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J Herbmed Pharmacol. 2020;9(3): 223-231.
doi: 10.34172/jhp.2020.29
  Abstract View: 143
  PDF Download: 78

Original Article

Chemical compositions of essential oils of Amomum verum and Cinnamomum parthenoxylon and their in vitro biological properties

Janpen Tangjitjaroenkun 1* ORCID logo, Rungnapa Tangchitcharoenkhul 2 ORCID logo, Waraporn Yahayo 3 ORCID logo, Suangson Supabphol 4 ORCID logo, Ruengrit Sappapan 5 ORCID logo, Roongtawan Supabphol 6 ORCID logo

1 Department of Resources and Environment, Faculty of Science at Si Racha, Kasetsart University, Si Racha campus, Thailand
2 Graduate School, Suan Dusit University, Thailand
3 Multidisciplinary Laboratory, Faculty of Medicine, Srinakarinwirot University, Thailand
4 Faculty of Medicine, Chulalongkorn University, Thailand
5 Bangkok Lab & Cosmetic Co. Ltd., Thailand
6 Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Thailand
*Corresponding author: Janpen Tangjitjaroenkun, Email: xjanpen@gmail.com

Abstract

Introduction: In eastern Thailand, Amomum verum and Cinnamomum parthenoxylon are native plants used by local communities for their medical and culinary properties. This study determined the chemical composition and biological activities of the essential oils from A. verum shoots (AVSEO) and C. parthenoxylon wood (CPW-EO).

Methods: Essential oils were extracted using hydro-distillation and analyzed using gas chromatography-mass spectroscopy (GC-MS). The antimicrobial activity was evaluated using the disc diffusion method and broth microdilution assay. The cytotoxic activity of the essential oils was assessed against the human prostate adenocarcinoma (DU145) cell line using 3-(4,5-dimethylthiazol2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The antioxidant activity of the essential oils was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis-(3-ethylbenzothiazoline6-sulfonic acid) (ABTS) radical scavenging assays. The expression of antioxidant genes in the DU145 cells was evaluated using quantitative real-time polymerase chain reaction (qRT-PCR).

Results: 1,8-Cineole was the main component in AVS-EO and CPW-EO with 84.38, and 45.65 %, respectively. AVS-EO had stronger antimicrobial activity than CPW-EO. The lowest minimum inhibitory concentration (MIC) and minimum microbicidal concentration (MMC) values of AVSEO against Candida albicans were 0.3125 and 2.5 mg/mL, respectively. Both essential oils had timedependent and dose-dependent cytotoxic effects on the DU145 human prostate adenocarcinoma cells. CPW-EO had high antioxidant activity toward DPPH and ABTS radicals with IC50 values of 4.528±0.233 and 0.045±0.007 mg/mL, respectively. The two essential oils up-regulated glutathione peroxidase (GPx) and glutathione reductase (GRx) mRNA expression in the oxidative stress response of DU145 cells.

Conclusion: AVS-EO and CPW-EO might be added as natural ingredients in food or dietary supplement products for the benefit of microbial and prostate cancer inhibition.

Keywords: Amomum verum, Cinnamomum parthenoxylon, Essential oil, Antimicrobial activity, Cytotoxicity, Antioxidant activity

Implication for health policy/practice/research/medical education:

The essential oils of A. verum shoot (AVS-EO) and C. parthenoxylon wood (CPW-EO) had significant antimicrobial, antioxidant and cytotoxic properties. Consequently, they might be used as potential natural agents for the treatment of infectious diseases and prostate cancer.

Please cite this paper as: Tangjitjaroenkun J, Tangchitcharoenkhul R, Yahayo W, Supabphol S, Sappapan R, Supabphol R. Chemical compositions of essential oils of Amomum verum and Cinnamomum parthenoxylon and their in vitro biological properties. J Herbmed Pharmacol. 2020;9(3):223-229. doi: 10.34172/jhp.2020.29.

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Submitted: 20 Oct 2019
Accepted: 20 Mar 2020
ePublished: 02 May 2020
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