Ionic liquid ultrasound-assisted hydrodistillation high efficiency extraction of turmeric (Curcuma longa L.) essential oil and study of its extraction mechanism

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2024-11-15 DOI:10.1016/j.seppur.2024.130504

Yu Chen, Huayang Yu, Yaxuan Liu, Yuxin Guo, Xiaoli Wang, Yang Wang, Chuanrun Li, Yichun Dong, Yanyan Guo

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Abstract

The optimal conditions for extracting turmeric essential oil (CEO) using ionic liquid ultrasound-assisted hydrodistillation (IL-U-HD) were determined in this study. In this context, the CEO extraction yield reached 6.88 %, significantly higher than that of hydrodistillation (HD), ultrasound-assisted hydrodistillation (U-HD), and ionic liquid-assisted hydrodistillation (IL-HD). The extraction kinetics, GC–MS compositional analysis, cell viability, and antioxidant properties of the extracted CEO indicate enhanced cell viability and antioxidant properties when extracted by IL-U-HD. Additionally, the compositional fractions exhibited an increase while improving extraction efficiency by 22 % compared to HD. To explore the efficient extraction mechanism at the molecular level, cellobiose and ar-turmerone were established as model molecules representing the primary constituents of the plant cell wall and CEO, respectively. Their interaction with ILs was investigated using quantum chemical calculations (QC) and wavefunction analysis. The results revealed that [EMIM][Tf₂N] formed hydrogen bond (HB) interactions with cellobiose and exhibited strong van der Waals (vdW) interactions as well as HB interactions with ar-turmerone, leading to a significant enhancement in CEO extraction.

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离子液体超声辅助水蒸馏法高效萃取姜黄精油及其萃取机理研究

本研究确定了使用离子液体超声辅助水蒸馏（IL-U-HD）萃取姜黄精油（CEO）的最佳条件。在此条件下，姜黄精油的萃取率达到 6.88%，明显高于水蒸馏法（HD）、超声波辅助水蒸馏法（U-HD）和离子液体辅助水蒸馏法（IL-HD）。萃取动力学、气相色谱-质谱（GC-MS）成分分析、细胞存活率和萃取 CEO 的抗氧化特性表明，采用 IL-U-HD 萃取时，细胞存活率和抗氧化特性均有所提高。此外，与 HD 相比，萃取效率提高 22%的同时，成分馏分也有所增加。为了在分子水平上探索高效萃取机制，将纤维生物糖和 ar-turmerone 确定为模型分子，分别代表植物细胞壁和 CEO 的主要成分。利用量子化学计算（QC）和波函数分析研究了它们与 IL 的相互作用。结果表明，[EMIM][Tf2N] 与纤维生物糖形成氢键（HB）相互作用，与 ar-turmerone 表现出强烈的范德华（vdW）相互作用和氢键相互作用，从而显著提高了 CEO 的提取率。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.