9,375 results match your criteria macroalgae


High intakes of iodine among women during pregnancy and the postpartum period has no adverse effect on thyroid function.

Eur J Nutr 2022 Aug 10. Epub 2022 Aug 10.

Department of Food Science and Nutrition, Catholic University of Korea, 43 Jibong-ro Wonmi-gu, Bucheon-si, 14662, Republic of Korea.

Purpose: Given the high consumption of seaweed soup by pregnant and lactating Korean women, concerns have been raised about excessive iodine intake. We evaluated the effects of maternal iodine intake on maternal thyroid function and birth outcomes. We also evaluated iodine intake via seaweed soup during late pregnancy and the early postpartum period. Read More

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Potential Contribution to Dietary Reference Intake (DRI) of Agar Extracted from Gelidium latifolium (Gelidiaceae, Rhodophyta) as a Mineral Source.

Biol Trace Elem Res 2022 Aug 9. Epub 2022 Aug 9.

Faculty of Fisheries and Aquatic Sciences, Recep Tayyip Erdogan University, 53100, Rize, Turkey.

Ca, Na, Mg, K, P, Fe, Zn, Mn, V, Cr, Ni, Cu, Mo, and Se were determined in agar obtained seasonally from Gelidium latifolium in coast of Black Sea, using the inductively coupled plasma mass spectroscopy. Also, the potential contribution of the agar to the dietary reference intakes (DRIs) was evaluated according to the Basic Nutritional Requirements Guideline released by the Institute of Medicine and the Official Journal of the European Union. The results show that agar extracted from G. Read More

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Major lipophilic pigments in Atlantic seaweeds as valuable food ingredients: Analysis and assessment of quantification methods.

Food Res Int 2022 Sep 8;159:111609. Epub 2022 Jul 8.

IRTA-Food Safety and Functionality Programme. Finca Camps i Armet s/n, 17121 Monells, Girona, Spain. Electronic address:

Current trends towards the use of ingredients from natural origin in food, cosmetic and pharmaceutical industry, place macroalgae as a good reservoir of novel compounds. Among them, lipophilic major pigments such as chlorophylls and fucoxanthin, are of great interest because of their multiple applications as bioactive compounds and dyes. In this work, a mid-polarity medium was used to extract pigments from twenty-four species from North coast of Spain, including brown (Phaeophyceae) and red macroalgae (Rhodophyta). Read More

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September 2022

Meat alternatives: A proofed commodity?

Adv Food Nutr Res 2022 7;101:213-236. Epub 2022 Mar 7.

Food Quality and Sensory Science Department, Teagasc Food Research Centre, Ashtown, Dublin, Ireland.

The demand for meat alternatives has been growing in the recent years and it is expected to keep expanding. Motives driving this growth are diverse and are mostly related to the health and ethical concerns over animal welfare and the possible impact of meat production on the environment. Meat alternatives are not anymore a niche market (i. Read More

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The complete mitochondrial genome of (Bangiales, Rhodophyta).

Mitochondrial DNA B Resour 2022 1;7(8):1411-1412. Epub 2022 Aug 1.

Jeonnam Institute of Natural Resources Research, Jangheung-gun, Jeollanam-do, Republic of Korea.

(Kjellman) L.-E. Yang & J. Read More

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Mercury release behaviors of Guizhou bituminous coal during co-pyrolysis: Influence of chlorella.

J Environ Sci (China) 2022 Sep 14;119:23-32. Epub 2022 Jan 14.

College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China. Electronic address:

Co-pyrolysis of coal and seaweed can not only effectively decrease the carbon footprint but also improve the quality and output of coal pyrolysis products, however, the influence of seaweed on thermal releasing behaviors of mercury during co-pyrolysis process are still unclear. In this work, the chlorella and Guizhou bituminous coal were mixed and used to reveal the mercury release behavior during co-pyrolysis by the temperature programmed pyrolysis experiments, thermogravimetric and differential thermogravimetric analysis (TG-DTG) and thermogravimetry-mass spectrometry (TG-MS) methods, offering a sufficient explanation on the control technology of mercury pollutants in co-pyrolysis. The results exhibited that a large amount of reducing gases such as CO, H and HO were generated in chlorella at the temperature range of 100-500°C, which was favorable for the transformation from oxidized mercury to elemental mercury, thus remarkably increased the release of elemental mercury in the raw coal sample. Read More

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September 2022

A global dataset of seaweed net primary productivity.

