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Sánchez A, Galan-Caamal RJ, Ortiz-Hernández MC, Sánchez-Sánchez J, Camacho-Cruz KA, Anguas-Cabrera D. Ammonium depletion associated with the COVID-19 pandemic in the Mexican Caribbean. MARINE POLLUTION BULLETIN 2024; 202:116347. [PMID: 38608428 DOI: 10.1016/j.marpolbul.2024.116347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024]
Abstract
The Mexican Caribbean contributes significantly to Mexico's gross national product. The number of tourists declined from 16.7 million in 2019 to 8.8 million in 2020 due to the COVID-19 pandemic, with a rapid recovery of 13.5 million in 2021. Wastewater discharge is the primary contamination source associated with the tourism sector's demand for goods and services. Water quality could improve due to fewer tourists arriving during the COVID-19 sanitary emergency. This study aimed to quantify ammonium concentrations at eleven locations to evaluate water quality during the sanitary restriction due to the pandemic in the Mexican Caribbean. The ammonium concentrations were 85 % (Nov-2019), 89 % (Feb-2020), and 86 % (Feb-2021) higher than in Nov-2020, where six of the eleven sampled stations were below the detection limit (0.15 μM). Lower ammonium concentrations coincide with the sanitary restriction period and a decrease in affluent tourists.
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Affiliation(s)
- A Sánchez
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, La Paz, B.C.S., Mexico.
| | - R J Galan-Caamal
- El Colegio de la Frontera Sur, Unidad Chetumal, Chetumal, Quintana Roo, Mexico
| | | | - J Sánchez-Sánchez
- El Colegio de la Frontera Sur, Unidad Chetumal, Chetumal, Quintana Roo, Mexico
| | - K A Camacho-Cruz
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, La Paz, B.C.S., Mexico; Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo, Mexico
| | - D Anguas-Cabrera
- El Colegio de la Frontera Sur, Unidad Chetumal, Chetumal, Quintana Roo, Mexico
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2
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Léger-Pigout M, Navarro E, Ménard F, Ruitton S, Le Loc’h F, Guasco S, Munaron JM, Thibault D, Changeux T, Connan S, Stiger-Pouvreau V, Thibaut T, Michotey V. Predominant heterotrophic diazotrophic bacteria are involved in Sargassum proliferation in the Great Atlantic Sargassum Belt. THE ISME JOURNAL 2024; 18:wrad026. [PMID: 38365246 PMCID: PMC10833076 DOI: 10.1093/ismejo/wrad026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/27/2023] [Accepted: 12/08/2023] [Indexed: 02/18/2024]
Abstract
Since 2011, the Caribbean coasts have been subject to episodic influxes of floating Sargassum seaweed of unprecedented magnitude originating from a new area "the Great Atlantic Sargassum Belt" (GASB), leading in episodic influxes and mass strandings of floating Sargassum. For the biofilm of both holopelagic and benthic Sargassum as well as in the surrounding waters, we characterized the main functional groups involved in the microbial nitrogen cycle. The abundance of genes representing nitrogen fixation (nifH), nitrification (amoA), and denitrification (nosZ) showed the predominance of diazotrophs, particularly within the GASB and the Sargasso Sea. In both location, the biofilm associated with holopelagic Sargassum harboured a more abundant proportion of diazotrophs than the surrounding water. The mean δ15N value of the GASB seaweed was very negative (-2.04‰), and lower than previously reported, reinforcing the hypothesis that the source of nitrogen comes from the nitrogen-fixing activity of diazotrophs within this new area of proliferation. Analysis of the diversity of diazotrophic communities revealed for the first time the predominance of heterotrophic diazotrophic bacteria belonging to the phylum Proteobacteria in holopelagic Sargassum biofilms. The nifH sequences belonging to Vibrio genus (Gammaproteobacteria) and Filomicrobium sp. (Alphaproteobacteria) were the most abundant and reached, respectively, up to 46.0% and 33.2% of the community. We highlighted the atmospheric origin of the nitrogen used during the growth of holopelagic Sargassum within the GASB and a contribution of heterotrophic nitrogen-fixing bacteria to a part of the Sargassum proliferation.
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Affiliation(s)
- Matéo Léger-Pigout
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Elisabeth Navarro
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Frédéric Ménard
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Sandrine Ruitton
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | | | - Sophie Guasco
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | | | - Delphine Thibault
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Thomas Changeux
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Solène Connan
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
| | | | - Thierry Thibaut
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Valérie Michotey
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
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3
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Rosic N, Thornber C. Biotechnological Potential of Macroalgae during Seasonal Blooms for Sustainable Production of UV-Absorbing Compounds. Mar Drugs 2023; 21:633. [PMID: 38132954 PMCID: PMC10744652 DOI: 10.3390/md21120633] [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: 10/31/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Marine macroalgae (seaweeds) are important primary global producers, with a wide distribution in oceans around the world from polar to tropical regions. Most of these species are exposed to variable environmental conditions, such as abiotic (e.g., light irradiance, temperature variations, nutrient availability, salinity levels) and biotic factors (e.g., grazing and pathogen exposure). As a result, macroalgae developed numerous important strategies to increase their adaptability, including synthesizing secondary metabolites, which have promising biotechnological applications, such as UV-absorbing Mycosporine-Like Amino Acid (MAAs). MAAs are small, water-soluble, UV-absorbing compounds that are commonly found in many marine organisms and are characterized by promising antioxidative, anti-inflammatory and photoprotective properties. However, the widespread use of MAAs by humans is often restricted by their limited bioavailability, limited success in heterologous expression systems, and low quantities recovered from the natural environment. In contrast, bloom-forming macroalgal species from all three major macroalgal clades (Chlorophyta, Phaeophyceae, and Rhodophyta) occasionally form algal blooms, resulting in a rapid increase in algal abundance and high biomass production. This review focuses on the bloom-forming species capable of producing pharmacologically important compounds, including MAAs, and the application of proteomics in facilitating macroalgal use in overcoming current environmental and biotechnological challenges.
