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Valls A, Castillo A, Porcar R, Hietala S, Altava B, Garcı A-Verdugo E, Luis SV. Urea-Based Low-Molecular-Weight Pseudopeptidic Organogelators for the Encapsulation and Slow Release of ( R)-Limonene. J Agric Food Chem 2020; 68:7051-7061. [PMID: 32511911 DOI: 10.1021/acs.jafc.0c01184] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Low-molecular-weight compounds containing alkylurea fragments attached to the amino end of different miminalistic pseudopeptidic structures have been shown to be excellent organogelators in a variety of organic solvents and liquid organic compounds of different nature. The formation of gels in this work is defined through rheological measurements for those cases where G' > G''. Both the topology and the symmetry of the corresponding urea compounds play a role in defining their organogelator behavior. This can also be tuned by the presence of additional supramolecular guests, as is the case for suberic acid. These compounds also achieve the gelation of relevant active substances such as terpene natural oils and complex mixtures of flavors and fragrances. This provides a simple and mass-efficient supramolecular system for the quantitative encapsulation of active substances, without the need for any additional solvent or complex processes, and their consequent controlled release.
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Affiliation(s)
- Adriana Valls
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
| | - Adrián Castillo
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
| | - Raúl Porcar
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
| | - Sami Hietala
- Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Belén Altava
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
| | - Eduardo Garcı A-Verdugo
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
| | - Santiago V Luis
- Department of Inorganic and Organic Chemistry, ESTCE, Universitat Jaume I, Avda. Sos Baynat, s/n, 12071, Castellón, Spain
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