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Bergmann L, Balzer Le S, Hageskal G, Preuss L, Han Y, Astafyeva Y, Loevenich S, Emmann S, Perez-Garcia P, Indenbirken D, Katzowitsch E, Thümmler F, Alawi M, Wentzel A, Streit WR, Krohn I. New dienelactone hydrolase from microalgae bacterial community-Antibiofilm activity against fish pathogens and potential applications for aquaculture. Sci Rep 2024; 14:377. [PMID: 38172513 PMCID: PMC10764354 DOI: 10.1038/s41598-023-50734-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/24/2023] [Indexed: 01/05/2024] Open
Abstract
Biofilms are resistant to many traditional antibiotics, which has led to search for new antimicrobials from different and unique sources. To harness the potential of aquatic microbial resources, we analyzed the meta-omics datasets of microalgae-bacteria communities and mined them for potential antimicrobial and quorum quenching enzymes. One of the most interesting candidates (Dlh3), a dienelactone hydrolase, is a α/β-protein with predicted eight α-helices and eight β-sheets. When it was applied to one of the major fish pathogens, Edwardsiella anguillarum, the biofilm development was reproducibly inhibited by up to 54.5%. The transcriptome dataset in presence of Dlh3 showed an upregulation in functions related to self-defense like active genes for export mechanisms and transport systems. The most interesting point regarding the biotechnological potential for aquaculture applications of Dlh3 are clear evidence of biofilm inhibition and that health and division of a relevant fish cell model (CHSE-214) was not impaired by the enzyme.
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Affiliation(s)
- Lutgardis Bergmann
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany
| | - Simone Balzer Le
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Gunhild Hageskal
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Lena Preuss
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany
| | - Yuchen Han
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany
| | - Yekaterina Astafyeva
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany
| | - Simon Loevenich
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Sarah Emmann
- Molecular Microbiology, Institute for General Microbiology, Kiel University, Kiel, Germany
| | - Pablo Perez-Garcia
- Molecular Microbiology, Institute for General Microbiology, Kiel University, Kiel, Germany
| | | | - Elena Katzowitsch
- Core Unit Systems Medicine, University of Würzburg, Würzburg, Germany
| | - Fritz Thümmler
- Core Unit Systems Medicine, University of Würzburg, Würzburg, Germany
| | - Malik Alawi
- Bioinformatics Core, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexander Wentzel
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Wolfgang R Streit
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany
| | - Ines Krohn
- Department of Microbiology and Biotechnology, Institute of Plant Science and Microbiology, University of Hamburg, Ohnhorststr.18, 22609, Hamburg, Germany.
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Rifna EJ, Rajauria G, Dwivedi M, Tiwari BK. Circular economy approaches for the production of high-value polysaccharides from microalgal biomass grown on industrial fish processing wastewater: A review. Int J Biol Macromol 2024; 254:126887. [PMID: 37709230 DOI: 10.1016/j.ijbiomac.2023.126887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 07/19/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
The discharge of high-strength wastewater from the fish-processing industries, comprising undefined blends of toxic and organic compounds, has always been a subject of great disquiet worldwide. Despite a large number of effluent treatment methodologies known to date, biosorption with the aid of naturally grown microalgae has been recognized recently to possess promising outcomes in eradicating pollutants comprising organic compounds from liquid effluents. Interestingly, the microalgal biomass harvested from phytoremediation of fish effluent was identified to be abundant in bio compounds that exhibited potential application in pharmaceutical, nutraceutical, and, aquaculture feed, generating a circular economy. In this context, the focus of the review is to emphasize the applications of microalgal species as naturally occurring and zero-cost adsorbents for the elimination of organic contaminants from fish liquid effluents. The summary of the literature encompassed in this work is supposed to benefit the readers to comprehend the primary mechanisms by which microalgae uptakes the organic matter from fish processing effluents and converts them into various biological molecules. From the scientific works assessed through this review, the most promising microalgae species regards to nutrient uptake and removal efficiency from fish effluent, were identified as Chlorella sp. > Spirulina sp. > Scenedesmus sp. The review further revealed supercritical fluid extraction as the robust extraction tool for the extraction of targeted bioproducts from microalgal biomass grown within fish effluents. Eventually, the information presented through this review establishes phytoremediation using microalgal biomass to be a natural cost-effective, sustainable circular bio-economy approach that could be robustly applied for the efficient treatment of wastewater discharged from food processing industries.
