Antimicrobial Activity and Chemical Constituents of Essential Oils from the Leaf and Wood of <i>Taxus chinensis</i> (Rehder &amp; E.H. Wilson) Rehder (Taxaceae) from Vietnam

Hương, Lê Thị; Thương, Nguyễn Thị; Chac, Le D.; Đài, Đỗ Ngọc; Ogunwande, Isiaka A.

doi:10.1080/22311866.2020.1749128

Cited by 7 publications

(10 citation statements)

References 22 publications

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“…The leaf oil of T. chinensis and the flower oil of H. suaveolens showed similar MIC (64.0 g/mL) towards Bacillus cereus ATCC 14579, but lesser than the activity of pseudo-stem oil of Z. zerumbet with MIC of 50.0 µg/mL [4]. The investigated oil samples displayed lesser activity towards strains of Staphylococcus when compared with wood oil of T. chinensis [7] and the rhizome oils of A. globosa and A. tonkinensis [8]. The oils of H. suaveolens were more potent towards C. albicans ATCC10231 than the other mentioned essential oils.…”

Section: Antimicrobial Activity Of the Oilmentioning

confidence: 85%

“…The oils of H. suaveolens were more potent towards C. albicans ATCC10231 than the other mentioned essential oils. However, essential oils from the rhizome A. rubidium [4], the wood of T. chinensis [7] as well the rhizomes of A. globosa and A. tonkinensis [8] were more effective against Escherichia coli (ATCC 25922) when compared with H. suaveolens which showed no activity. In addition, the pseudo-stem oil of Z. castaneum [9] was also more potent towards P. aeruginosa ATCC 25923 than the oils of H. suaveolens.…”

Section: Antimicrobial Activity Of the Oilmentioning

confidence: 96%

“…The identity of the mass fragmentation patterns of each compound was checked and compared with known essential oil composition [30]. Moreover, the fragmentation patterns were also compared with literature data as described in previous studies [4][5][6][7][8].…”

Section: Chemical Analysis Of Essential Oilsmentioning

confidence: 99%

“…For example, in Vietnam essential oils from the rhizome oil of Amomum rubidium Lamxay & N. S. Lý exhibited antimicrobial activity against Escherichia coli (ATCC 25922) and Fusarium oxysporum (ATCC 48112) with MIC of 50 g/mL [4]. The antimicrobial activity of essential oils from the leaf [5] and rhizome [6] of Zingiber zerumbet (L.), Smith, the leaf and wood of Taxus chinensis (Rehder & EH Wilson) Rehder [7], the rhizomes of Alpinia tonkinensis Gagnep and Alpinia globosa Hour [8] and the pseudo-stem of Zingiber castaneum…”

Section: Introductionmentioning

confidence: 99%

“…Although the chemical constituents of H. Suaveolens grown in Vietnam were previously reported, there is no information about the antimicrobial of H. suaveolens, analyzed from Vietnam. As part of our on-going research aimed at the identification of the chemical constituents and biological activities of essential oils from plants grown in Vietnam [4][5][6][7][8] aimed at sourcing for potentials chemicals for control of diseases, we obtained essential oils from leaf and flowers of H. suaveolens, analysed the compounds present therein and examined the antimicrobial activity.…”

Section: Introductionmentioning

confidence: 99%

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Chemical Compostions of Essential Oils and Antimicrobial Activity of Hyptis suaveolens (L.) Poit. (Lamiaceae) from Vietnam

Chung

Hương

Đài

et al. 2020

EJMP

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Aims: This present study described the chemical constituents and antimicrobial activity of essential oils hydrodistiled from the leaves and flowers of Hyptis suaveolens (L.) Poit. Study Design: This research was designed to accommodate different stages such as collection of authentic sample of Hyptis suaveolens, obtain essential oil by hydrodistillation, chemical analysis of the oil samples by gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS) and screening of the essential oils for antimicrobial activity. Place and Duration of Study: School of Natural Science, Vinh University, Vinh City, Nghệ An Province, Vietnam, between August and December 2018. Methodology: The leaves and flowers of H. suaveolens used for this study were gotten from Đồng Văn Commune, Pù Hoạt Nature Reserve, Vietnam. The collection was done in December 2018. Essential oils were distilled off using hydrodistillation method according to established procedure. The determination of antimicrobial efficacy of essential oils of H. suaveolens will be achieved by the method of microdilution broth susceptibility assay. The minimum inhibitory concentration (MIC) and IC50 were evaluated accordingly. Results: The major compounds in the oil were b-caryophyllene (31.1% and 33.7%), caryophyllene oxide (17.6% and 3.9%), phytol (9.9% and 2.7%) and a-humulene (6.7% and 6.6%), respectively. The leaf oil displayed strong antimicrobial activity against Enterococcus faecalis ATCC299212, Bacillus cereus ATCC14579 and Candida albicans ATCC10231 with minimum inhibitory concentrations (MIC) of 16.0, 32.0 and 16.0 µg/mL respectively, while the IC50 values were 5.78, 9.35 and 6.78 µg/mL, respectively. The flower oil showed activity towards the same organisms with MIC values of 64.0, 64.0 and 16.0 µg/mL, respectively; with IC50 values of 20.45, 26.78 and 6.78 µg/mL, respectively. Both essential oils exhibited moderate activity towards Staphylococcus aureus ATCC25923 with MIC of 256.0 µg/mL. Conclusion: The results are indication of the potential of H. suaveolens essential oils as source of antimicrobial agents.

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Section: Antimicrobial Activity Of the Oilmentioning

confidence: 85%