Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/40352
Title: Controlled release of antifungal volatiles of thyme essential oil from ?-cyclodextrin capsules
Author: Pisarchik, A.N.
Jaimes-Reategui, R.
Issue Date: 2009
Abstract: We study how the basins of attraction of coexisting states can be controlled by either harmonic modulation or small noise applied to the pump parameter in a multistable erbium-doped fiber laser. The results of numerical simulations using the three-level laser model display good agreement with previously reported experimental studies on attractor annihilation by periodic modulation. In the laser with stochastic modulation, the attraction basins' volumes have a noise-dependent probabilistic character displaying some resonances for each of the coexisting attractors. " 2009 Elsevier B.V. All rights reserved.",,,,,,"10.1016/j.physleta.2009.10.061",,,"http://hdl.handle.net/20.500.12104/40352","http://www.scopus.com/inward/record.url?eid=2-s2.0-71849106503&partnerID=40&md5=a0d388f9f42fda4f834279daad221a5c",,,,,,"2",,"Physics Letters, Section A: General, Atomic and Solid State Physics",,"228
234",,"374",,"Scopus",,,,,,,,,,,,"Control of basins of attraction in a multistable fiber laser",,"Article" "42140","123456789/35008",,"del Toro-Sánchez, C.L., Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Linda Vista 47820 Ocotlán, Jalisco, Mexico; Ayala-Zavala, J.F., Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera a la Victoria km.0.6, Apartado Po 1735, 83000 Hermosillo, Sonora, Mexico; Machi, L., DIPM, Universidad de Sonora, Apdo. Postal 130, Hermosillo, Sonora, Mexico; Santacruz, H., DIPM, Universidad de Sonora, Apdo. Postal 130, Hermosillo, Sonora, Mexico; Villegas-Ochoa, M.A., Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera a la Victoria km.0.6, Apartado Po 1735, 83000 Hermosillo, Sonora, Mexico; Alvarez-Parrilla, E., Departamento de Ciencias Básicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez (UACJ), Anillo Envolvente del PRONAF y Estocolmo s/n, CP 32310 Ciudad Juárez, Chihuahua, Mexico; González-Aguilar, G.A., Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera a la Victoria km.0.6, Apartado Po 1735, 83000 Hermosillo, Sonora, Mexico",,"del Toro-Sanchez, C.L.
Ayala-Zavala, J.F.
Machi, L.
Santacruz, H.
Villegas-Ochoa, M.A.
Alvarez-Parrilla, E.
Gonzalez-Aguilar, G.A.",,"2010",,"Thyme essential oil (TO) is a good antimicrobial agent, however, its high volatility and reactivity limits its application as food preservative. ?-cyclodextrin (?-CD) is able to encapsulate organic molecules, forming host-guest complexes with hydrophobic and volatile molecules such as TO constituents, controlling volatility and reactivity. In addition, controlled released of the ?-CD trapped compounds could be possible by exposing the capsules to high relative humidity (RH). With this in mind, the controlled release of antifungal volatiles throughout exposure of TO:?-CD capsules to high relative humidity was studied. Thymol (TOL) was the major constituent of TO, detected by gas chromatography before and after encapsulation. Capsules of the 8:92 ratio (TO:?-CD) showed the highest TOL content. Hydrogen bonds and hydrophobic interactions were detected between the oil constituent and ?-CD by IR and 1H NMR spectroscopy. During moisture sorption, the TO capsules showed a lower water uptake compared with free ?-CD. Similar behavior was observed during water desorption. In all cases, a hysteresis process was observed when comparing sorption and desorption isotherms. At high RH, TOL is displaced and almost 76% is released to the headspace. The growth of Alternaria alternata was inhibited significantly by the addition and exposure to TO:?-CD as measured by both the agar dilution and the headspace method, respectively. Therefore, the encapsulation of antifungal volatile compounds as TO in ?-CD, could be an alternative to control the release of natural antimicrobials that can be of interest to the agricultural area. " Springer Science+Business Media B.V. 2010.
URI: http://hdl.handle.net/20.500.12104/40361
http://www.scopus.com/inward/record.url?eid=2-s2.0-77952876366&partnerID=40&md5=3d69ee6798ba797895e9989050de6e91
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