Article
Biotechnology & Applied Microbiology
P. A. J. van Oort, N. Rukminasari, G. Latama, A. Verhagen, A. K. van der Werf
Summary: The Bio Economic Seaweed Model (BESeM) is a model designed for simulating tropical seaweed cultivation with multiple harvests per year, clonal reproduction and labor intensive activities. It can estimate biomass growth and harvested chemical concentration, and is applicable to different locations and species.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Ameer Ali Kubar, Amjad Ali, Santosh Kumar, Shuhao Huo, Muhammad Wajid Ullah, Khulood Fahad Saud Alabbosh, Muhammad Ikram, Jun Cheng
Summary: This study aims to address the serious foaming problems during industrial microalgal cultivation by studying the foam properties in Arthrospira platensis cultivation. The results show that decreasing the CO2 flow rate and operation temperature can effectively minimize the foaming phenomenon in algal solutions.
BIOENGINEERING-BASEL
(2022)
Article
Environmental Sciences
Vasiliki Patrinou, Alexandra Daskalaki, Dimitris Kampantais, Dimitris C. Kanakis, Christina N. Economou, Dimitris Bokas, Yannis Kotzamanis, George Aggelis, Dimitris V. Vayenas, Athanasia G. Tekerlekopoulou
Summary: This study cultivated Tetraselmis striata, a marine microalgae, in drilling waters with different salinities and optimized the growth substrate. The effects of pH, temperature, photoperiod, and CO2 flow rate on biomass productivity and composition were investigated. The results showed that the strain had better growth in 2.8% drilling waters with the fertilizer Nutri-Leaf and aHCO(3). A pH of 8 and a temperature of 25°C were found to be optimal for high biomass productivity and composition. Continuous illumination and a CO2 flow rate of 10 mL min(-1) were essential for biomass production. The produced biomass had high protein content, suitable amino acids, and high levels of eicosapentaenoic acid (EPA), making it suitable for incorporation into conventional fish feeds. This study also analyzed the impact of functional parameters on nutrient uptake by Tetraselmis.
Article
Fisheries
Mariana Cerca, Amanda Sosa, Fionnuala Murphy
Summary: To address the growing demand for seaweed in a sustainable manner, an interdisciplinary research study investigated the feasibility of scaling up seaweed aquaculture in Ireland. The study identified the responsibilities of emerging enterprises in relation to the natural environment, rural coastal communities, local actors, and customers. The study also highlighted the uncertainties and bottlenecks faced by seaweed cultivation, including site selection, licensing, seed supply, timing, and processing. The findings contribute to a comprehensive understanding of macroalgal cultivation and can guide decision-making for growers, certification bodies, and policymakers.
Article
Materials Science, Multidisciplinary
Lin Wang, Yu-Qi Hao, Wei Ma, Sen Liang
Summary: Enhancing the semiconductor-metal phase transition temperature (T-SMT) of VO2 was achieved by doping Ge4+, resulting in a decrease in lattice parameter as Ge concentration increased. T-SMT initially increased from 64.5 to 73.0 degrees C at 8 at% Ge and then decreased at higher Ge concentrations. The impact of lattice distortion induced by Ge doping was found to be more significant than changes in electronic structure in modulating T-SMT of GexV1-xO2.
Article
Green & Sustainable Science & Technology
Kyungdeok Noh, Byoung Ryong Jeong
Summary: The study conducted experiments to improve home hydroponics technology, finding that a temperature setting of 25/18 degrees C and a 14-hour photoperiod are most suitable for hastened growth, while a 20/15 degrees C temperature and 18-hour photoperiod are suitable for delayed growth.
Article
Engineering, Multidisciplinary
Padil, Meilana Dharma Putra, Iryanti Fatyasari Nata, Doni Rahmat Wicakso, Zulfarina, Chairul Irawan, Amun Amri
Summary: Microalgae cultivated in peat swamp water showed higher biomass and productivity compared to those in pure water. The proposed kinetic model, with modification to the modified Gompertz model, demonstrated excellent predictive performance in terms of initial biomass and lag phase.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Marine
Juan Pablo Arias-Echeverri, Paula Andrea Zapata-Ramirez, Margarita Ramirez-Carmona, Leidy Rendon-Castrillon, Carlos Ocampo-Lopez
Summary: Colombia has a rich diversity of marine ecosystems in its coastal and island areas. Research on seaweed has primarily focused on identifying and categorizing the 628 known species, mainly in the Caribbean Sea. Despite this diversity, Colombia lags behind other Latin American and global countries in seaweed exploitation. Therefore, there is a need for increased research, technological appropriation, and effective public policies to boost the seaweed industry and support Colombia's transition towards a blue economy.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Fisheries
Suzannah-Lynn Billing, Julie Rostan, Paul Tett, Adrian Macleod
Summary: This study aims to explore the social interactions of seaweed cultivation, finding that interpersonal relationships, perceptions of environmental risk, scale of decision-making and operations, and communication are key to local perceptions of seaweed cultivation operations. The concept of social license to operate is discussed as a framework for this emergent industry.
