聚丙烯酸酯支撑的香料前体的合成与热解

IF 3.1 2区 化学 Q2 CHEMISTRY, ANALYTICAL
Chen Zhu , Wei-Po Jiang , Chun-Hua Liu , Liangyuan Jia , Zeng-Yang He , Jin Zhang , Peng Zou , Yuan-Yuan Zhu
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引用次数: 0

摘要

在本文中,我们介绍了一种旨在合成香精前体的新型 "聚合策略",其重点是提高香精前体的热稳定性和释放性能。薄荷醇、甲基环戊烯酮和乙基麦芽酚这三种挥发性香料与丙烯酰氯反应生成相应的乙烯基单体。这些单体经过自由基聚合形成均聚物(P1-P3)。为了提高在醇类溶剂中的溶解度,可引入亲水性低聚乙二醇单体,与含香料的单体共聚,形成共聚物(P4-P6)。这些聚合物的一个重要优点是热稳定性明显增强,与小分子香精相比,热稳定性提高了约 100 至 200°C。此外,通过使用固定床反应器结合单一光离子化质谱法(FBR-SPIMS)和热解-气相色谱-质谱法(Py-GC-MS)对热解产生的挥发物进行在线分析,我们的方法能够在加热时有效释放目标香料。这项工作是提高挥发性香料热稳定性和提高其释放温度的一种实用创新方法,有望在高温食品加工和烟草行业得到应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Synthesis and pyrolysis of polyacrylate-supported flavor precursors

Synthesis and pyrolysis of polyacrylate-supported flavor precursors

Herein we present a novel ‘polymerization strategy’ aimed at synthesizing flavor precursors, with a focus on enhancing their thermal stability and release properties. Three volatile flavors, menthol, methyl cyclopentenolone, and ethyl maltol, are reacted with acryloyl chloride to produce corresponding vinyl monomers. These monomers undergo radical polymerization to form homopolymers (P1P3). To improve solubility in alcohol solvents, a hydrophilic oligoethylene glycol monomer is introduced, copolymerized with the flavor containing monomers, resulting in copolymers (P4P6). An important advantage of these polymers lies in their significantly enhanced thermal stability, exhibiting an increase of approximately 100 to 200 °°C compared to small molecular flavors. Furthermore, our methodology enables efficient release of the target flavors upon heating, as evidenced by online analyses of volatiles from pyrolysis using fixed-bed reactor combined with single photoionization mass spectrometry (FBR-SPIMS) and pyrolysis-gas chromatography-mass spectrometry (Py-GC–MS). This work represents a practical and innovative approach to improving the thermal stability of volatile flavors and elevating their release temperature, offering promising applications in high-temperature food processing and tobacco industries.

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来源期刊
Thermochimica Acta
Thermochimica Acta 化学-分析化学
CiteScore
6.50
自引率
8.60%
发文量
210
审稿时长
40 days
期刊介绍: Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes
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