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Title
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Chemical composition and biological activities of essential oils and organic extracts from fresh and sun-dried Citrus limon peels
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Author
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Abstract
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| The present study deals with the characterization of essential oils extracted from both fresh and sun-dried lemon (citrus limon (L.) Burm.f) peels by hydrodistillation, followed by extraction with ether or ethyl acetate, yielding four essential oil samples. The extraction yield varied between 0.1 and 1.65%. The essential oils constituents were identified using GC/MS analysis; limonene was the major compound ranging between 3.75 and 76.78%. In addition, ethyl acetate and methanol extracts were prepared from sun-dried lemon peels, and characterized by HPLC-PDA-ESI-MS. Four flavanoneO-diglycosides (neoreiocitrin, neohespiridin, melitidin and naringin), three flavone di-C-glycosides(diosmetin-6,8-di-C-glycoside, apigenin-6,8-di-C-glycoside, di-C-glycosideflavone), two flavone O-diglycosides (vicenin 2, neodiosmin), three polymethoxyflavones (tangeretin, nobiletin, 5,6,7,4 '-tetramethoxyflavone), and two coumarins (scoparin, isomeranzin) were identified. Lemon peels ethyl acetate extract exhibits a powerful antioxidant activity (IC50 = 0.09 mu g/ mL) compared to those of vitamin E (IC50 = 0.017 mu g/ mL) and BHT (IC50 = 0.026 mu g/ mL). On the other hand, essential oils from fresh and sun-dried lemon peels as well as organic extracts exhibited interesting antimicrobial activities against Bacillus cereus, B. subtilis, Staphylococcus aureus (Gram(+)) and Salmonella enterica, Escherichia coli, Klebsiella pneumoniae (Gram(-)). Lemon peels would be used in the agro-food industry as alternative to the undesirable chemical additives. |
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Language
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English
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Source (journal)
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Chemistry Africa
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Publication
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2021
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ISSN
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2522-5766
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DOI
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10.1007/S42250-020-00212-W
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Volume/pages
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4
:1
(2021)
, p. 51-62
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ISI
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000705272400005
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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