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Affiliation(s)
- Nedeljka Rosic
- Faculty of Health, Southern Cross University, Gold Coast, QLD 4225, Australia
- Marine Ecology Research Centre, Southern Cross University, Lismore, NSW 2480, Australia
| | - Carol Thornber
- Department of Natural Resources Science, University of Rhode Island, 120 Flagg Road, Kingston, RI 02881, USA;
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4
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Hernández-Navarro C, Pérez S, Flórez E, Acelas N, Muñoz-Saldaña J. Sargassum macroalgae from Quintana Roo as raw material for the preparation of high-performance phosphate adsorbent from aqueous solutions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118312. [PMID: 37270982 DOI: 10.1016/j.jenvman.2023.118312] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/12/2023] [Accepted: 05/30/2023] [Indexed: 06/06/2023]
Abstract
Currently, the large volumes of Sargassum biomass (Sgs) arriving on Caribbean coasts are a problem that must be solved quickly. One alternative is to obtain value-added products from Sgs. In this work, Sgs is demonstrated to be a high-performance Ca - bioadsorbent for phosphate removal by a heat pretreatment at 800 °C that produces biochar. According to XRD analysis, calcined Sgs (CSgs) have a composition of 43.68%, 40.51%, and 8.69% of Ca(OH)2, CaCO3, and CaO, making CSgs a promising material for phosphate removal and recovery. Results demonstrated that CSgs have a high capacity to adsorb P over a wide range of concentrations (25-1000 mg P/L). After P removal, at low P concentration, the adsorbent material is rich in apatite (Ca5(PO4)3OH), and at high P concentration, brushite (CaHPO4•2H2O) was the main P compound. The CSg reached a Qmax of 224.58 mg P/g, which is higher than other high-performance adsorbents reported in the literature. The phosphate adsorption mechanism was dominated by chemisorption, followed by precipitation according to the pseudo-second-order kinetic model. The solubility of P (74.5 wt%) in formic acid solution and the water-soluble P (24.8 wt%) for CSgs after P adsorption indicated that the final product presents the potential to be used as fertilizer for acid soils. This biomass's processability and high phosphate adsorption performance for P removal make CSgs a potential material for wastewater treatment, and subsequent use of these residues as fertilizer offers a circular economy solution to this problem.
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Affiliation(s)
- Carolina Hernández-Navarro
- Laboratorio Nacional de Proyección Térmica (CENAPROT), Centro de Investigación y de Estudios Avanzados Del IPN, Libramiento Norponiente 2000 Fracc. Real de Juriquilla, 76230, Querétaro, Mexico; Tecnológico Nacional de México CRODE-Celaya, Centro de Vinculación para la Innovación y Desarrollo Empresarial (CEVIDE), Departamento de Diseño y Desarrollo de Equipo, Manuel Orozco I. Berra 92, Col. Residencial Tecnológico, 38010, Celaya, Guanajuato, Mexico
| | - Sebastián Pérez
- Laboratorio Nacional de Proyección Térmica (CENAPROT), Centro de Investigación y de Estudios Avanzados Del IPN, Libramiento Norponiente 2000 Fracc. Real de Juriquilla, 76230, Querétaro, Mexico
| | - Elizabeth Flórez
- Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, 050026, Colombia
| | - Nancy Acelas
- Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, 050026, Colombia.
| | - Juan Muñoz-Saldaña
- Laboratorio Nacional de Proyección Térmica (CENAPROT), Centro de Investigación y de Estudios Avanzados Del IPN, Libramiento Norponiente 2000 Fracc. Real de Juriquilla, 76230, Querétaro, Mexico.
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Liranzo-Gómez RE, Gómez AM, Gómez B, González-Hernández Y, Jauregui-Haza UJ. Characterization of sargassum accumulated on Dominican beaches in 2021: Analysis of heavy, alkaline and alkaline-earth metals, proteins and fats. MARINE POLLUTION BULLETIN 2023; 193:115120. [PMID: 37307752 DOI: 10.1016/j.marpolbul.2023.115120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 05/20/2023] [Accepted: 05/29/2023] [Indexed: 06/14/2023]
Abstract
This paper presents the characterization of sargassum that reached the shores of eight Dominican beaches in 2021. The analysis of heavy, alkaline and alkaline-earth metals was performed by ICP-OES. Twelve heavy metals were studied, with the highest concentrations corresponding to Fe, As, and Zn. Regarding the alkaline and alkaline-earth metals, the highest concentrations were detected for Ca, K, Na and Mg. The high values of arsenic and alkali and alkaline-earth metal salts do not suggest using these algae in agriculture. It is recommended to carry out arsenic speciation studies to assess whether the form in which it is found is bioavailable for plants and animals. The heavy metal contamination index was determined, which ranged between 0.318 and 3.279. Finally, for the first time in the country, the organic fraction of sargassum was analyzed.
