The glycerol/water mixture is an effective deep eutectic solvent for the extraction of bioactive components from food waste matrices

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-03-18 DOI:10.1016/j.molliq.2025.127416

Francesca Pompei , Elison Lepore , Alejandro Torregrosa-Chinillach , Francesco Catalini , Diego A. Alonso , Rafael Chinchilla , Serena Gabrielli , Cinzia Mannozzi , Sauro Vittori , Matteo Tiecco

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Abstract

Deep Eutectic Solvents (DESs) are a novel class of liquid systems that are increasing their relevance in the literature for their green and environmentally friendly features, for their catalytic properties and for their structural features. In this work, the mixture glycerol/water at 1/2.55 M ratio was demonstrated to be a DES thanks to the comparison of the experimental melting points with the theoretical melting curves. This DES was used as extracting agent on different food waste matrixes: onion, tomato and apple peels, spent coffee grounds and grape pomace. The results were compared with those obtained with water and with glycerol, showing a superior capability of the DES in the extractions, as well as superior antioxidant properties of the extracts. This promotes the use of this DES at the eutectic point and promotes a novel approach about the direct use of the extracts without further purification procedures considering the food grade of the DES components.

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深共晶溶剂（DES）是一类新型液体体系，由于其绿色环保特性、催化特性和结构特性，在文献中的相关性日益增加。在这项研究中，通过实验熔点与理论熔点曲线的比较，证明了甘油/水的混合物（1/2.55 M）是一种 DES。这种 DES 被用作不同食物垃圾基质的萃取剂：洋葱皮、番茄皮、苹果皮、废咖啡渣和葡萄渣。实验结果与用水和甘油萃取的结果进行了比较，结果表明 DES 的萃取能力更强，萃取物的抗氧化性也更出色。这促进了这种 DES 在共晶点的使用，并推广了一种新方法，即考虑到 DES 成分的食品级，无需进一步纯化程序即可直接使用提取物。

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.