African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12278

Short Communication

Primary study on the components and main physico-chemical as well as biological properties of the oil of Alpinia galanga (L.) Wild in Phu Tho-Vietnam

Nguyen Van Loi
  • Nguyen Van Loi
  • Hanoi Institute of Technology, Hanoi University of Industry, Vietnam.
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Nguyen Quynh Uyen
  • Nguyen Quynh Uyen
  • Institute of Microbiology and Biotechnology, Vietnam National University, Hanoi, Vietnam.
  • Google Scholar


  •  Received: 13 June 2016
  •  Accepted: 10 November 2016
  •  Published: 30 November 2016

Abstract

The oil of Alpinia galanga (L.) Willd in Phu Tho was obtained by steam distillation and dried with Na2SO4. By Gas chromatography-mass spectrometry (GC-MS) method, 29 components in the oil were predicted by comparing their retention times and molecular weights with the standards’. In particular, there were 10 hydrocarbons such as monoterpenes: 29.15%, sesquiterpenes: 21.06%, and 19 oxygenated components like aldehydes (7.29%), alcohols (32.43%), ketones (1.09%), and esters (7.57%). Physico-chemical properties, antioxidant activities as well as antimicrobial activities of the oils were also analyzed. The density (at 20°C), acid index and ester index of the oil were 0.812 g/ml; 0.653 mg KOH/g and 0.728 mg KOH/g, respectively. The antioxidant activity was determined by using 1,1-diphenyl-2-picrylhydrazol (DPPH) radical percentage inhibition and it was 47.15±0.34%. Antimicrobial activity against Salmonella typhi, Bacillus cereus, Staphylococcus aureus and Escherichia coli of the oil was identified by agar diffusion method.

Key words: Oil of Alpinia galangal (L.) Willd in Phu Tho-Vietnam, components, physico-chemical, biological activity.