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Affiliation(s)
- Rolando Esteban Liranzo-Gómez
- Área de Ciencias Básicas y Ambientales, Instituto Tecnológico de Santo Domingo (INTEC), Dominican Republic; LPL Consulting Group, SRL, Dominican Republic
| | | | - Bolívar Gómez
- Laboratorio de la Dirección General de Aduana, Dominican Republic
| | - Yusmel González-Hernández
- LGPM, CentraleSupélec, Centre Européen de Biotechnologie et de Bioéconomie (CEBB), 3 rue des Rouges Terres, 51110 Pomacle, France
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6
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Alleyne KST, Neat F, Oxenford HA. An analysis of arsenic concentrations associated with sargassum influx events in Barbados. MARINE POLLUTION BULLETIN 2023; 192:115064. [PMID: 37207389 DOI: 10.1016/j.marpolbul.2023.115064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/21/2023]
Abstract
Tropical Atlantic blooms of pelagic Sargassum spp. present major socioeconomic and ecological challenges for Caribbean and West African nations. Valorisation of sargassum provides an opportunity to ameliorate some of the damage to national economies; however, the active uptake of arsenic by pelagic sargassum creates significant barriers to its use. When defining valorisation pathways, it is important to understand arsenic speciation in pelagic sargassum, given the different levels of toxicity associated with different arsenic species. In this study, we assess the temporal variability of total arsenic and inorganic arsenic in pelagic sargassum arriving in Barbados; and test whether arsenic concentrations are linked to oceanic sub-origins. Results indicate that inorganic arsenic, the most toxic form, represents a consistent and substantial percentage of the total arsenic present in pelagic sargassum, and that variability in arsenic concentration does not appear to be driven by sample months, years or oceanic sub-origins/transport pathways.
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Affiliation(s)
- Kristie S T Alleyne
- World Maritime University, Sasakawa Global Ocean Institute, P.O. Box 500, SE 201 24 Malmӧ, Sweden.
| | - Francis Neat
- World Maritime University, Sasakawa Global Ocean Institute, P.O. Box 500, SE 201 24 Malmӧ, Sweden
| | - Hazel A Oxenford
- Centre for Resource Management and Environmental Studies, Cave Hill Campus, University of the West Indies, Bridgetown BB11000, Barbados
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7
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Sánchez A, Gonzalez-Jones P, Camacho-Cruz KA, Anguas-Cabrera D, Ortiz-Hernández MC, Rey-Villiers N. Influence of pelagic sargassum influxes on the δ 15N in Thalassia testudinum of the Mexican Caribbean coastal ecosystem. MARINE POLLUTION BULLETIN 2023; 192:115091. [PMID: 37269703 DOI: 10.1016/j.marpolbul.2023.115091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/30/2023] [Accepted: 05/19/2023] [Indexed: 06/05/2023]
Abstract
The conservation of Mexican Caribbean Ecosystems (MCE) involves ensuring their capacity to provide resources and ecosystem services to society. Monitoring programs are necessary to establish their management and ensure their sustainability. Thalassia testudinum is the community used to determine anthropogenic influence, in which wastewater is the primary anthropogenic nitrogen source. The extensive amount of pelagic sargassum that enters the area and its decomposition may be additional nitrogen sources in MCE. In the present study, the δ15N in T. testudinum was examined from 2009 to 2019 to infer the nitrogen contribution from pelagic sargassum to MCE. T. testudinum δ15N values showed significant depletion from June/October 2014 to 2019 concerning previous periods. Pelagic sargassum was an alternative nitrogen source, and its leaching reduced T. testudinum δ15N values in MCE.
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Affiliation(s)
- Alberto Sánchez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico.
| | - Paula Gonzalez-Jones
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico
| | - Karla A Camacho-Cruz
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico; El Colegio de la Frontera Sur, Chetumal, Quintana Roo, Mexico
| | - Dilian Anguas-Cabrera
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico; El Colegio de la Frontera Sur, Chetumal, Quintana Roo, Mexico
| | | | - Néstor Rey-Villiers
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico; Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo, Mexico
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8
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Garcia-Perez P, Cassani L, Garcia-Oliveira P, Xiao J, Simal-Gandara J, Prieto MA, Lucini L. Algal nutraceuticals: A perspective on metabolic diversity, current food applications, and prospects in the field of metabolomics. Food Chem 2023; 409:135295. [PMID: 36603477 DOI: 10.1016/j.foodchem.2022.135295] [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: 09/20/2022] [Revised: 11/16/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
The current consumers' demand for food naturalness is urging the search for new functional foods of natural origin with enhanced health-promoting properties. In this sense, algae constitute an underexplored biological source of nutraceuticals that can be used to fortify food products. Both marine macroalgae (or seaweeds) and microalgae exhibit a myriad of chemical constituents with associated features as a result of their primary and secondary metabolism. Thus, primary metabolites, especially polysaccharides and phycobiliproteins, present interesting properties to improve the rheological and nutritional properties of food matrices, whereas secondary metabolites, such as polyphenols and xanthophylls, may provide interesting bioactivities, including antioxidant or cytotoxic effects. Due to the interest in algae as a source of nutraceuticals by the food and related industries, novel strategies should be undertaken to add value to their derived functional components. As a result, metabolomics is considered a high throughput technology to get insight into the full metabolic profile of biological samples, and it opens a wide perspective in the study of algae metabolism, whose knowledge is still little explored. This review focuses on algae metabolism and its applications in the food industry, paying attention to the promising metabolomic approaches to be developed aiming at the functional characterization of these organisms.