Sci Data 2022 Aug 6;9(1):484. Epub 2022 Aug 6.

UWA Oceans Institute and School of Biological Sciences, University of Western Australia, Crawley, Western Australia, 6009, Australia.

Net primary productivity (NPP) plays a pivotal role in the global carbon balance but estimating the NPP of underwater habitats remains a challenging task. Seaweeds (marine macroalgae) form the largest and most productive underwater vegetated habitat on Earth. Yet, little is known about the distribution of their NPP at large spatial scales, despite more than 70 years of local-scale studies being scattered throughout the literature. Read More

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Metal contamination of intertidal sediment and macroalgae in an area impacted by paint from abandoned boats.

Authors:
Andrew Turner

Mar Pollut Bull 2022 Aug 3;182:113958. Epub 2022 Aug 3.

School of Geography, Earth and Environmental Sciences, University of Plymouth University, Drake Circus, Plymouth PL4 8AA, UK. Electronic address:

Metals commonly employed in boat paint (Ba, Cr, Cu, Pb, Sn and Zn) have been determined in 63-μm-fractionated intertidal sediments and in Ulva lactuca and Fucus vesiculosus sampled in the vicinity of abandoned vessels. Metal concentrations in sediment were elevated but highly variable, both between sites and amongst replicates from the same site (e.g. Read More

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Fucoidan-based nanomaterial and its multifunctional role for pharmaceutical and biomedical applications.

Crit Rev Food Sci Nutr 2022 Aug 5:1-27. Epub 2022 Aug 5.

School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.

Fucoidans are promising sulfated polysaccharides isolated from marine sources that have piqued the interest of scientists in recent years due to their widespread use as a bioactive substance. Bioactive coatings and films, unsurprisingly, have seized these substances to create novel, culinary, therapeutic, and diagnostic bioactive nanomaterials. The applications of fucoidan and its composite nanomaterials have a wide variety of food as well as pharmacological properties, including anti-oxidative, anti-inflammatory, anti-cancer, anti-thrombic, anti-coagulant, immunoregulatory, and anti-viral properties. Read More

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Fabrication and characterization of bio-nanocomposite films using κ-Carrageenan and Kappaphycus alvarezii seaweed for multiple industrial applications.

Int J Biol Macromol 2022 Aug 1;219:138-149. Epub 2022 Aug 1.

National Institute of Ocean Technology (NIOT), Ministry of Earth Sciences (Govt. of India), Chennai 600 100, Tamil Nadu, India. Electronic address:

In the present study, the whole seaweed from Kappaphycus alvarezii (containing carrageenan) was used for preparation of bio-nanocomposite films by blending with metal oxide nanoparticles such as zinc oxide (ZnONPs), cupric oxide (CuONPs) and silicon dioxide (SiONPs) for multiple applications, and their properties were compared with standard refined κ-Carrageenan (commercial grade). Simultaneously, the antibacterial activity and biodegradation profile of the prepared bio-nanocomposite film were also studied. The incorporation of nanoparticles into the bioplastic film matrices altered the surface morphology, increased the roughness and significantly (p < 0. Read More

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The relative effects of interspecific and intraspecific diversity on microplastic trapping in coastal biogenic habitats.

Sci Total Environ 2022 Aug 1;848:157771. Epub 2022 Aug 1.

Department of Zoology and Entomology, Rhodes University, Grahamstown 6140, South Africa; Normandie Université, UNICAEN, Laboratoire Biologie des Organismes et Ecosystèmes Aquatiques, UMR 8067 BOREA (CNRS, MNHN, UPMC, UCBN, IRD-207), CS 14032, 14000 Caen, France.

Our understanding of how anthropogenic stressors such as climate change and plastic pollution interact with biodiversity is being widened to include diversity below the species level, i.e., intraspecific variation. Read More

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Kelp carbon sink potential decreases with warming due to accelerating decomposition.

PLoS Biol 2022 Aug 4;20(8):e3001702. Epub 2022 Aug 4.

Institute of Marine Research, His, Norway.

