Chemical composition, antibacterial and α-glucosidase inhibitory activities of the essential oils of Neolitsea coccinea (lauraceae)

• Main Authors: Ahmad, F. (Author), Ali, N.A.M (Author), Jani, N.A (Author), Sirat, H.M (Author), Zainal, M.H (Author)
• Format: Article
• Language: English
• Published: Natural Product Incorporation 2016
• Subjects: 1 epicubenol; alpha glucosidase; Antibacterial; antibacterial activity; Article; Bacillus subtilis; bicyclogermacrene; biochemical composition; controlled study; cyperotundone; delta cadinene; drug determination; enzyme activity; essential oil; gamma eudesmol; germacrene; globulol; hydrodistillation; IC50; Lauraceae; mass fragmentography; minimum inhibitory concentration; Neolitsea coccinea; nonhuman; phytochemistry; plant leaf; plant medicinal product; plant stem; selin 11 en 4 alpha ol; Staphylococcus aureus; Stone; unclassified drug; α-Glucosidase
• Online Access: View Fulltext in Publisher; View in Scopus
• ISBN: 1934578X (ISSN)
• ISSN: 1934578X (ISSN)
• DOI: 10.1177/1934578x1601101231

The chemical composition, antibacterial and α-glucosidase inhibitory activities of the essential oils obtained from hydrodistillation of the fresh stem and leaf of Neolitsea coccinea B. C. Stone are reported for the first time. GC and GC-MS analysis revealed the presence of 42 volatile compounds from the stem and leaf oils, accounting for 84.9% and 90.4%, respectively of the identified components. The principle compounds in the stem oil were 5-cadinene (21.2%), 1-epi-cubenol (11.3%) and cyperotundone (10.7%), while the main compounds in the leaf oil were selin-11-en-4-α-ol (26.8%), bicyclogermacrene (12.6%), γ-eudesmol (7.1%), germacrene D (6.1%) and globulol (5.9%). The leaf oil demonstrated moderate to weak antibacterial activity towards Bacillus subtilis and Staphylococcus aureus with MIC values of 250 μg/mL and 500 μg/mL, respectively, whereas the stem oil possessed weak antibacterial activity against B. subtilis with a MIC value of 500 μg/mL. The stem and leaf oils showed significant α-glucosidase inhibitory activity with IC50 values of 32.2 ± 0.8 μg/mL and 70.9 ± 1.1 μg/mL, respectively.