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Affiliation(s)
- Pascual Garcia-Perez
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy.
| | - Lucia Cassani
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Paula Garcia-Oliveira
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Jianbo Xiao
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain
| | - Miguel A Prieto
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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9
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López-Miranda JL, Mares-Briones F, Molina GA, González-Reyna MA, Velázquez-Hernández I, España-Sánchez BL, Silva R, Esparza R, Estévez M. Sargassum natans I Algae: An Alternative for a Greener Approach for the Synthesis of ZnO Nanostructures with Biological and Environmental Applications. Mar Drugs 2023; 21:297. [PMID: 37233491 PMCID: PMC10224490 DOI: 10.3390/md21050297] [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: 04/07/2023] [Revised: 05/07/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023] Open
Abstract
In this work, the influence of the Sargassum natans I alga extract on the morphological characteristics of synthesized ZnO nanostructures, with potential biological and environmental applications, was evaluated. For this purpose, different ZnO geometries were synthesized by the co-precipitation method, using Sargassum natans I alga extract as stabilizing agent. Four extract volumes (5, 10, 20, and 50 mL) were evaluated to obtain the different nanostructures. Moreover, a sample by chemical synthesis, without the addition of extract, was prepared. The characterization of the ZnO samples was carried out by UV-Vis spectroscopy, FT-IR spectroscopy, X-ray diffraction, and scanning electron microscopy. The results showed that the Sargassum alga extract has a fundamental role in the stabilization process of the ZnO nanoparticles. In addition, it was shown that the increase in the Sargassum alga extract leads to preferential growth and arrangement, obtaining well-defined shaped particles. ZnO nanostructures demonstrated significant anti-inflammatory response by the in vitro egg albumin protein denaturation for biological purposes. Additionally, quantitative antibacterial analysis (AA) showed that the ZnO nanostructures synthesized with 10 and 20 mL of extract demonstrated high AA against Gram (+) S. aureus and moderate AA behavior against Gram (-) P. aeruginosa, depending on the ZnO arrangement induced by the Sargassum natans I alga extract and the nanoparticles' concentration (ca. 3200 µg/mL). Additionally, ZnO samples were evaluated as photocatalytic materials through the degradation of organic dyes. Complete degradation of both methyl violet and malachite green were achieved using the ZnO sample synthesized with 50 mL of extract. In all cases, the well-defined morphology of ZnO induced by the Sargassum natans I alga extract played a key role in the combined biological/environmental performance.
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Affiliation(s)
- Jose Luis López-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - Fabian Mares-Briones
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - Gustavo A. Molina
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - M. A. González-Reyna
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - Isaac Velázquez-Hernández
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - Beatriz Liliana España-Sánchez
- CONACYT_Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC, Parque Tecnológico Querétaro s/n Sanfandila, Pedro Escobedo 76703, Mexico;
| | - Rodolfo Silva
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico;
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
| | - Miriam Estévez
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (F.M.-B.); (G.A.M.); (M.A.G.-R.); (I.V.-H.); (R.E.)
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10
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Luo H, Yang Y, Xie S. The ecological effect of large-scale coastal natural and cultivated seaweed litter decay processes: An overview and perspective. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 341:118091. [PMID: 37150170 DOI: 10.1016/j.jenvman.2023.118091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/09/2023]
Abstract
Seaweeds are important components of marine ecosystems and can form a large biomass in a few months. The decomposition of seaweed litter provides energy and material for primary producers and consumers and is an important link between material circulation and energy flow in the ecosystem. However, during the growth process, part of the seaweed is deposited on the sediment surface in the form of litter. Under the joint action of the environment and organisms, elements enriched in seaweed can be released back into the environment in a short time, causing pollution problems. The cultivation yield of seaweed worldwide reached 34.7 million tons in 2019, but the litter produced during the growth and harvest process has become a vital bottleneck that restricts the further improvement of production and sustainable development of the seaweed cultivation industry. Seaweed outbreaks worldwide occur frequently, producing a mass of litter and resulting in environmental pollution on coasts and economic losses, which have negative effects on coastal ecosystems. The objective of this review is to discuss the decomposition process and ecological environmental effects of seaweed litter from the aspects of the research progress on seaweed litter; the impact of seaweed litter on the environment; and its interaction with organisms. Understanding the decomposition process and environmental impact of seaweed litter can provide theoretical support for coastal environmental protection, seaweed resource conservation and sustainable development of the seaweed cultivation industry worldwide. This review suggests that in the process of large-scale seaweed cultivation and seaweed outbreaks, ageing or falling litter should be cleared in a timely manner, mature seaweed should be harvested in stages, and dried seaweed produced after harvest and washed up on shore should be handled properly to ensure the benefits of environmental protection provided by seaweed growth and sustainable seaweed resource development.
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Affiliation(s)
- Hongtian Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, China; Institute of Hydrobiology, Key Laboratory of Philosophy and Social Science in Guangdong Province of Jinan University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou, 510632, China
| | - Yufeng Yang
- Institute of Hydrobiology, Key Laboratory of Philosophy and Social Science in Guangdong Province of Jinan University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou, 510632, China.
| | - Songguang Xie
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, China.