Cycling of organic carbon in the ocean has the potential to mitigate or exacerbate global climate change, but major questions remain about the environmental controls on organic carbon flux in the coastal zone. Here, we used a field experiment distributed across 28° of latitude, and the entire range of 2 dominant kelp species in the northern hemisphere, to measure decomposition rates of kelp detritus on the seafloor in relation to local environmental factors. Detritus decomposition in both species were strongly related to ocean temperature and initial carbon content, with higher rates of biomass loss at lower latitudes with warmer temperatures. Read More

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Physicochemical properties of iodine and selenium biofortified Sparus aurata and Cyprinus carpio during frozen storage.

Food Chem 2022 Jul 26;397:133780. Epub 2022 Jul 26.

Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere, I.P. (IPMA), Lisbon, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal.

Fish biofortification with natural ingredients like iodine-rich macroalgae and selenized-yeast is an excellent strategy to enhance the nutritional quality of farmed fish. This study aimed to assess the effect of frozen storage during 12-months on physicochemical quality of biofortified seabream (Sparus aurata) and carp (Cyprinus carpio). Frozen storage reduced iodine content in biofortified seabream fillets (17%), as well as selenium content in biofortified carp fillets (24%). Read More

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Foliar spray of commercial seaweed and amino acid-derived biostimulants promoted phytoremediation potential and salinity stress tolerance in halophytic grass, .

Int J Phytoremediation 2022 Aug 1:1-15. Epub 2022 Aug 1.

Core Research Facilities (CRF), Isfahan University of Medical Sciences, Isfahan, Iran.

Plants pretreatment with various chemicals has often been used to diminish salinity stress impact on plants. An experiment was carried out to determine the effect of foliar spray of two commercially available biostimulants (Algabon [0.5 g/l] and Bonamid [2 g/l]) on the growth and tolerance of halophytic grass, under non-salinity condition (NSC) and salinity condition (SC). Read More

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Algal volatiles - the overlooked chemical language of aquatic primary producers.

Biol Rev Camb Philos Soc 2022 Aug 1. Epub 2022 Aug 1.

Department River Ecology, Helmholtz Centre of Environmental Research - UFZ, Brückstrasse 3a, 39114, Magdeburg, Germany.

Volatiles are important 'infochemicals' that play a crucial role in structuring life on our planet, fulfilling diverse functions in natural and artificial systems. Algae contribute significant quantities to the global budget of volatiles, but the ecological roles of aquatic volatiles are not well understood. In this review, we discuss the current knowledge of volatile compounds from freshwater and marine microalgae and marine macroalgae, with a focus on their ecological roles. Read More

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Sulfated Polysaccharides Derived from and Their Potential of Antioxidant, Antimicrobial, and Anticoagulant Activities with Docking.

Evid Based Complement Alternat Med 2022 20;2022:3715806. Epub 2022 Jul 20.

Ethnopharmacology and Algal Biotechnology Division, Department of Botany, School of Life Sciences, Periyar University, Salem 636011, Tamil Nadu, India.

Carrageenan, a sulfated polysaccharide, was produced by certain species of marine red seaweeds, which have been used as a significant source of food, feed, and antibiotic agent throughout history due to their alleged human health benefits. The present study aimed to derive the polysaccharides from and describe the biological applications. Carrageenan was characterized by FT-IR, C-NMR, AFM, and their antimicrobial, antioxidant, and anticoagulant capabilities; furthermore, the larvicidal effect of methanol extract was generated from the seaweed against larvae at various concentrations. Read More

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Pollinators of the sea: A discovery of animal-mediated fertilization in seaweed.

Science 2022 07 28;377(6605):528-530. Epub 2022 Jul 28.

International Research Laboratory (IRL) 3614, Evolutionary Biology and Ecology of Algae, Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, CS 90074, Place Georges Teissier, 29688 Roscoff, France.

The long-held belief that animal-mediated pollination is absent in the sea has recently been contradicted in seagrasses, motivating investigations of other marine phyla. This is particularly relevant in red algae, in which female gametes are not liberated and male gametes are not flagellated. Using experiments with the isopod and the red alga , we demonstrate that biotic interactions dramatically increase the fertilization success of the alga through animal transport of spermatia on their body. Read More

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Nearshore marine biodiversity of Osa Peninsula, Costa Rica: Where the ocean meets the rainforest.

