HUBEI AGRICULTURAL SCIENCES ›› 2019, Vol. 58 ›› Issue (18): 45-48.doi: 10.14088/j.cnki.issn0439-8114.2019.18.011

• Plant Protection • Previous Articles     Next Articles

Preliminary study on antimicrobial mechanism of Artemisia argyi aqueous extract on Escherichia coli

ZHANG Yuna, ZHANG Taoa, LUO Tinga, TANG Hong-fenga, b   

  1. a.College of Life Science and Chemistry; b.The Key Laboratory of Applied Biotechnology,Wuhan Donghu University,Wuhan 430212,China
  • Received:2019-05-09 Online:2019-09-25 Published:2019-11-08

Abstract: Using Escherichia coli as test bacteria, change of Escherichia coli culture fluid conductivity, total sugar and soluble protein were determined in aqueous extract of Artemisia argyi. The results showed that Artemisia argyi aqueous extract (3 g/mL) had stronger inhibitory effect on Escherichia coli. The minimal inhibitory concentration (MIC) was 32 times the dilution of the Artemisia argyi aqueous extract (3 g/mL). Under Artemisia argyi aqueous extract, Escherichia coli culture solution conductivity increased, the total sugar concentration and protein concentration increased. These results showed that the Artemisia argyi aqueous extract can damage the cell membrane of Escherichia coli, caused the cells to flow out. Therefore, the related physiological and biochemical indexes in the culture medium were affected.

Key words: Artemisia argyi aqueous extract, Escherichia coli, conductivity, antimicrobial mechanism

CLC Number: