Cyclodextrin polymers in combination with water and deep eutectic solvent for the retention of Eucalyptus citriodora essential oil

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of Inclusion Phenomena and Macrocyclic Chemistry Pub Date : 2022-09-26 DOI:10.1007/s10847-022-01161-2

Lamia Nakhle, Miriana Kfoury, Isabelle Mallard, Hélène Greige-Gerges, David Landy

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引用次数: 1

Abstract

Eucalyptus citriodora is one of the most widely used essential oils (EOs) because of its various antimicrobial, antioxidant and anti-inflammatory activities. However, its limited aqueous solubility restricts its use. The aim of this study was to develop supramolecular formulations able to retain E. citriodora EO in solution. For this purpose, new cyclodextrin (CD) polymers were synthesized and characterized using gel permeation chromatography, FTIR and NMR spectroscopies. Their retention ability toward E. citriodora in non-conventional green media (deep eutectic solvent (DES):water mixture), more precisely choline chloride:urea DES:water (70:30 wt%), was evaluated and compared to the corresponding native CD [β-cyclodextrin (β-CD)] or CD derivatives [hydroxypropylated-β-cyclodextrin (HP-β-CD) and low methylated-β-cyclodextrin (CRYSMEB)] using static headspace-gas chromatography (SH-GC). All the studied formulations showed a great capacity to retain and reduce the volatility of E. citriodora. The various polymers showed divergent retention efficiencies.

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环糊精聚合物与水和深共晶溶剂结合用于保留桉树精油

桉树精油具有多种抗菌、抗氧化和抗炎活性，是应用最广泛的精油之一。然而，其有限的水溶性限制了其使用。本研究的目的是开发能够在溶液中保留柠檬精油的超分子配方。为此，合成了新的环糊精(CD)聚合物，并利用凝胶渗透色谱、红外光谱和核磁共振光谱对其进行了表征。利用静态顶空-气相色谱法(SH-GC)评价了它们在非常规绿色介质(深共晶溶剂(DES):水混合物)，更准确地说是氯化胆碱:尿素DES:水(70:30 wt%)中对柠檬臭的保留能力，并与相应的天然CD [β-环糊精(β-CD)]或CD衍生物[羟丙基-β-环糊精(HP-β-CD)和低甲基化-β-环糊精(crymeb)]进行了比较。所研究的配方均具有较好的保留和降低柠檬挥发性的能力。不同的聚合物表现出不同的保留效率。

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来源期刊

Journal of Inclusion Phenomena and Macrocyclic Chemistry Agricultural and Biological Sciences-Food Science

CiteScore

4.10

自引率

8.70%

发文量

期刊介绍： The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites. The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.