PLoS One 2022 28;17(7):e0271731. Epub 2022 Jul 28.

Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San José, Costa Rica.

Osa Peninsula in remote southwest Costa Rica harbors 2.5% of global terrestrial biodiversity in only 1,200 km2 and has the largest remaining tract of Pacific lowland wet forest in Mesoamerica. However, little is known about the marine ecosystems of this diverse region. Read More

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Stereoselective total synthesis of (-)-thallusin for bioactivity profiling.

Angew Chem Int Ed Engl 2022 Jul 28. Epub 2022 Jul 28.

Friedrich-Schiller-Universität Jena: Friedrich-Schiller-Universitat Jena, Institute of Organic and Macromolecular Chemistry, Humboldtstr. 10, 07743, Jena, GERMANY.

Chemical mediators are key compounds for controlling symbiotic interactions in the environment. Here, we disclose a fully stereoselective total synthesis of the algae differentiation factor (-)-thallusin that utilizes unprecedented 6- endo -cyclization chemistry and effective late-stage sp 2 -sp 2 couplings using non-toxic reagents. An EC 50 of 4. Read More

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Green Synthesis of Zinc Oxide Nanoparticles Using Red Seaweed for the Elimination of Organic Toxic Dye from an Aqueous Solution.

Materials (Basel) 2022 Jul 26;15(15). Epub 2022 Jul 26.

National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt.

This study aims to produce green zinc oxide nanoparticles (ZnO-NPs) derived from red seaweed () and evaluate their potential to absorb Ismate violet 2R (IV2R) ions from an aqueous solution. UV-vis spectrophotometry, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and a Brunauer-Emmett-Teller surface area analysis (BET) were used to analyze the structural, morphological, and optical features of the synthesized nanoparticles. The change in color of the chemical solution revealed the formation of zinc oxide nanoparticles. Read More

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What lies on macroalgal surface: diversity of polysaccharide degraders in culturable epiphytic bacteria.

AMB Express 2022 Jul 27;12(1):98. Epub 2022 Jul 27.

Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente (DeFENS), Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy.

Macroalgal surface constitutes a peculiar ecological niche and an advantageous substratum for microorganisms able to degrade the wide diversity of algal glycans. The degrading enzymatic activities of macroalgal epiphytes are of paramount interest for the industrial by-product sector and biomass resource applications. We characterized the polysaccharide hydrolytic profile of bacterial isolates obtained from three macroalgal species: the red macroalgae Asparagopsis taxiformis and Sphaerococcus coronopifolius (Rhodophyceae) and the brown Halopteris scoparia (Phaeophyceae), sampled in South Portugal. Read More

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Fluorescein Derivative Immobilized Optical Hydrogels: Fabrication and Its Application for Detection of HO.

Polymers (Basel) 2022 Jul 26;14(15). Epub 2022 Jul 26.

School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.

A novel fluorescein-based probe was developed for detecting HO. Modified by 2-Bromomethylphenylboronic acid pinacol ester, is a Fluorescein derivative with eminent photostability and remarkable HO sensitivity and selectivity. was utilized to synthesize hydrogel sensors in the manner of guest-host interaction by taking advantage of its aforementioned features. Read More

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The Effect of on Metabolic Syndrome: A Systematic Review of Its Efficacy and Mechanism of Action.

Nutrients 2022 Jul 25;14(15). Epub 2022 Jul 25.

College of Korean Medicine, Kyung Hee University, Seoul 05253, Korea.

Metabolic syndrome (MetS) is a medical condition characterized by abdominal obesity, insulin resistance, high blood pressure, and hyperlipidemia. An increase in the incidence of MetS provokes an escalation in health care costs and a downturn in quality of life. However, there is currently no cure for MetS, and the absence of immediate treatment for MetS has prompted the development of novel therapies. Read More

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Association between Obesity and Intake of Different Food Groups among Japanese with Type 2 Diabetes Mellitus-Japan Diabetes Clinical Data Management Study (JDDM68).

Nutrients 2022 Jul 24;14(15). Epub 2022 Jul 24.

Department of Hematology, Endocrinology and Metabolism, Faculty of Medicine, Niigata University, Niigata 951-8510, Japan.

Background: We investigated the association between various food groups and obesity in Japanese patients with type 2 diabetes.

