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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...

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Autores principales: Wu, Hong, Li, Jilie, Jia, Yuan, Xiao, Zhihong, Li, Peiwang, Xie, Yixian, Zhang, Aihua, Liu, Rukuan, Ren, Zewen, Zhao, Mengrui, Zeng, Chaozhen, Li, Changzhu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2019
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.
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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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