摘要
【目的】了解单体香料加热条件下的共释放特性及相互间的作用关系。【方法】以薄荷醇、香兰素和甲基环戊烯醇酮为研究对象,基于热重实验和Coats-Redfern(CR)动力学分析方法,研究3种单体间的两两混合物的热释放特性和动力学行为。【结果】(1)3种固态单体香料在程序升温时经历升华或融化蒸发过程,微分热重曲线中均表现出单一失重峰,且释放温度均低于250℃;(2)热释放动力学分析表明3种单体香料的热释放活化能为135.67~166.01 kJ/mol,指前因子为3.94×10^(15)~9.29×10^(15)min^(-1);(3)单体香料两两混合后,不同香料间的相互作用类型和强度存在差异,BX样品中的薄荷醇和香兰素间存在较强的促进作用,BJ样品中薄荷醇和甲基环戊烯醇酮在温度高于170℃时促进作用急剧增加并在后续温度下持续保持较高水平的相互促进作用,XJ样品中单体香料间的相互作用类型与温度范围有关;(4)3种混合香料的热释放过程活化能均较对应的单体香料活化能低,热释放反应发生所需的能量降低;(5)热释放产物监测发现混合香料加热条件下香料主要通过蒸发作用以原型态转移至气溶胶中。
To understand the co-release characteristics and interaction relationships of monomer fragrances under heating conditions.[Methods]Menthol,vanillin,and methyl cyclopentenolone were selected as research objects,based on thermogravimetric experiments and Coats-Redfern(CR)kinetic analysis method,the thermal release characteristics and kinetic behaviors of binary mixtures of the three monomers were studied.[Results](1)The three solid-state monomer fragrances undergo sublimation or melting evaporation during programed heating,showing a single weight loss peak in the differential thermogravimetric curve,with release temperatures below 250℃;(2)Thermogravimetric analysis showed that the activation energies of thermal release for the three monomer fragrances were 135.67-166.01 kJ/mol,and the pre-exponential factors were 3.94×10^(15)-9.29×10^(15)min^(-1);(3)After mixing two monomer fragrances,different types and intensities of interactions were observed,with a strong promoting effect between menthol and vanillin in the BX sample,a significant increase in promoting effect between menthol and methyl cyclopentenolone at temperatures above 170℃in the BJ sample,and different interaction types in the XJ sample depending on the temperature range;(4)The activation energies of thermal release for the mixed fragrances were lower than those of the corresponding individual fragrances,indicating a reduced energy requirement for thermal release reactions;(5)Monitoring of thermal release products revealed that under heating conditions,the fragrances mainly transferred to aerosols in their original form through evaporation.
作者
何峰
田乾华
梁淼
潘文亮
王翰书
王蕊
张逸寒
李瑞丽
张峻松
HE Feng;TIAN Qianhua;LIANG Miao;PAN Wenliang;WANG Hanshu;WANG Rui;ZHANG Yihan;LI Ruili;ZHANG Junsong(Technology Center,China Tobacco Hebei Industrial Co.,Ltd.,Shijiazhuang 050051,China;College of Tobacco Science and Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China)
出处
《中国烟草学报》
CAS
CSCD
北大核心
2024年第5期1-8,共8页
Acta Tabacaria Sinica
基金
河北中烟工业有限责任公司重点项目(HBZY2024A039)。
关键词
单体香料
热重法
共热释放
互作特性
动力学
monomer fragrances
thermogravimetric analysis
co-release
interaction property
kinetics