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Characterization of Sargassum spp. from the Mexican Caribbean and Its Valorization through Fermentation Process. Processes (Basel) 2023. [DOI: 10.3390/pr11030685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
Sargassum is a brown macroalga that has become a general environmental problem in the Mexican Caribbean. Despite the negative effects on the beaches, the algae contain compounds of biotechnological and agronomic interest. The possibility of using sargassum as a substrate under liquid media fermentation (LMF) processes will allow the obtention of bioactive compounds. In this research, five species of Sargassum from the Puerto Morelos region were collected from the beach. The samples were divided into natural Sargassum and washed Sargassum, and the total phenolic compounds (TPC), flavonoids (F), and antioxidant capacity (AOxC) were determined. Once the material was characterized, it was fermented in the LMF process using the Aspergillus niger strain, where the obtained extracts were analyzed. Three holopelagic and one benthic species were identified. The proximal analysis of the seaweed in natural and washed conditions shows adequate carbon–nitrogen ratio values for use as a substrate for microbial degradation. Comparing the fermented extracts with fresh Sargassum, the analyses showed a TPC increase for washed Sargassum fermentation and a TPC decrease for natural Sargassum fermentation; the flavonoid content reached 8-fold higher in the washed Sargassum fermentation. An average AOxC of 57% was achieved during the washed Sargassum LMF process, with a maximum of 69% of ABTS inhibition. Considering these results, Sargassum can be used as a substrate in LMF processes to obtain bioactive compounds.
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Lopez-Miranda JL, Molina GA, González-Reyna MA, España-Sánchez BL, Esparza R, Silva R, Estévez M. Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts. Int J Mol Sci 2023; 24:1474. [PMID: 36674991 PMCID: PMC9866058 DOI: 10.3390/ijms24021474] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 01/13/2023] Open
Abstract
The present work shows the synthesis of ZnO nanoparticles through a green method, using sargassum extracts, which provide the reducing and stabilizing compounds. The conditions of the medium in which the reaction was carried out was evaluated, that is, magnetic stirring, ultrasound assisted, and resting condition. UV-Vis, FTIR spectroscopy, and X-ray diffraction results confirmed the synthesis of ZnO with nanometric crystal size. The scanning electron microscopy analysis showed that the morphology and size of the particles depends on the synthesis condition used. It obtained particles between 20 and 200 nm in the sample without agitation, while the samples with stirring and ultrasound were 80 nm and 100 nm, respectively. ZnO nanoparticles showed antibacterial activity against Gram-positive S. aureus and Gram-negative P. aeruginosa. A quantitative analysis was performed by varying the concentration of ZnO nanoparticles. In all cases, the antibacterial activity against Gram-positives was greater than against Gram-negatives. Ultrasound-assisted ZnO nanoparticles showed the highest activity, around 99% and 80% for S. aureus and P. aeruginosa, respectively. Similar results were obtained in the study of the anti-inflammatory activity of ZnO nanoparticles; the ultrasound-assisted sample exhibited the highest percentage (93%), even above that shown by diclofenac, which was used as a reference. Therefore, the ZnO nanoparticles synthesized with sargassum extracts have properties that can be used safely and efficiently in the field of biomedicine.
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Affiliation(s)
- Jose Luis Lopez-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Gustavo A. Molina
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Marlen Alexis González-Reyna
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Beatriz Liliana España-Sánchez
- CONACYT_Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC, Parque Tecnológico Querétaro s/n Sanfandila, Pedro Escobedo 76703, Mexico
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Rodolfo Silva
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán 04510, Mexico
| | - Miriam Estévez
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
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Gobert T, Gautier A, Connan S, Rouget ML, Thibaut T, Stiger-Pouvreau V, Waeles M. Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus. CHEMOSPHERE 2022; 308:136186. [PMID: 36041518 DOI: 10.1016/j.chemosphere.2022.136186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/04/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
We document for the first time, the spatial distribution at basin scale (North tropical Atlantic Ocean) of As, P and trace metal (TM) concentrations in the three morphotypes belonging to the two holopelagic species Sargassum natans and S. fluitans and three morphotypes: S. natans VIII, S. natans I and S. fluitans III. These samples collected in the North equatorial current (NEC) and in the subtropical Sargasso Sea (sSS) (∼25°N, 60°W) were also compared to coastal samples collected downwind Guadeloupe Island and on the strand of Martinique (mangrove and beach). Along the studied zonal oceanic transect, the highest values of As (range 120-240 μg g-1, dry weight, dw) were found in the sSS area where primary production is highly limited by phosphorus. At these stations, the P content of Sargassum spp. was minimal (range 500-1000 μg g-1, dw) as well as the content in Cd and Zn known for their nutrient-like oceanic behaviors and distributions very similar to P. This illustrates for the first time in the natural environment, the higher bioaccumulation of arsenic in Sargassum spp. in P-limiting conditions which is due to the competition in the phosphate transporter between arsenate and phosphate. As compared to samples collected at sea, the Sargassum spp. collected in the strand of Martinique had (1) lower As concentrations (typical range 30-45 μg g-1, dw) and (2) much higher Al, Fe, Mn, Cr and Co concentrations, showing a certain ability of Sargassum spp. to be depurated of its As content in the coastal zone following competitive exchange with terrigenous metals.
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Affiliation(s)
- Tristan Gobert
- University of Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
| | - Ambre Gautier
- University of Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
| | - Solène Connan
- University of Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
| | | | - Thierry Thibaut
- Aix Marseille University and Université de Toulon, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Marseille, France
| | | | - Matthieu Waeles
- University of Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France.
