Encapsulation of natural flavors in cyclodextrins: Free volume studies by PALS

M. F. Ferreira Marques, P. M. Gordo, S. D. Santos, R. F. Marques, A. Da Moreira Silva, Z. Kajcsos

Research output: Conference contribution

Abstract

Positron annihilation lifetime spectroscopy (PALS) is used to study the free-volume in β-cyclodextrin (CD) with the encapsulation of two different essential oils: garlic (Allium sativum) and marjoram (Origanum majorana). The data reveal the presence of a long lifetime component related to the o-Ps. It is observed that the addition of garlic (or marjoram) oil to β-CD results in a decrease of the o-Ps lifetime which was ascribed to a reduction of the free volume holes from 83.6 to 67.7 Å3 (79.1 to 72.6 Å3). Different mechanisms for the encapsulation of garlic and marjoram oils in β-CD are suggested by the PALS parameters.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages88-91
Number of pages4
Volume733
DOIs
Publication statusPublished - 2013
Event10th International Workshop on Positron and Positronium Chemistry, PPC-10 - Smolenice Castle, Slovakia
Duration: szept. 5 2011szept. 9 2011

Publication series

NameMaterials Science Forum
Volume733
ISSN (Print)02555476

Other

Other10th International Workshop on Positron and Positronium Chemistry, PPC-10
CountrySlovakia
CitySmolenice Castle
Period9/5/119/9/11

Fingerprint

Positron annihilation
Flavors
Cyclodextrins
Free volume
positron annihilation
Encapsulation
Spectroscopy
life (durability)
oils
spectroscopy
Essential oils
Volatile Oils
Oils

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Ferreira Marques, M. F., Gordo, P. M., Santos, S. D., Marques, R. F., Da Moreira Silva, A., & Kajcsos, Z. (2013). Encapsulation of natural flavors in cyclodextrins: Free volume studies by PALS. In Materials Science Forum (Vol. 733, pp. 88-91). (Materials Science Forum; Vol. 733). https://doi.org/10.4028/www.scientific.net/MSF.733.88

Encapsulation of natural flavors in cyclodextrins : Free volume studies by PALS. / Ferreira Marques, M. F.; Gordo, P. M.; Santos, S. D.; Marques, R. F.; Da Moreira Silva, A.; Kajcsos, Z.

Materials Science Forum. Vol. 733 2013. p. 88-91 (Materials Science Forum; Vol. 733).

Research output: Conference contribution

Ferreira Marques, MF, Gordo, PM, Santos, SD, Marques, RF, Da Moreira Silva, A & Kajcsos, Z 2013, Encapsulation of natural flavors in cyclodextrins: Free volume studies by PALS. in Materials Science Forum. vol. 733, Materials Science Forum, vol. 733, pp. 88-91, 10th International Workshop on Positron and Positronium Chemistry, PPC-10, Smolenice Castle, Slovakia, 9/5/11. https://doi.org/10.4028/www.scientific.net/MSF.733.88
Ferreira Marques MF, Gordo PM, Santos SD, Marques RF, Da Moreira Silva A, Kajcsos Z. Encapsulation of natural flavors in cyclodextrins: Free volume studies by PALS. In Materials Science Forum. Vol. 733. 2013. p. 88-91. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.733.88
Ferreira Marques, M. F. ; Gordo, P. M. ; Santos, S. D. ; Marques, R. F. ; Da Moreira Silva, A. ; Kajcsos, Z. / Encapsulation of natural flavors in cyclodextrins : Free volume studies by PALS. Materials Science Forum. Vol. 733 2013. pp. 88-91 (Materials Science Forum).
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