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Assessment of the photoprotective potential and structural characterization of secondary metabolites of Antarctic fungus Arthrinium sp
Arch Microbiol. 2023 Dec 23;206(1):35. doi: 10.1007/s00203-023-03756-w.ABSTRACTInterest in Antarctic fungi has grown due to their resilience in harsh environments, suggesting the presence of valuable compounds from its organisms, such as those presenting photoprotective potential, since this environment suffers the most dangerous UV exposure in the world. Therefore, this research aimed to assess the photoprotective potential of compounds from sustainable marine sources, specifically seaweed-derived fungi from Antarctic continent. These studies led to discovery of photoprotective and antioxidant properties of metabolites fr...
Source: Archives of Microbiology - December 23, 2023 Category: Microbiology Authors: Ana Carolina Jord ão Gustavo Souza Dos Santos Thaiz Rodrigues Teixeira Ana J úlia Pasuch Gluzezak Clarissa Bechuate de Souza Azevedo Karina de Castro Pereira Ludmilla Tonani Lorena Rigo Gaspar M árcia Regina von Zeska Kress Pio Colepicolo Hosana Maria Source Type: research

Exploring antimicrobial and biocompatible applications of eco-friendly fluorescent carbon dots derived from fast-food packaging waste transformation
Environ Res. 2023 Dec 12:117888. doi: 10.1016/j.envres.2023.117888. Online ahead of print.ABSTRACTIn the face of escalating environmental concerns, particularly the pervasive issue of non-biodegradable fast-food packaging waste, this study introduces a ground-breaking solution that not only addresses waste management but also advances biomedical technology. Utilizing the underexploited resource of Fucoidan, a sulfated polysaccharide from brown algae, we have innovatively transformed fast-food packaging waste into eco-friendly fluorescent carbon dots (FPCDs). These FPCDs were meticulously characterized through advanced tech...
Source: Environmental Research - December 14, 2023 Category: Environmental Health Authors: Natesan Thirumalaivasan Sonalismita Mahapatra Ganesan Ramanathan Anuj Kumar Thandavamoorthy Raja Muthumareeswaran Muthu Ramamoorthy Bidhan Pandit Saravanan Pandiaraj Santhiyagu Prakash Source Type: research

Optimization of fucoidan recovery by ultrasound-assisted enzymatic extraction from South African kelp, Ecklonia maxima
Ultrason Sonochem. 2023 Nov 29;101:106710. doi: 10.1016/j.ultsonch.2023.106710. Online ahead of print.ABSTRACTFucoidan, a sulphated polysaccharide, is found exclusively in brown seaweeds and has been reported to possess a wide range of biological functionalities. Fucoidans are found within the cell wall of brown seaweeds, which is composed of recalcitrant cellulose and hemicellulose. This hampers the recovery of fucoidans. In addition, fucoidans are found within a network of viscous hydrocolloids, alginates, further complicating their recovery. Traditionally, the hot water extraction method is used to recover fucoidans fro...
Source: Ultrasonics Sonochemistry - December 3, 2023 Category: Chemistry Authors: Zwonaka Mapholi Neill Jurgens Goosen Source Type: research

Viruses, Vol. 15, Pages 2331: Phaeoviruses Present in Cultured and Natural Kelp Species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway
nn Alne Hoell Phaeoviruses (Phycodnaviridae) are large icosahedral viruses in the phylum Nucleocytoviricota with dsDNA genomes ranging from 160 to 560 kb, infecting multicellular brown algae (Phaeophyceae). The phaeoviral host range is broader than expected, not only infecting algae from the Ectocarpales but also from the Laminariales order. However, despite phaeoviral infections being reported globally, Norwegian kelp species have not been screened. A molecular analysis of cultured and wild samples of two economically important kelp species in Norway (Saccharina latissima and Laminaria hyperborea) revealed that phaeov...
Source: Viruses - November 28, 2023 Category: Virology Authors: Eliana Ruiz Mart ínez Dean A. Mckeown Declan C. Schroeder Gunnar Thuestad Kjersti Sj øtun Ruth-Anne Sandaa Aud Larsen Ingunn Alne Hoell Tags: Article Source Type: research

Orally administrated fucoidan and its low-molecular-weight derivatives are absorbed differentially to alleviate coagulation and thrombosis
Int J Biol Macromol. 2023 Nov 16:128092. doi: 10.1016/j.ijbiomac.2023.128092. Online ahead of print.ABSTRACTThrombosis is a serious threat to human health and life. Fucoidan, a sulfated polysaccharide from brown algae, could prevent coagulation and thrombus after intravenous administration. However, more efforts are still needed to develop its oral agent. In the present study, the absorption and excretion of fucoidan (90.8 kDa) and its degradation products, Dfuc1 (19.2 kDa) and Dfuc2 (5.5 kDa), were determined by HPLC-MS/MS after acid degradation and 1-phenyl-3-methyl-5-pyrazolone derivatization, and their anticoagulation ...
Source: International Journal of Biological Macromolecules - November 18, 2023 Category: Biochemistry Authors: Xiaona Sun Chunhong Yan Yinghuan Fu Chunqing Ai Jingran Bi Wei Lin Shuang Song Source Type: research

