Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 84, 2016, Issue in Progress
Previous Article Next Article

Effect of chitosan quaternary ammonium salt on the growth and microcystins release of Microcystis aeruginosa

Author affiliations

Abstract

Developing effective methods to control Microcystis aeruginosa (M. aeruginosa) bloom is significant for repelling the adverse impact from hepatotoxic microcystins (MCs). Chitosan quaternary ammonium salt (HTCC), a water-soluble derivative of chitosan, shows excellent antioxidant and antibacterial properties. The present study was the first to research the application potential of HTCC in M. aeruginosa control. Five experimental groups with different doses of HTCC (0, 0.6 mg L−1, 1.2 mg L−1, 2.4 mg L−1, and 4.8 mg L−1) were built to explore the effects of HTCC on the growth and physiological changes of M. aeruginosa and the release of intracellular matter. The results indicated that the growth of M. aeruginosa was effectively inhibited by HTCC, and the inhibition efficiency was dependent on dosage within 7 days (d). Especially for the treatment with 4.8 mg L−1 HTCC, the inhibitory rate remained above 93.6% after 7 d exposure. However, the integrity of M. aeruginosa cells treated with 2.4 and 4.8 mg L−1 HTCC may be damaged and partial MCs were released. Furthermore, the release of MCs in the 1.2 mg L−1 HTCC treated groups was significantly lower than that of the control sample. To balance the inhibition efficiency of M. aeruginosa and the release of MCs, 1.2 mg L−1 was chosen as the appropriate dose for inhibiting the growth of M. aeruginosa and reducing the release of MCs. HTCC could damage the antioxidant defense system of M. aeruginosa and exhibit the inhibitive property. The results demonstrated HTCC can be used as an effective and safe inhibitor to control algal blooms.

Graphical abstract: Effect of chitosan quaternary ammonium salt on the growth and microcystins release of Microcystis aeruginosa

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 May 2016, accepted on 11 Aug 2016 and first published on 11 Aug 2016


Article type: Paper
DOI: 10.1039/C6RA11789A
Citation: RSC Adv., 2016,6, 81028-81036

  •   Request permissions

    Effect of chitosan quaternary ammonium salt on the growth and microcystins release of Microcystis aeruginosa

    Y. Zhu, H. Pei, W. Hu, Y. Jin, H. Xu, Y. Ren and D. Xue, RSC Adv., 2016, 6, 81028
    DOI: 10.1039/C6RA11789A

Search articles by author

Spotlight

Advertisements