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Evaluation of Antimicrobial Activities of Seaweed Resources from Zhejiang Coast, China

Author

Listed:
  • Yong Li

    (College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China)

  • Siqi Sun

    (School of Marine Sciences, Ningbo University, Ningbo 315211, China)

  • Xiaowei Pu

    (School of Marine Sciences, Ningbo University, Ningbo 315211, China)

  • Yuzhe Yang

    (School of Marine Sciences, Ningbo University, Ningbo 315211, China)

  • Fei Zhu

    (College of Animal Science and Technology, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China)

  • Shouyu Zhang

    (College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China)

  • Nianjun Xu

    (School of Marine Sciences, Ningbo University, Ningbo 315211, China)

Abstract

In order to utilize seaweeds as a natural therapeutic agent in aquatic cultures, it is important to evaluate their antimicrobial activities. We analyzed that of the typical seaweeds of the Zhejiang Coast in order to improve their potential utilization. Six species of seaweeds were collected from the Zhejiang coast— Ulva pertusa , Ulva prolifera , Gloiopeltis furcata , Gracilariopsis lemaneiformis , Sargassum fusiforme and Ishige okamurae —and their ethanolic extracts were tested for antibacterial effects as well as antiviral activity against the white spot syndrome virus (WSSV). The seaweed extracts inhibited bacterial growth in vitro, and increased the immune responsiveness and survival of the crab Scylla paramamosain infected with WSSV in a concentration-dependent manner. U. prolifera , G. lemaneiformis , and S. fusiforme showed the most potent antibacterial activities and most significant enhancement of the innate immunity in healthy crabs. In conclusion, our study showed that the seaweed extracts have therapeutic effects and are a potential natural medicine for aquatic animals.

Suggested Citation

  • Yong Li & Siqi Sun & Xiaowei Pu & Yuzhe Yang & Fei Zhu & Shouyu Zhang & Nianjun Xu, 2018. "Evaluation of Antimicrobial Activities of Seaweed Resources from Zhejiang Coast, China," Sustainability, MDPI, vol. 10(7), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:7:p:2158-:d:154266
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