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Antibacterial Mechanism of Liangguoan against Staphylococcus aureus and Escherichia coli.
Zeng, Yaoying; Yu, Qian; Cheng, Shujun.
Afiliación
  • Zeng Y; College of Food Science and Technology, Zhongkai University of Agriculture and Engineering, No. 501 Zhongkai Road, Haizhu District, 510225, Guangdong, People's Republic of China.
  • Yu Q; College of Food Science and Technology, Zhongkai University of Agriculture and Engineering, No. 501 Zhongkai Road, Haizhu District, 510225, Guangdong, People's Republic of China. ylzkah@126.com.
  • Cheng S; College of Food Science and Technology, Zhongkai University of Agriculture and Engineering, No. 501 Zhongkai Road, Haizhu District, 510225, Guangdong, People's Republic of China.
Arch Microbiol ; 203(7): 4025-4032, 2021 Sep.
Article en En | MEDLINE | ID: mdl-34041558
This study examined the antibacterial activity of the biological pesticide Liangguoan against Staphylococcus aureus and Escherichia coli as a potential replacement for chemical pesticide use in the fruit and vegetable industry. We measured the minimum inhibitory concentration and observed the changes in bacterial morphology, mortality, conductivity, nucleic acid content, and ATP content in response to the bactericide. The minimum inhibitory concentration of Liangguoan was 20 mg/mL for S. aureus and 40 mg/mL for E. coli. After treatment with Liangguoan, the mortality rates of S. aureus and E. coli reached 78.3% and 63.7%, respectively. We observed that the cells were scattered and that the cell morphology was altered in that the cells shortened. The interconnection effect and ATP content decreased, whereas cell conductivity and the nucleic acid content increased. In summary, Liangguoan inhibited S. aureus and E. coli by destroying their cell structure and disrupting their metabolism.
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Staphylococcus aureus / Extractos Vegetales / Escherichia coli Idioma: En Revista: Arch Microbiol Año: 2021 Tipo del documento: Article

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Staphylococcus aureus / Extractos Vegetales / Escherichia coli Idioma: En Revista: Arch Microbiol Año: 2021 Tipo del documento: Article