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Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities
To improve essential oil quality, especially to reserve the thermal instability of compounds, supercritical CO(2) extraction (SFE) was applied to recover essential oil from Cymbopogon citronella leaves. A response surface methodology was applied to optimize the extraction process. The highest essent...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6334621/ https://www.ncbi.nlm.nih.gov/pubmed/30719374 http://dx.doi.org/10.1155/2019/8192439 |
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author | Wu, Hong Li, Jilie Jia, Yuan Xiao, Zhihong Li, Peiwang Xie, Yixian Zhang, Aihua Liu, Rukuan Ren, Zewen Zhao, Mengrui Zeng, Chaozhen Li, Changzhu |
author_facet | Wu, Hong Li, Jilie Jia, Yuan Xiao, Zhihong Li, Peiwang Xie, Yixian Zhang, Aihua Liu, Rukuan Ren, Zewen Zhao, Mengrui Zeng, Chaozhen Li, Changzhu |
author_sort | Wu, Hong |
collection | PubMed |
description | To improve essential oil quality, especially to reserve the thermal instability of compounds, supercritical CO(2) extraction (SFE) was applied to recover essential oil from Cymbopogon citronella leaves. A response surface methodology was applied to optimize the extraction process. The highest essential oil yield was predicted at extraction time 120 min, extraction pressure 25 MPa, extraction temperature 35°C, and CO(2) flow 18 L/h for the SFE processing. Under these experimental conditions, the mean essential oil yield is 4.40%. In addition, the chemical compositions of SFE were compared with those obtained by hydrodistillation extraction (HD). There were 41 compounds obtained of SFE, while 35 compounds of HD. Alcohols and aldehydes were the main compositions in the essential oils. Furthermore, the antioxidant activities and antimicrobial of essential oils obtained by HD and the evaluated condition of SFE were compared. Results showed that the antioxidant activities of SFE oil are better than those of HD. Minimum inhibitory concentrations (MICs) were determined by the microdilution method. Essential oil obtained from SFE and HD exhibited a significant antimicrobial activity against all tested microorganisms. It is confirmed that the SFE method can be an alternative processing method to extract essential oils from Cymbopogon citronella leaves. |
format | Online Article Text |
id | pubmed-6334621 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-63346212019-02-04 Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities Wu, Hong Li, Jilie Jia, Yuan Xiao, Zhihong Li, Peiwang Xie, Yixian Zhang, Aihua Liu, Rukuan Ren, Zewen Zhao, Mengrui Zeng, Chaozhen Li, Changzhu J Anal Methods Chem Research Article To improve essential oil quality, especially to reserve the thermal instability of compounds, supercritical CO(2) extraction (SFE) was applied to recover essential oil from Cymbopogon citronella leaves. A response surface methodology was applied to optimize the extraction process. The highest essential oil yield was predicted at extraction time 120 min, extraction pressure 25 MPa, extraction temperature 35°C, and CO(2) flow 18 L/h for the SFE processing. Under these experimental conditions, the mean essential oil yield is 4.40%. In addition, the chemical compositions of SFE were compared with those obtained by hydrodistillation extraction (HD). There were 41 compounds obtained of SFE, while 35 compounds of HD. Alcohols and aldehydes were the main compositions in the essential oils. Furthermore, the antioxidant activities and antimicrobial of essential oils obtained by HD and the evaluated condition of SFE were compared. Results showed that the antioxidant activities of SFE oil are better than those of HD. Minimum inhibitory concentrations (MICs) were determined by the microdilution method. Essential oil obtained from SFE and HD exhibited a significant antimicrobial activity against all tested microorganisms. It is confirmed that the SFE method can be an alternative processing method to extract essential oils from Cymbopogon citronella leaves. Hindawi 2019-01-02 /pmc/articles/PMC6334621/ /pubmed/30719374 http://dx.doi.org/10.1155/2019/8192439 Text en Copyright © 2019 Hong Wu et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Wu, Hong Li, Jilie Jia, Yuan Xiao, Zhihong Li, Peiwang Xie, Yixian Zhang, Aihua Liu, Rukuan Ren, Zewen Zhao, Mengrui Zeng, Chaozhen Li, Changzhu Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title | Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title_full | Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title_fullStr | Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title_full_unstemmed | Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title_short | Essential Oil Extracted from Cymbopogon citronella Leaves by Supercritical Carbon Dioxide: Antioxidant and Antimicrobial Activities |
title_sort | essential oil extracted from cymbopogon citronella leaves by supercritical carbon dioxide: antioxidant and antimicrobial activities |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6334621/ https://www.ncbi.nlm.nih.gov/pubmed/30719374 http://dx.doi.org/10.1155/2019/8192439 |
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