FOOD SCIENCE

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Chemical Constituents and Antimicrobial Activities of Pyroligneous Acid from Jujube Pit

ZHANG Lihua, WANG Dan, GONG Wenzhe, TANG Tingting   

  1. 1. College of Life Science, Zaozhuang University, Zaozhuang 277160, China;
    2. Zaozhuang Municipal Environmental Protection Bureau, Zaozhuang 277800, China
  • Online:2016-07-25 Published:2016-07-26

Abstract:

To achieve the comprehensive utilization of jujube pit, pyroligneous acid was prepared by pyrolyzing jujube
pit at 150 to 400 ℃ to analyze its chemical constituents by gas chromatography-mass spectrometry (GC-MS) and test its
antimicrobial activities against Escherichia coli, Penicillium glaucum and Coniella granati. The results showed that a total
of 35 compounds were detected by GC-MS analysis from the pyroligneous acid, mainly phenols, ketones, organic acids,
aldehydes, heterocyclic compounds, etc. Among them, the most abundant were phenols, ketones and organic acid, which
accounted for 71.01% of the total amount of compounds detected. All pyroligneous acids with three different concentrations
showed significant antimicrobial activities in a dose-dependent manner. The minimum inhibitory concentrations (MIC) of
the pyroligneous acid against Escherichia coli, Penicillium glaucum and Coniella granati were 1.25%, 2.5% and 0.625%,
respectively. These results preliminarily suggested that phenols and organic acids were the active components responsible
for the antimicrobial activity of pyroligneous acid.

Key words: jujube pit, pyroligneous acid, chemical constituents, antimicrobial activity

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