Methods: 2070 patients with type 2 diabetes who attended 26 diabetes clinics throughout Japan were analyzed and were divided into obese and non-obese groups. Intakes of food groups determined by a food frequency questionnaire were compared. Read More

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Use of Biostimulants as a New Approach for the Improvement of Phytoremediation Performance-A Review.

Plants (Basel) 2022 Jul 27;11(15). Epub 2022 Jul 27.

Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy.

Environmental pollution is one of the most pressing global issues, and it requires priority attention. Environmental remediation techniques have been developed over the years and can be applied to polluted sites, but they can have limited effectiveness and high energy consumption and costs. Bioremediation techniques, on the other hand, represent a promising alternative. Read More

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Isolation and Characterization of Efficient Active Compounds Using High-Performance Centrifugal Partition Chromatography (CPC) from Anti-Inflammatory Activity Fraction of in South Africa.

Mar Drugs 2022 Jul 23;20(8). Epub 2022 Jul 23.

National Marine Biodiversity Institute of Korea, 75, Jangsan-ro 101 gil, Janghang-eup, Seocheon 33662, Korea.

is a brown seaweed, which is abundantly distributed in South Africa. This study investigated an efficient approach using high-performance centrifugal partition chromatography (HPCPC), which has been successfully developed for the isolation and purification of phlorotannins, eckmaxol, and dieckol from the ethyl acetate fraction of (EEM). We evaluated EEM for its inhibitory effect against lipopolysaccharide (LPS)-induced inflammatory responses in zebrafish embryos. Read More

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Sulfated Glucan from the Green Seaweed Inhibits Adipogenesis through Suppression of Adipogenic and Lipogenic Key Factors.

Mar Drugs 2022 Jul 23;20(8). Epub 2022 Jul 23.

Laboratory of Molecular and Genomic Biology, Department of Biology and Genetics, Center of Biosciences, Federal University of Rio Grande do Norte, Natal 59072-900, RN, Brazil.

Sulfated polysaccharides (SPS) from seaweeds have great biochemical and biotechnological potential. This study aimed to investigate the effect of SPS isolated from the seaweed on adipogenic differentiation as a possible alternative treatment for obesity. The SPS-rich extract from the seaweed was fractioned into three SPS-rich fractions (F0. Read More

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Depolymerized Fractions of Sulfated Galactans Extracted from and Their Antibacterial Activity against and .

Mar Drugs 2022 Jul 23;20(8). Epub 2022 Jul 23.

Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.

Various seaweed sulfated polysaccharides have been explored for antimicrobial application. This study aimed to evaluate the antibacterial activity of the native sulfated galactans (NSG) and depolymerized fractions against the marine pathogenic bacteria and . NSG was hydrolyzed in different concentrations of HO to generate sulfated galactans degraded fractions (SGF). Read More

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Optimisation of Vitamin B12 Extraction from Green Edible Seaweed () by Applying the Central Composite Design.

Molecules 2022 Jul 12;27(14). Epub 2022 Jul 12.

Department of Pharmacy Practice, Faculty of Pharmacy, Airlangga University, Surabaya 60115, Indonesia.

Vitamin B12, only found naturally in animal-based foods, is essential for brain functions and various chemical reactions in the human body. Insufficient vitamin B12 leads to vitamin B12 deficiency, common among strict vegetarians due to their limited intake of animal-based foods. Nevertheless, extensive studies have demonstrated that macroalgae, specifically the species, are rich in vitamin B12 and could be further exploited in future dietary applications. Read More

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Current Insights into the Molecular Mode of Action of Seaweed-Based Biostimulants and the Sustainability of Seaweeds as Raw Material Resources.

Int J Mol Sci 2022 Jul 11;23(14). Epub 2022 Jul 11.

Center of Plant Systems Biology, 139 Ruski Blvd., 4000 Plovdiv, Bulgaria.

Natural biostimulants, such as seaweed extracts, can stimulate plant growth and development in both model and crop plants. Due to the increasing demands for their use in agriculture, it is crucial to ensure the sustainability of the sources from which they are produced. Furthermore, some seaweed extracts were recently shown to prime and protect from adverse environmental factors such as drought, salinity and extreme temperatures, as well as from oxidative stress. Read More

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