LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal.
Faculty of Technology Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia.
Biomolecules. 2023 Jul 14;13(7):1126. doi: 10.3390/biom13071126.
The aim of this work was to establish the potential of natural deep eutectic solvents (NADES) for the stabilization of aroma volatile organic compounds from a natural source. was used as a source of volatile components, as it is rich in terpenes of great commercial and biological importance, such as carvacrol, thymol, and thymoquinone, among others. Supercritical CO was used to extract the lipophilic fraction of , which was further directly dispersed in NADES. The stabilizing capacity of seven different NADES based on betaine and glycerol was analyzed. The stability of the components in NADES was monitored by analyzing the headspace profile during 6 months of storage at room temperature. The changes in the headspace profile over time were analyzed by using different statistical and chemometric tools and the Wilcoxon matched pair test. It was determined that alterations over time occurred such as degradation and oxidation, and they were the most prominent in the control. In addition, the indicator of decreased stability of the control was the formation of the new compounds that could compromise the quality of the product. In the stabilized NADES samples, the changes were significantly less prominent, indicating that the NADES had a stabilizing effect on the volatile compounds. According to Wilcoxon matched pair test, the most efficient stability was achieved by using betaine/ethylene glycol, glycerol/glucose, and betaine/sorbitol/water. Therefore, by applying two green solvents, a sustainable approach for obtaining pure and high-quality extracts with extended stability at room temperature was established.
本工作旨在研究天然深共晶溶剂(NADES)对天然源香气挥发性有机化合物的稳定性潜力。 被用作挥发性成分的来源,因为它富含具有重要商业和生物意义的萜烯,如香芹酚、百里酚和百里醌等。超临界 CO 用于提取 的脂溶性部分,然后直接将其分散在 NADES 中。分析了基于甜菜碱和甘油的七种不同 NADES 的稳定能力。通过分析 6 个月室温储存期间的顶空分布来监测 NADES 中成分的稳定性。通过使用不同的统计和化学计量学工具和 Wilcoxon 配对检验分析随时间变化的顶空分布。结果表明,随着时间的推移发生了一些变化,如降解和氧化,而在对照中最为明显。此外,控制稳定性降低的指标是形成可能影响产品质量的新化合物。在稳定的 NADES 样品中,变化明显不那么明显,表明 NADES 对挥发性化合物具有稳定作用。根据 Wilcoxon 配对检验,使用甜菜碱/乙二醇、甘油/葡萄糖和甜菜碱/山梨糖醇/水可以获得最有效的稳定性。因此,通过应用两种绿色溶剂,建立了一种可持续的方法,可在室温下获得具有更长稳定性的纯和高质量 的提取物。