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Strain-boosted hyperoxic graphene oxide efficiently loading and improving performances of microcystinase

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Title: Strain-boosted hyperoxic graphene oxide efficiently loading and improving performances of microcystinase
Authors: Hong-Lin Liu, Cai Cheng, Ling-Zi Zuo, Ming-Yue Yan, Yan-Lin He, Shi Huang, Ming-Jing Ke, Xiao-Liang Guo, Yu Feng, Hai-Feng Qian, Ling-Ling Feng
Source: iScience, Vol 25, Iss 7, Pp 104611- (2022)
Publisher Information: Elsevier, 2022.
Publication Year: 2022
Collection: LCC:Science
Subject Terms: Applied microbiology, Materials science, Materials chemistry, Science
More Details: Summary: Harmful Microcystis blooms (HMBs) and microcystins (MCs) that are produced by Microcystis seriously threaten water ecosystems and human health. This study demonstrates an eco-friendly strategy for simultaneous removal of MCs and HMBs by adopting unique hyperoxic graphene oxides (HGOs) as carrier and pure microcystinase A (PMlrA) as connecting bridge to form stable HGOs@MlrA composite. After oxidation, HGOs yield inherent structural strain effects for boosting the immobilization of MlrA by material characterization and density functional theory calculations. HGO5 exhibits higher loading capacities for crude MlrA (1,559 mg·g−1) and pure MlrA (1,659 mg·g−1). Moreover, the performances of HGO5@MlrA composite, including the capability of removing MCs and HMBs, the ecological and human safety compared to MlrA or HGO5 treatment alone, have been studied. These results indicate that HGO5 can be used as a promising candidate material to effectively improve the application potential of MlrA in the simultaneous removal of MCs and HMBs.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2589-0042
Relation: http://www.sciencedirect.com/science/article/pii/S2589004222008835; https://doaj.org/toc/2589-0042
DOI: 10.1016/j.isci.2022.104611
Access URL: https://doaj.org/article/214bb072016047cab454fdc50ddd140b
Accession Number: edsdoj.214bb072016047cab454fdc50ddd140b
Database: Directory of Open Access Journals
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  Data: iScience, Vol 25, Iss 7, Pp 104611- (2022)
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  Data: Summary: Harmful Microcystis blooms (HMBs) and microcystins (MCs) that are produced by Microcystis seriously threaten water ecosystems and human health. This study demonstrates an eco-friendly strategy for simultaneous removal of MCs and HMBs by adopting unique hyperoxic graphene oxides (HGOs) as carrier and pure microcystinase A (PMlrA) as connecting bridge to form stable HGOs@MlrA composite. After oxidation, HGOs yield inherent structural strain effects for boosting the immobilization of MlrA by material characterization and density functional theory calculations. HGO5 exhibits higher loading capacities for crude MlrA (1,559 mg·g−1) and pure MlrA (1,659 mg·g−1). Moreover, the performances of HGO5@MlrA composite, including the capability of removing MCs and HMBs, the ecological and human safety compared to MlrA or HGO5 treatment alone, have been studied. These results indicate that HGO5 can be used as a promising candidate material to effectively improve the application potential of MlrA in the simultaneous removal of MCs and HMBs.
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