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Camacho-Cruz K, Rey-Villiers N, Ortiz-Hernández MC, González-Jones P, Galán-Caamal RDJ, Matus-Hernández M, Sánchez A. Changes in the enrichment of dissolved inorganic nutrients in the coastal waters of the Mexican Caribbean, influenced by submarine groundwater discharges 2016-2019. MARINE POLLUTION BULLETIN 2022; 185:114308. [PMID: 36351354 DOI: 10.1016/j.marpolbul.2022.114308] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 10/20/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
The resident and tourist population in the Mexican Caribbean has grown exponentially, increasing the availability of dissolved inorganic nutrients in coastal waters through submarine groundwater discharge (SGD). Recently, a new massive drift of Sargassum spp. has occurred that can provide new organic matter and enrich coastal water with nutrients. In different sites in the Mexican Caribbean, the chemical composition of the water was analyzed, and the δ15N of Thalassia testudinum was determined between 2016 and 2019. Evidence of SGD was observed in Akumal Bay due to high silicate concentrations and its negative correlation with salinity. Seasonal and interannual variation in NH4+ concentration was observed at these sites. In October 2018, SGD contributed ∼70 times more nitrogen and ∼194 times more phosphorus than the decomposition of the pelagic macroalgae Sargassum spp. The δ15N data showed that Akumal Bay received nitrogen of anthropogenic origin and that nitrogen fixation processes or probably assimilation of nitrogen of the leachates of pelagic Sargassum spp were dominant at Mahahual and Xahuayxol.
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Affiliation(s)
- Karla Camacho-Cruz
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, Av. IPN S/N Col. Playa Palo de Sta. Rita, C. P. 23096, La Paz, Baja California Sur, México; El Colegio de la Frontera Sur, Av. Centenario km 5.5, Col. Pacto Obrero, C. P. 77014, Chetumal, Quintana Roo, México
| | - Nestor Rey-Villiers
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, Av. IPN S/N Col. Playa Palo de Sta. Rita, C. P. 23096, La Paz, Baja California Sur, México; Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prolongación Av. Niños Héroes S/N, C. P. 77580, Puerto Morelos, Quintana Roo, México
| | - Ma Concepción Ortiz-Hernández
- El Colegio de la Frontera Sur, Av. Centenario km 5.5, Col. Pacto Obrero, C. P. 77014, Chetumal, Quintana Roo, México.
| | - Paula González-Jones
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, Av. IPN S/N Col. Playa Palo de Sta. Rita, C. P. 23096, La Paz, Baja California Sur, México
| | - René de Jesús Galán-Caamal
- El Colegio de la Frontera Sur, Av. Centenario km 5.5, Col. Pacto Obrero, C. P. 77014, Chetumal, Quintana Roo, México
| | - Miguel Matus-Hernández
- Instituto Nacional de Pesca y Acuacultura, Centro Regional de Investigación Acuícola y Pesquera Guaymas, Calle 20 Sur No. 605, Colonia Cantera, C. P. 85400, Guaymas, Sonora, México
| | - Alberto Sánchez
- Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional, Av. IPN S/N Col. Playa Palo de Sta. Rita, C. P. 23096, La Paz, Baja California Sur, México
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Olguin-Maciel E, Leal-Bautista RM, Alzate-Gaviria L, Domínguez-Maldonado J, Tapia-Tussell R. Environmental impact of Sargassum spp. landings: an evaluation of leachate released from natural decomposition at Mexican Caribbean coast. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:91071-91080. [PMID: 35882736 DOI: 10.1007/s11356-022-22123-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Large volumes of pelagic Sargassum spp. have stranded periodically on the Mexican Caribbean shoreline. The aim of this research was to study the mobility of metals through the leachates released into the environment during the natural decomposition process of Sargassum spp. Fresh Sargassum samples were placed in cone-bed reactors: under laboratory and local environmental conditions. The leachate generated naturally by decomposition in both conditions was recovered periodically and analyses of pH, volume, and metal content were carried out. Sargassum biomass was monitored by electron microscopy, FT-IR, and CHNS analysis. The Sargassum biomass studied presented a C: N ratio of 24.39, making it a potential raw feedstock for biofuels and other value-added products. Calculations performed on leachate production allowed inferring that each ton of fresh Sargassum that decomposes at a controlled temperature of 27 °C can produce 316 L of leachate. This leachate can contain 5.67 g of As and other potentially toxic metals (e.g., B, Al, Cu). At the end of both experiments, the biomass that was incubated for 30 days presented a C: N ratio of 28.86, so it can still be used as raw material for biofuels; however, the Sargassum biomass that remained 180 days in incubation decreased its C:N ratio at 8.45 at this point, it can be considered a waste. The leachate generated during the natural decomposition process of Sargassum on beaches or disposal sites represents a high risk of contamination of the Yucatan Peninsula water system due to the high content of arsenic and the presence of potentially toxic metals.
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Affiliation(s)
- Edgar Olguin-Maciel
- Renewable Energy Unit, Yucatan Center for Scientific Research, 97203, Merida, Mexico
| | | | | | | | - Raul Tapia-Tussell
- Renewable Energy Unit, Yucatan Center for Scientific Research, 97203, Merida, Mexico.
