Publication: Encapsulation of citral isomers in extracted lemongrass oil with cyclodextrins: Molecular modeling and physicochemical characterizations
Issued Date
2011-12-01
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ISSN
13476947
09168451
09168451
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2-s2.0-84855254087
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Mahidol University
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SCOPUS
Bibliographic Citation
Bioscience, Biotechnology and Biochemistry. Vol.75, No.12 (2011), 2340-2345
Suggested Citation
Uracha Rungsardthong Ruktanonchai, Wanwisa Srinuanchai, Somsak Saesoo, Issara Sramala, Satit Puttipipatkhachorn, Apinan Soottitantawat Encapsulation of citral isomers in extracted lemongrass oil with cyclodextrins: Molecular modeling and physicochemical characterizations. Bioscience, Biotechnology and Biochemistry. Vol.75, No.12 (2011), 2340-2345. doi:10.1271/bbb.110523 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/11421
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Title
Encapsulation of citral isomers in extracted lemongrass oil with cyclodextrins: Molecular modeling and physicochemical characterizations
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Abstract
The complexation between two isomers of citral in lemongrass oil and varying types of cyclodextrins (CDs), α-CD, β-CD, and HP-β-CD, were studied by molecular modeling and physicochemical characterization. The results obtained revealed that the most favorable complex formation governing between citrals in lemongrass oil and CDs were found at a 1:2 mole ratio for all CDs. Complex formation between E-citral and CD was more favorable than between Z-citral and CD. The thermal stability of the inclusion complex was observed compared to the citral in the lemongrass oil. The release time course of citral from the inclusion complex was the diffusion control, and it correlated well with Avrami's equation. The release rate constants of the E- and Z-citral inclusion complexes at 50 °C, 50% RH were observed at 1:32 × 10 -2 h -1 and 1:43 × 10 -2 h -1 respectively.