A field application feasibility assessment of naphthoquinone derivatives for the mitigation of freshwater diatom Stephanodiscus blooms

Joo, Jae-Hyoung; Kang, Yoon-Ho; Park, Bum Soo; Park, Chong-Sung; Cho, Hoon; Han, Moonsik

doi:10.1007/s10811-015-0686-2

Cited by 8 publications

(2 citation statements)

References 52 publications

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“…따라서, 조류 제어를 위해 대상 조류에 특이적인 살조범위를 갖고 생태계에 교란이 적은 친환경적인 조류 제어 기술 개 발의 필요성이 대두되고 있다 (Gumbo et al 2008, Byun et al 2014. 본 연구진은 보다 친환경적인 조류 제어 기법을 개 발하고자 자연계에 존재하는 물질을 대상으로 탐색 하였고, 그 결과 Naphthoquinone (이하 Nq)을 기반 으로 한 생물유래 합성물질을 개발하였다 (Joo 2012).…”

Section: 서 론unclassified

Application Possibility of Naphthoquinone Derivative Nq 4-6 for Mitigation of Winter Diatom Bloom

Han¹,

변정환²,

Joo³

et al. 2015

Ecology and Resilient Infrastructure

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We conducted the algicidal activity screening tests using 10 L microcosm to investigate the possibility of the field application of naphthoquinone derivative Nq 4-6 compound as an algicide. We determined its application range to assess its algicidal effects on the phytoplankton and to evaluate the response of the planktonic community and the water environment to this chemical. From results of the microcosm experiments, Nq 4-6 compound showed high algicidal activity on the centric diatoms such as Stephanodiscus hantzschii and Cyclotella meneghiniana, but it had no effect on other phytoplankton. The abundance of S. hantzschii continuously increased in the control, but its cell density decreased 1 day after the Nq 4-6 treatment. In particular, Nq 4-6 showed algicidal activity of 94.4% against S. hantzschii 7 days after the treatment. The dominance index of phytoplankton community was lower in the treatment than in the control. The diversity index, richness index and evenness index of phytoplankton community was higher in the treatment. Environmental factors and biological factors did not show specific changes after the Nq 4-6 compound treatment. Therefore, the results of this study demonstrates that Nq 4-6 is an effective agent for the control of S. hantzschii blooms, and that the microcosm tests play a crucial role when assessing field application.

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Section: 서 론unclassified

Application Possibility of Naphthoquinone Derivative Nq 4-6 for Mitigation of Winter Diatom Bloom

Han¹,

변정환²,

Joo³

et al. 2015

Ecology and Resilient Infrastructure

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“…Several ways such as applications of biological agents, clay flocculants, chemical algaecides, and physical manipulation have been utilized to control HABs [8][9][10][11][12][13][14]. Among them, application of chemical algaecide is considered as an effective and popular technique [15,16]. In order to inhibit the growth of HABs species, the design of a selective and eco-friendly chemical agents are the interest of present research [6].…”

Section: Introductionmentioning

confidence: 99%

Laboratory studies of the algaecide GreenTD: stability, algaecidal activity and reduction of microcystin production

et al. 2021

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GreenTD (Dichlorobenzyl derivative, MW 362.17) is a new dichlorobenzyl derivative algaecide. It is effective and selective against harmful algal blooms (HABs). HABs cause serious problems for public health and fishery industries. Algae that cause HABs include Microcystis spp., Anabaena spp., and Aphanizomenon spp. Blooms of toxin-producing Microcystis aeruginosa occur regularly in fresh water where is rich in nitrogen and phosphorus nutrients. Environmental fate studies are needed to investigate the degradation of GreenTD. In the present study, we studied the persistence of GreenTD (90% aqueous solution) in water and toxic effects GreenTD on M. aeruginosa and reduction of microcystin production in the culture media. GreenTD was added in the water pots and microcystis media tubes at levels of 25 g/0.1 ha (0.5 mg/kg) and 50 g/0.1 ha (1.0 mg/kg). Samples were collected after 1, 3, 5, 7 and 14 days. The residues of GreenTD and microcystins in water and the media were determined using high performance liquid chromatography-diode array detection and ultra-performance liquid chromatography-tandem mass spectrometry, respectively. The half-life of GreenTD at concentrations of 0.5 and 1.0 mg/kg was 4.5 and 3.6 days, respectively. This result presents a safety level suitable for the acceptable guideline of water residue. The average recoveries of microcystins RR, YR, LR, and LA were 106–115%, 103–110%, 96–105% and 89–113% in the microcystis media, respectively. The limit of detection of (LOD) the microcystins was 0.1 µg/kg. No microcystins in the media were detected at the LOD (0.1 µg/kg). GreenTD at concentrations of 0.2 and 0.5 µg/kg had a 100% of control efficacy of M. aeruginosa. No growth of the blue-green algae was observed after 14 days of GreenTD application.

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Field application of biologically derived substances (BDSs: Naphthoquinone derivative) for eco-friendly mitigation of harmful cyanobacterial blooms

Joo

Kang

et al. 2023

J Appl Phycol

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A field application feasibility assessment of naphthoquinone derivatives for the mitigation of freshwater diatom Stephanodiscus blooms

Cited by 8 publications

References 52 publications

Application Possibility of Naphthoquinone Derivative Nq 4-6 for Mitigation of Winter Diatom Bloom

Application Possibility of Naphthoquinone Derivative Nq 4-6 for Mitigation of Winter Diatom Bloom

Laboratory studies of the algaecide GreenTD: stability, algaecidal activity and reduction of microcystin production

Field application of biologically derived substances (BDSs: Naphthoquinone derivative) for eco-friendly mitigation of harmful cyanobacterial blooms

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