Molecules, Vol. 28, Pages 7596: Fractionation of Arctic Brown Algae (Fucus vesiculosus) Biomass Using 1-Butyl-3-methylimidazolium-Based Ionic Liquids
ry S. Kosyakov Arctic brown algae are considered a promising industrial-scale source of bioactive sub-stances as polysaccharides, polyphenols, and low-molecular secondary metabolites. Conventional technologies for their processing are focused mainly on the isolation of polysaccharides and involve the use of hazardous solvents. In the present study a &ldquo;green&rdquo; approach to the fractionation of brown algae biomass based on the dissolution in ionic liquids (ILs) with 1-butil-3-methylimidazolium (bmim) cation with further sequential precipitation of polysaccharides and polyphenols with acetone and ...
Source: Molecules - November 14, 2023 Category: Chemistry Authors: Artyom V. Belesov Daria A. Lvova Danil I. Falev Ilya I. Pikovskoi Anna V. Faleva Nikolay V. Ul ’yanovskii Anton V. Ladesov Dmitry S. Kosyakov Tags: Article Source Type: research

Evaluation of Antibiofilm and Antiquorum Sensing Activities of Fucoidan Characterized from Padina boryana against Nosocomial Pathogens
Appl Biochem Biotechnol. 2023 Nov 10. doi: 10.1007/s12010-023-04767-5. Online ahead of print.ABSTRACTModern functional chemicals that can be employed in biotechnology, pharmaceutics, and food science are a sustainable source to be found in seaweeds. The bioactivity of the majority of these marine compounds has received scant research. Fucoidan is a highly sulfated polysaccharide with a range of bioactivities, including an antipathogenic effect. There is still much to learn about the relationship between fucoidan structure and its function in pathogen infections. By employing microwave and probe sonication to create crude f...
Source: Applied Biochemistry and Biotechnology - November 10, 2023 Category: Biochemistry Authors: Geetha Mani Ishwarya Rajendran Tharani Jayakumar Arunkumar Mani Rajalakshmi Govindaraju Sangeetha Dhayalan Source Type: research

Algal outbreaks around the world are crowding out corals
About 11 years ago, Peter Edmunds noticed small dark red splotches on the reefs off the Virgin Islands that he’d been surveying for decades. The culprits, red algae that form a crust on underwater surfaces such as coral, were previously known to grow only in small patches, tucked away in crevices among the reefs. Since he first noticed them, they’ve “just gone gangbusters,” says the marine biologist from California State University, Northridge. And not just at his study sites. Edmunds and colleagues report today in Current Biology that these algae are spreading rapidly in the Caribbean Sea ...
Source: Science of Aging Knowledge Environment - November 6, 2023 Category: Geriatrics Source Type: research

Multi-pollutant biosorption of organic and inorganic pollutants by brown algae waste from alginate production: batch and fixed-bed investigation
Environ Sci Pollut Res Int. 2023 Nov 4. doi: 10.1007/s11356-023-30511-x. Online ahead of print.ABSTRACTThe reuse of biomass waste has been gaining attention in adsorption processes to remove pollutants of emerging concern from water and wastewater. In this work, the potential of alginate-extracted macro-algae waste to uptake synthetic dyes and metal cations was evaluated in comparison with raw algae. In affinity assays, both materials were able to remove metal cations and cationic dyes up to maximum rates, and no significant removal was observed for an anionic dye in an acidic medium. Competition was observed in multi-comp...
Source: Environmental Science and Pollution Research International - November 4, 2023 Category: Environmental Health Authors: Welenilton Jos é do Nascimento Júnior Giovane Henrique de Aguiar Renan Costa Massarelli Richard Landers Melissa Gurgel Adeodato Vieira Mauricio Alves da Motta Sobrinho Source Type: research

The Atlantic is being ringed with tiny sensors in an ambitious effort to track climate change
Viana do Castelo, Portugal— One wrong move, and the sea-battered granite boulders lining North Beach here can break an ankle. But this summer, marine biologist Fernando Lima hopped among the algae-covered rocks like a child playing hopscotch. He eventually settled next to a suitcase-size boulder that held what he sought: an electronic sensor, just 3 centimeters wide and shaped like a hockey puck, that he and his research team had embedded in the rock the year before. Lima, who works with the Biopolis Association and the Research Centre in Biodiversity and Genetic Resources at the University of Porto,...
Source: Science of Aging Knowledge Environment - November 2, 2023 Category: Geriatrics Source Type: research