提示
活性炭吸附减除黄酒中的氨基甲酸乙酯
首发时间：2018-04-16
摘要：针对中国传统黄酒中高含量氨基甲酸乙酯（ec）的问题，从酿酒行业常用的7种不同吸附材料中比较筛选ec吸附减除性能较为优良的材料，并对其黄酒中ec的吸附效果进行较系统的考察。结果表明：活性炭可有效地吸附减除黄酒中ec，采用柱式动态吸附可以得到更好的ec减除效果。不同材质的活性炭中，椰壳质小颗粒活性炭和木屑活性炭的ec减除效果相对更好，处理10倍柱体积黄酒，ec减除率均大于85%。控制处理流速及活性炭的酸化可以调节吸附效果。对于ec浓度较高（> 600 ppb）的黄酒样品吸附处理后ec去除率也可达60%左右。随着处理量的增加，活性炭的吸附作用逐渐降低，吸附处理对黄酒主要理化指标影响不大，但风味物质含量变化明显。该方法可作为降低黄酒中高ec含量的一种应急措施。
for information in english, please click here
reduction of ethyl carbamate in huangjiu by adsorption with activated carbon
abstract：based on the removal efficiency of ethyl carbamate (ec), seven different adsorption materials commonly used in the alcoholic beverage industry were tasted to reduce ec content in traditional huangjiu with high ec concentration, and the adsorbent with best adsorption efficiency was further investigated. the results showed that activated carbon can adsorbed ec in huangjiu effectively, and a better reduction efficiency of ec can be obtained using dynamic column adsorption with it. among different activated carbons, the coconut shell granular activated carbon and woodchip activated carbon provided relatively more ec reduction. after adsorption treatments of huangjiu samples with 10 bed volume (bv) by them, ec of more than 85% were removed. the adsorption efficiency of ec can be modulated by controlling the flow velocity and acid modification of the activated carbon. even for the huangjiu with high concentration of ec (more than 600 ppb), 60% ec can be removed after adsorption by activated carbon. however, with the increase of treatment volume, the adsorption efficiency of ec would be decreased. the adsorption treatment by activated carbon made a little difference in primary parameters of huangjiu, but obviously changed the contents of flavor substances. this method can be used as a contingency measure of reducing high levels of ec in huangjiu.
keywords： activated carbon adsorption huangjiu ethyl carbamate
论文图表：
引用
导出参考文献
no.****
动态公开评议
共计0人参与
勘误表
活性炭吸附减除黄酒中的氨基甲酸乙酯
评论
全部评论