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Affiliation(s)
- E J Rifna
- Teagasc Food Research Centre, Department of Food Chemistry and Technology, Ashtown D15 KN3K, Dublin, Ireland
| | - Gaurav Rajauria
- Department of Biological and Pharmaceutical Sciences, Munster Technological University, Tralee V92 CX88, Co. Kerry, Ireland; School of Microbiology, School of Food and Nutritional Sciences, SUSFERM Fermentation Science and Bioprocess Engineering Centre, University College Cork, Cork, Ireland.
| | - Madhuresh Dwivedi
- Department of Food Process Engineering, National Institute of Technology Rourkela, Odisha, India
| | - Brijesh K Tiwari
- Teagasc Food Research Centre, Department of Food Chemistry and Technology, Ashtown D15 KN3K, Dublin, Ireland.
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Tamel Selvan K, Goon JA, Makpol S, Tan JK. Therapeutic Potentials of Microalgae and Their Bioactive Compounds on Diabetes Mellitus. Mar Drugs 2023; 21:462. [PMID: 37755075 PMCID: PMC10532649 DOI: 10.3390/md21090462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 09/28/2023] Open
Abstract
Diabetes mellitus is a metabolic disorder characterized by hyperglycemia due to impaired insulin secretion, insulin resistance, or both. Oxidative stress and chronic low-grade inflammation play crucial roles in the pathophysiology of diabetes mellitus. There has been a growing interest in applying natural products to improve metabolic derangements without the side effects of anti-diabetic drugs. Microalgae biomass or extract and their bioactive compounds have been applied as nutraceuticals or additives in food products and health supplements. Several studies have demonstrated the therapeutic effects of microalgae and their bioactive compounds in improving insulin sensitivity attributed to their antioxidant, anti-inflammatory, and pancreatic β-cell protective properties. However, a review summarizing the progression in this topic is lacking despite the increasing number of studies reporting their anti-diabetic potential. In this review, we gathered the findings from in vitro, in vivo, and human studies to discuss the effects of microalgae and their bioactive compounds on diabetes mellitus and the mechanisms involved. Additionally, we discuss the limitations and future perspectives of developing microalgae-based compounds as a health supplement for diabetes mellitus. In conclusion, microalgae-based supplementation has the potential to improve diabetes mellitus and be applied in more clinical studies in the future.
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Affiliation(s)
| | | | | | - Jen Kit Tan
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), Jalan Ya’acob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
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Tamel Selvan K, Goon JA, Makpol S, Tan JK. Effects of Microalgae on Metabolic Syndrome. Antioxidants (Basel) 2023; 12:449. [PMID: 36830009 PMCID: PMC9952430 DOI: 10.3390/antiox12020449] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Metabolic syndrome (MetS) is a cluster of metabolic disturbances, including abdominal obesity, hypertension, hypertriglyceridemia, reduced high-density lipoprotein cholesterol (HDL-C) and hyperglycemia. Adopting a healthier lifestyle and multiple drug-based therapies are current ways to manage MetS, but they have limited efficacy, albeit the prevalence of MetS is rising. Microalgae is a part of the human diet and has also been consumed as a health supplement to improve insulin sensitivity, inflammation, and several components of MetS. These therapeutic effects of microalgae are attributed to the bioactive compounds present in them that exhibit antioxidant, anti-inflammatory, anti-obesity, antihypertensive, hepatoprotective and immunomodulatory effects. Therefore, studies investigating the potential of microalgae in alleviating MetS are becoming more popular, but a review on this topic remains scarce. In this review, we discuss the effects of microalgae, specifically on MetS, by reviewing the evidence from scientific literature covering in vitro and in vivo studies. In addition, we also discuss the underlying mechanisms that modulate the effects of microalgae on MetS, and the limitations and future perspectives of developing microalgae as a health supplement for MetS. Microalgae supplementation is becoming a viable approach in alleviating metabolic disturbances and as a unique addition to the management of MetS.
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Affiliation(s)
| | | | | | - Jen Kit Tan
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), Jalan Ya’acob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
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