活性炭进行结构表征,并对改性酒用活性炭进行吸附性能分析。结果表明,最优制备条件为磷酸含量35%、浸渍比1∶7、活化温度200℃、活化时间2 h、碳化温度300℃、碳化时间2.0 h。在此优化条件下,改性活性炭对糠醛去除率由13.18%提升至39.28%,对总酯保留率由87.09%提升至97.96%。BET、SEM及FTIR结果显示,磷酸法改性酒用活性炭增大了酒用活性炭的孔径(平均孔径>2 nm),提高了吸附效率。吸附性能试验结果表明,改性活性炭能有效能有效的提升活性炭的吸附性能。In this study,the activated carbon with the worst adsorption effect among the 7 activated carbon was modified by phosphoric acid method,so as to improve its ability to remove furfural and reduce its adsorption of flavor components in Baijiu.With the comprehensive indexes of furfural removal rate and total ester retention rate in Baijiu as evaluation indexes,phosphoric acid content,impregnation ratio,activation temperature,time,carbonation temperature and time as influencing factors,the preparation conditions of modified activated carbon were optimized by single factor and orthogonal experiments.The structure of activated carbon before and after modification was characterized by BET specific surface area measurement method,scanning electron microscopy(SEM)and Fourier infrared spectroscopy(FTIR),and the adsorption properties of modified activated carbon for alcoholic beverages were analyzed.The results showed that the optimum preparation conditions were as follows:phosphoric acid content 35%,impregnation ratio 1∶7,activation temperature 200℃,time 2 h,carbonization temperature 300℃,and time 2.0 h.Under these optimal conditions,the furfural removal rate by modified activated carbon was increased from 13.18%to 39.28%,and the retention rate of total ester was increased from 87.09%to 97.96%.BET,SEM and FTIR results showed that the pore size(average pore size>2 nm)of activated carbon for alcoholic beverages was increased by phosphoric acid method.The adsorption performance tests results showed that the modified activated carbon could effectively improve the adsorption performance of activated carbon.

关 键 词：酒用活性炭 改性 白酒 糠醛 制备条件优化 结构表征 吸附性能 

分 类 号：TS261[轻工技术与工程—发酵工程] TS209[轻工技术与工程—食品科学与工程]