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Chemical composition, antioxidant and bioactivities of essential oils from Melaleuca bracteata leaves

Author

Listed:
  • Lan Ying Wang

    (College of Plant Protection, Hainan University, Haikou, P.R.China)

  • Wen Cheng How

    (Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Haikou, P.R. China)

  • Tian An Shen

    (College of Plant Protection, Hainan University, Haikou, P.R.China)

  • Rong Di

    (Department of Plant Biology, Rutgers School of Environmental and Biological Sciences, The State University of New Jersey, New Jersey, USA)

  • Yanping Luo

    (College of Plant Protection, Hainan University, Haikou, P.R.China)

Abstract

Melaleuca bracteata possesses antioxidant, antibacterial, and herbicidal activities. However, the agricultural applications of M. bracteata have not been explored yet. The M. bracteata leaves were distilled, and the petroleum ether extract of the essential oils (PEEO) was analysed by GC-MS, where methyl eugenol was found to be the most abundant (66.68%). The total polyphenol content (TPC), the total flavonoids content (TFC) of the PEEO were 6.617 ± 0.535 mg gallic acid equivalents/g and 7.086 ± 0.452 mg rutin equivalents/g, respectively. The IC50 values of the DPPH, ABTS and Fe3+ were 4.180 ± 0.050 mg/ml, 5.400 ± 0.140 mg/ml, and 8.935 ± 0.067 mg/g, respectively. The EC50 value of the PEEO was 33.78 ± 2.35 μg/ml against the Pyricularia oryzae. The minimum inhibitory concentration and minimum bactericidal concentration values were 0.10 mg/ml and 0.45 mg/ml against Bacillus subtilis. The results indicate that M. bracteata PEEO possesses excellent antioxidant activities and bioactivities.

Suggested Citation

  • Lan Ying Wang & Wen Cheng How & Tian An Shen & Rong Di & Yanping Luo, 2020. "Chemical composition, antioxidant and bioactivities of essential oils from Melaleuca bracteata leaves," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 56(1), pages 18-29.
    • Handle: RePEc:caa:jnlpps:v:56:y:2020:i:1:id:38-2019-pps
    DOI: 10.17221/38/2019-PPS
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