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16
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Molina GA, González-Reyna MA, Loske AM, Fernández F, Torres-Ortiz DA, Estevez M. Weak shock wave-mediated fucoxanthin extraction from Sargassum spp. and its electrochemical quantification. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Luis López-Miranda J, Molina GA, Esparza R, Alexis González-Reyna M, Silva R, Estévez M. Ecofriendly and sustainable Sargassum spp.-based system for the removal of highly used drugs during the COVID-19 pandemic. ARAB J CHEM 2022; 15:104169. [PMID: 35957843 PMCID: PMC9356597 DOI: 10.1016/j.arabjc.2022.104169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/02/2022] [Indexed: 11/19/2022] Open
Abstract
Analgesic consumption increased significantly during the COVID-19 pandemic. A high concentration of this kind of drug is discarded in the urine, reaching the effluents of rivers, lakes, and seas. These medicines have brought serious problems for the flora and, especially, the ecosystems’ fauna. This paper presents the results of removing diclofenac, ibuprofen, and paracetamol in an aqueous solution, using Sargassum spp. from the Caribbean coast. The study consisted of mixing each drug in an aqueous solution with functionalized Sargassum spp in a container under constant agitation. Therefore, this work represents an alternative to solve two of the biggest problems in recent years; first, the reduction of the overpopulation of sargassum through its use for the remediation of the environment. Second is the removal of drug waste used excessively during the COVID-19 pandemic. Liquid samples of the solution were taken at intervals of 10 min and analyzed by fluorescence to determine the concentration of the drug. The sorption capacity for diclofenac, ibuprofen, and paracetamol was 2.46, 2.08, and 1.41 μg/g, corresponding to 98 %, 84 %, and 54 % of removal, respectively. The removal of the three drugs was notably favored by increasing the temperature to 30 and 40 °C, reaching efficiencies close to 100 %. Moreover, the system maintains its effectiveness at various pH values. In addition, the Sargassum used can be reused for up to three cycles without reducing its removal capacity. The wide diversity of organic compounds favors the biosorption of drugs, removing them through various kinetic mechanisms. On the other hand, the Sargassum used in the drugs removal was analyzed by X-ray diffraction, FTIR spectroscopy, TGA analysis, and scanning electron microscopy before and after removal. The results showed an evident modification in the structure and morphology of the algae and demonstrated the presence of the biosorbed drugs. Therefore, this system is sustainable, simple, economical, environmentally friendly, highly efficient, and scalable at a domestic and industrial level that can be used for aquatic remediation environments.
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Affiliation(s)
- J Luis López-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Gustavo A Molina
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Marlen Alexis González-Reyna
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
| | - Rodolfo Silva
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico
| | - Miriam Estévez
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico
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Machado CB, Maddix GM, Francis P, Thomas SL, Burton JA, Langer S, Larson TR, Marsh R, Webber M, Tonon T. Pelagic Sargassum events in Jamaica: Provenance, morphotype abundance, and influence of sample processing on biochemical composition of the biomass. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:152761. [PMID: 35007571 DOI: 10.1016/j.scitotenv.2021.152761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/09/2021] [Accepted: 12/25/2021] [Indexed: 06/14/2023]
Abstract
Pelagic Sargassum species have been known for centuries in the Sargasso Sea of the North Atlantic Ocean. In 2011, a new area concentrating high biomass of these brown algae started developing in the Tropical Atlantic Ocean. Since then, massive and recurrent Sargassum influxes have been reported in the Caribbean and off the coast of Western Africa. These Sargassum events have a major negative impact on coastal ecosystems and nearshore marine life, and affect socio-economic sectors, including public health, coastal living, tourism, fisheries, and maritime transport. Despite recent advances in the forecasting of Sargassum events, and elucidation of the seaweed composition, many knowledge gaps remain, including morphotype abundance during Sargassum events, drift of the seaweeds in the months prior to stranding, and influence of sample processing methods on biomass biochemical composition. Using seaweeds harvested on the coasts of Jamaica in summer of 2020, we observed that S. fluitans III was the most abundant morphotype at different times and sampling locations. No clear difference in the geographical origin, or provenance, of the Sargassum mats was observed. The majority of Sargassum backtracked from both north and south of Jamaica experienced ambient temperatures of around 27 °C and salinity in the range of 34-36 psu before stranding. We also showed that cheap (sun) compared to expensive (freeze) drying techniques influence the biochemical composition of biomass. Sun-drying increased the proportion of phenolic compounds, but had a deleterious impact on fucoxanthin content and on the quantities of monosaccharides, except for mannitol. Effects on the content of fucose containing sulfated polysaccharides depended on the method used for their extraction, and limited variation was observed in ash, protein, and fatty acid content within most of the sample locations investigated. These observations are important for the storage and transport of the biomass in the context of its valorisation.
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Affiliation(s)
- Carla Botelho Machado
- Centre for Novel Agricultural Products (CNAP), Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Gina-Marie Maddix
- Centre for Marine Sciences, 1 Anguilla Close, University of the West Indies, Mona, Kingston 7, Jamaica
| | - Patrice Francis
- Centre for Marine Sciences, 1 Anguilla Close, University of the West Indies, Mona, Kingston 7, Jamaica
| | - Shanna-Lee Thomas
- Discovery Bay Marine Laboratory, Queen's Highway, Discovery Bay, Jamaica
| | - Jodi-Ann Burton
- Port Royal Marine Laboratory, Port Royal, Kingston 1, Jamaica
| | - Swen Langer
- Metabolomics and Proteomics Lab, Bioscience Technology Facility, Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Tony R Larson
- Metabolomics and Proteomics Lab, Bioscience Technology Facility, Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Robert Marsh
- School of Ocean and Earth Science, University of Southampton Waterfront Campus, National Oceanography Centre, European Way, Southampton, SO14 3ZH, United Kingdom
| | - Mona Webber
- Centre for Marine Sciences, 1 Anguilla Close, University of the West Indies, Mona, Kingston 7, Jamaica
| | - Thierry Tonon
- Centre for Novel Agricultural Products (CNAP), Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom.
