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Chemical diversity, antioxidant and antimicrobial activities of the essential oils from Indian populations of Hedychium coronarium Koen

Ray, Asit, Jena, Sudipta, Dash, Biswabhusan, Kar, Basudeba, Halder, Tarun, Chatterjee, Tuhin, Ghosh, Biswajit, Panda, Pratap Chandra, Nayak, Sanghamitra, Mahapatra, Namita
Industrial crops and products 2018 v.112 pp. 353-362
2,2-diphenyl-1-picrylhydrazyl, Candida albicans, Fusarium oxysporum, Hedychium coronarium, alpha-pinene, antimicrobial properties, antioxidant activity, antioxidants, beta-pinene, chemical composition, chemotypes, cineole, essential oils, flame ionization, food industry, gamma-terpinene, gas chromatography-mass spectrometry, hydrodistillation, inhibitory concentration 50, linalool, p-cymene, pharmaceutical industry, principal component analysis, provenance, rhizomes, India
Hedychium coronarium Koen. is a perennial herb of family Zingiberaceae that is valued for its high quality essential oil. In the present study, the variability in chemical constituents, antioxidant and antimicrobial property of essential oils of Hedychium coronarium collected from different locations of Eastern India were evaluated. Essential oil hydrodistilled from rhizome parts of H. coronarium varied from 0.05 to 0.47% (v/w). A total of 44 components accounting for 86.18–99.94% of H. coronarium essential oil were identified by gas chromatography flame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC–MS). The major components are β-pinene (11.07–42.74%), eucalyptol (11.48–40.59%), linalool (1.56–45.11%), coronarin-E (1.01–39.57%), α-pinene (3.80–16.60%), p-cymene (1.05–8.89%), γ-terpinene (1.73–5.82%) and 10-epi-γ-eudesmol (1.11–4.86%). According to agglomerative hierarchical clustering (AHC) and principal component analysis (PCA), the essential oils of H. coronarium populations were grouped into four different chemotypes. They were (I) eucalyptol, (II) linalool, (III) coronarin-E, and (IV) β-pinene. Furthermore, essential oils exhibited considerable levels of reducing power activity (IC50, 0.39–1.66 mg/ml), 2,2-diphenyl-1-picrylhydrazyl (DPPH) (IC50, 0.57–2.19 mg/ml), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) (IC50, 0.12–0.67 mg/ml) radical-scavenging activities. Results of antimicrobial activity concluded that essential oil has good inhibitory activity against Candida albicans and Fusarium oxysporum. The results showed that geographic origin greatly influenced the chemical composition of essential oil of H. coronarium and their associated bioactivities. Four chemotypes identified in the present study could be developed as promising bioresource in perfumery, food and pharmaceutical industry.