Chemical constituents and biological activities of essential oil from Mentha longifolia: effects of different extraction methods

Autor: Xiaohui Bai, Aoken Aimila, Nurbolat Aidarhan, Xiaomei Duan, Maitinuer Maiwulanjiang
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: International Journal of Food Properties, Vol 23, Iss 1, Pp 1951-1960 (2020)
Druh dokumentu: article
ISSN: 1094-2912
1532-2386
10942912
DOI: 10.1080/10942912.2020.1833035
Popis: Mentha longifolia . is a perennial herb of Mentha in Labiatae. Considering the biological activities of Mentha longifolia essential oils, this work was planned to study the yields, relative percentage content and semi-quantitative change of chemical constituents as well as the biological activities of essential oils extracted by different extraction methods. Steam-distillation (SD), lipophilic solvents (n-hexane) extraction (LSE) and supercritical CO2 fluid extraction (SC-CO2) were employed to produce essential oils from Mentha longifolia. The essential oil obtained from LSE (1.21 ± 0.06%, w/w) showed the highest yield. A total of 39 compounds were identified by gas chromatography/flame ionization detector (GC-FID) and gas chromatography/mass spectrometry (GC-MS). The major compounds in SD and LSE were carvone, limonene, trans-caryophyllene and α-Terpineol, the major compounds in SC-CO2 were carvone, trans-caryophyllene, trans-β-Farnesene and Germacrene D. All essential oils showed varying degrees of antioxidant and anti-COX-2 activity. The IC50 ranging from (0.69 ± 0.01 ~ 15.61 ± 0.16 mg/mL) for DPPH and (0.16 ± 0.001 ~ 2.19 ± 0.11 mg/mL) for ABTS, SC-CO2 produced essential oil showed the highest scavenging activity both on DPPH and ABTS. Meanwhile, all the EOs showed the strong inhibition activity on COX-2, the EO obtained by SC-CO2 also showed the highest capacity to inhibit COX-2.
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