Thermodynamic insights into the odour intensity of terpenols

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL

Journal of Thermal Analysis and Calorimetry Pub Date : 2025-02-20 DOI:10.1007/s10973-024-13819-9

Ruslan N. Nagrimanov, Aizat A. Samatov, Roman A. Babkin, Dmitrii N. Bolmatenkov, Rezeda L. Sibgatullina, Sergey P. Verevkin

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Abstract

Terpenols are flavourings that are frequently used in perfumery. Choosing the optimal perfume composition is no easy task, as the perception of fragrances is subjective and can vary greatly from person to person due to sensory and chemical differences in the human olfactory system. Thermodynamics can essentially contribute to the rational design of the perfume composition. The absolute vapour pressure as a fundamental thermodynamic property is directly related to the intensity of the odour. In this work, a set of reliable vapour pressures, enthalpies of vaporisation, enthalpies of sublimation and enthalpies of fusion for nine terpenols was evaluated with help of complementary measurements and empirical structure–property correlations and recommended for thermodynamic calculations for various processes involving the terpenols. The evaluated vapour pressures and the calculated activity coefficients of the terpenols in the standardised aqueous-ethanolic mixture were used to determine the odour indices that quantify the odour intensity.

Graphical abstract

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萜类化合物气味强度的热力学分析

萜烯醇是香料中经常使用的调味品。选择最佳的香水成分并不是一件容易的事，因为对香水的感知是主观的，而且由于人类嗅觉系统的感官和化学差异，人与人之间的差异很大。热力学对香水成分的合理设计具有重要的指导作用。作为基本热力学性质的绝对蒸气压与气味的强度直接相关。在这项工作中，九种萜烯醇的一组可靠的蒸汽压力、蒸发焓、升华焓和聚变焓在互补测量和经验结构-性质相关性的帮助下进行了评估，并推荐用于涉及萜烯醇的各种过程的热力学计算。通过测定标准水-乙醇混合物中萜类化合物的蒸汽压力和活度系数来确定量化气味强度的气味指数。图形抽象

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来源期刊

Journal of Thermal Analysis and Calorimetry 化学-分析化学

CiteScore

8.50

自引率

9.10%

发文量

577

审稿时长

3.8 months

期刊介绍： Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews. The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.