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Ortega-Flores PA, Serviere-Zaragoza E, De Anda-Montañez JA, Freile-Pelegrín Y, Robledo D, Méndez-Rodríguez LC. Trace elements in pelagic Sargassum species in the Mexican Caribbean: Identification of key variables affecting arsenic accumulation in S. fluitans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150657. [PMID: 34597566 DOI: 10.1016/j.scitotenv.2021.150657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Since 2014, the Mexican Caribbean beaches have received massive influxes of the brown seaweed Sargassum (S. fluitans III, S. natans I and S. natans VIII), causing serious ecological and economic effects. Concentrations of arsenic (As), cadmium (Cd), copper (Cu), iron (Fe), lead (Pb), and zinc (Zn) were determined over an annual cycle in pelagic Sargassum species from massive influxes into the Mexican Caribbean. The contribution of trace elements, polysaccharides (alginate and fucoidans), and their main functional groups (uronic acids and sulfate) to arsenic content in Sargassum fluitans - the most abundant species in the Sargassum influx - is discussed. Arsenic was recorded in all samples, yielding mean concentrations of 74.2 ± 2.84 mg kg-1. Significant differences were found between species for As, Cu, Fe, and Pb, but not for Cd and Zn; also, S. fluitans showed significant differences in metal content between seasons for all elements, as well as in alginate and uronic acids from fucoidan. The season of the year, copper, iron, uronic acids, and sulfate content in fucoidan were the main variables associated with arsenic accumulation in S. fluitans as evidenced with a Generalized Linear Model. Arsenic content in Sargassum biomass exceeded the maximum allowable level in the rainy season; therefore, the content of this trace element should be carefully monitored for safe usage of Sargassum biomass.
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Affiliation(s)
- Paulina Annette Ortega-Flores
- Centro de Investigaciones Biológicas del Noroeste S.C (CIBNOR), Calle IPN 195, La Paz, Baja California Sur 23096, Mexico
| | - Elisa Serviere-Zaragoza
- Centro de Investigaciones Biológicas del Noroeste S.C (CIBNOR), Calle IPN 195, La Paz, Baja California Sur 23096, Mexico
| | - Juan Antonio De Anda-Montañez
- Centro de Investigaciones Biológicas del Noroeste S.C (CIBNOR), Calle IPN 195, La Paz, Baja California Sur 23096, Mexico
| | - Yolanda Freile-Pelegrín
- Departamento de Recursos del Mar, CINVESTAV-IPN, Unidad Mérida, Apdo. Postal 73-Cordemex, Mérida, Yucatán 97310, Mexico
| | - Daniel Robledo
- Departamento de Recursos del Mar, CINVESTAV-IPN, Unidad Mérida, Apdo. Postal 73-Cordemex, Mérida, Yucatán 97310, Mexico
| | - Lia Celina Méndez-Rodríguez
- Centro de Investigaciones Biológicas del Noroeste S.C (CIBNOR), Calle IPN 195, La Paz, Baja California Sur 23096, Mexico.
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Martínez-Molina EC, Freile-Pelegrín Y, Ovando-Chacón SL, Gutiérrez-Miceli FA, Ruiz-Cabrera MÁ, Grajales-Lagunes A, Luján-Hidalgo MC, Abud-Archila M. Development and characterization of alginate-based edible film from Sargassum fluitans incorporated with silver nanoparticles obtained by green synthesis. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-021-01156-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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López-Miranda JL, Molina GA, Esparza R, González-Reyna MA, Silva R, Estévez M. Green Synthesis of Homogeneous Gold Nanoparticles Using Sargassum spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes. TOXICS 2021; 9:280. [PMID: 34822671 PMCID: PMC8623730 DOI: 10.3390/toxics9110280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 11/24/2022]
Abstract
Sargassum species-based extracts were used to carry out the synthesis of homogeneous gold nanoparticles. Various techniques were used to determine the characteristics and composition of the nanoparticles. The UV-Vis results showed that the 50% water/ethanol extract had the most reducing agents and stabilizers. Therefore, this type of extract was used to synthesize nanoparticles and for their subsequent characterization. Crystallinity and crystal size were evaluated using X-ray diffraction. Size and morphology were analyzed using scanning electron microscopy, showing that the gold nanoparticles were mostly spherical, with a size range of 15-30 nm. The catalytic activity of the gold nanoparticles was evaluated through the degradation of organic dyes: methylene blue, methyl orange, and methyl red. The degradation rates were different, depending on the nature of each dye, the simplest to degrade was methylene blue and methyl red was the most difficult to degrade. The results indicated that the use of Sargassum spp. for the synthesis of gold nanoparticles has potential in the remediation of water that is contaminated with organic dyes. Moreover, given the recent serious environmental and economic problems caused by the overpopulation of Sargassum spp. in the Mexican Caribbean, the findings hold promise for their practical and sustainable use in the synthesis of nanomaterials.
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Affiliation(s)
- J. Luis López-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (G.A.M.); (R.E.); (M.A.G.-R.)
| | - Gustavo A. Molina
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (G.A.M.); (R.E.); (M.A.G.-R.)
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (G.A.M.); (R.E.); (M.A.G.-R.)
| | - Marlen Alexis González-Reyna
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (G.A.M.); (R.E.); (M.A.G.-R.)
| | - Rodolfo Silva
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico;
| | - Miriam Estévez
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico; (J.L.L.-M.); (G.A.M.); (R.E.); (M.A.G.-R.)
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