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Alaize de Martins Federal University of the Rio Grande do Norte Pharmacy Department Brazil

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A. Craveiro Federal University of the Ceará PADETEC Brazil

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M. Machado Federal University of the Ceará PADETEC Brazil

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Fernanda Raffin Federal University of the Rio Grande do Norte Pharmacy Department Brazil

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T. Moura Federal University of the Rio Grande do Norte Pharmacy Department Brazil

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Cs. Novák Hungarian Academy of Sciences, Budapest University of Technology and Economics Research Group of Technical Analytical Chemistry Budapest Hungary 1111 Szt. Gellért tér 4

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Zsuzsanna Éhen Budapest University of Technology and Economics Institute of General and Analytical Chemistry Budapest Hungary 1111 Szt. Gellért tér 4

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Abstract  

Inclusion complex between the essential oil of Mentha x villosa Hudson and β-cyclodextrin, with a 1:9 mass/mass oil–β-cyclodextrin ratio was prepared by co-precipitation and kneading methods in a hydroethanolic medium. The GC/MS analysis showed a total volatile content of 99.5% in the Mentha x villosa oil. The characterization of the complex involved the analysis of the original essential oil, the surface and the total extracted oils. Among 28 detected compounds in the original essential oil, 13 are monoterpenes and 10 sesquiterpenes, furthermore, piperitenone-oxide is the major component (35.4%). 12 compounds were totally and 11 partially complexed, 3 have been adsorbed only on the surface of the β-CD and 2 have not been detected neither in the surface oil nor in the complexed oil. A 13.6% encapsulation efficiency was observed, while the total oil and volatiles retention was 15 and 77%, respectively. Non-parametric statistic analysis of the data showed that the profile of the volatiles were not significantly different comparing the original oil and the complexed oil (p>0.04). The results of thermogravimetry-mass spectrometry and XRD analysis have proven the inclusion complex formation between the essential oil and cyclodextrin.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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