Antimicrobial mechanisms of natural plant extracts and applications in preserving fruits and vegetables

  • LI Yuanzheng ,
  • HU Wenzhong ,
  • SAREN Gaowa ,
  • LONG Ya ,
  • LAO Ying ,
  • YANG Xiangyan ,
  • LIAO Jia
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  • 1College of Life Science, Dalian Minzu University, Dalian 116600, China
    2Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China
    3College of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China

Received date: 2019-01-21

  Online published: 2019-08-20

Abstract

Plant extracts are one or more bioactive substances obtained by physical or chemical separation and extraction methods, which have broad-spectrum antibacterial, bactericidal and antioxidant effects, and have been widely used in animal and plant product processing, storage and preservation. In this paper, plant extracts were systematically divided into eight categories according to their bacteriostatic active components, including alkaloids, organic acids, volatile oils, flavonoids, polyphenols, polysaccharides, saponins, and tannins. The bacteriostatic mechanisms of plant extracts have three aspects: cell wall and cell membrane, DNA and protein, and intracellular energy metabolism. Besides, applications of plant extracts in preserving fruits and vegetables were summarized, and it was found that this area has high research value and development prospect. In the future, plant extracts can be further studied for food storage and preservation packaging and technologies for extracting effective components. This review aimed to provide a theoretical basis for researching and applying bacteriostatic plant extracts in food preservation and processing.

Cite this article

LI Yuanzheng , HU Wenzhong , SAREN Gaowa , LONG Ya , LAO Ying , YANG Xiangyan , LIAO Jia . Antimicrobial mechanisms of natural plant extracts and applications in preserving fruits and vegetables[J]. Food and Fermentation Industries, 2019 , 45(14) : 239 -244 . DOI: 10.13995/j.cnki.11-1802/ts.020026

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