Article
Biotechnology & Applied Microbiology
Clovis Murilo Pires, Giovana Carolina Bazzo, Pedro Luiz Manique Barreto, Carlos Manoel do Espirito Santo, Thallis Felipe Boa Ventura, Anna Gabrielle La Macchia Pedra, Ticiane Rover, Malachy McGovern, Leila Hayashi
Summary: The study aimed to evaluate BFT effluent as a fertilizer for red seaweed cultivation and its effects on carrageenan yield and quality. Results showed that BFT effluent can replace von Stosch solution in tank cultivation of K. alvarezii, and the seaweed, along with bacteria and microalgae from the effluent, can function as an effective biofilter in IMTA systems.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Md. Simul Bhuyan
Summary: Seaweeds have significant contributions to food security and nutrition, but their cultivation can have adverse effects on coastal ecosystems. Climate factors such as disease acceleration, genetic modifications, and physical-chemical variations pose risks to seaweed farming. Risk assessments and mitigation strategies are necessary to protect the ecosystem and maximize the benefits of seaweed farming initiatives.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Fisheries
Hongtian Luo, Yuzhong Fu, Jian Shi, Songguang Xie, Yufeng Yang
Summary: Initiatives to mitigate climate change and the role of natural carbon sinks in coastal ecosystems have attracted considerable attention. This study focuses on seaweed mariculture in China's coastal areas over the past 20 years and quantifies the carbon storage in cultivated seaweed biomass. The results show a rising trend in the carbon sink potential of cultivated seaweeds. The total benefit of carbon sequestration and environmental benefits were also evaluated. These findings highlight the ecological value of large-scale cultivated seaweeds in increasing marine carbon sequestration and resolving offshore environmental issues, emphasizing the need for further development of the seaweed cultivation industry worldwide.
Article
Environmental Sciences
Li Sun, Chunzhi Zhao, Shiqing Sun, Changwei Hu, Yongjun Zhao, Juan Liu
Summary: The study showed that 1 mg L-1 MWCNTs can effectively enhance the growth and photosynthesis of Chlorella vulgaris, leading to increased removal rates of tetracycline and nutrients. Moderate concentrations of MWCNTs are found to promote the activity of Chlorella vulgaris photosynthesis, aiding in tetracycline and nutrient removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Guang Gao, Lin Gao, Meijia Jiang, Ao Jian, Linwen He
Summary: This study assessed the potential of seaweed cultivation in achieving carbon neutrality in China by 2060. Seaweed cultivation can remove and sequester significant amounts of carbon, nitrogen, and phosphorus, while also increasing dissolved oxygen in seawaters. Among the seaweed species studied, Gracilariopsis lemaneiformis showed the highest capacities for carbon removal and sequestration. The findings indicate that seaweed cultivation can play a crucial role in achieving carbon neutrality and mitigating deoxygenation and eutrophication in seawaters.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Ecology
Natalia S. Martinez-Curci, Pablo Fierro, Juan G. Navedo
Summary: Seaweed aquaculture is a growing industry with low impact and ecosystem benefits, but it may alter coastal habitats and affect migratory shorebirds. This study experimentally assessed the effects of seaweed farming on benthic macroinvertebrates and shorebirds, and found that it significantly impacts biodiversity and habitat use of tactile-foraging shorebirds.
ECOLOGICAL APPLICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Christopher R. K. Glasson, Cara A. Luiten, Susan M. Carnachan, Alison M. Daines, Joel T. Kidgell, Simon F. R. Hinkley, Christina Praeger, Maria Andrade Martinez, Liam Sargison, Marie Magnusson, Rocky de Nys, Ian M. Sims
Summary: Ulvans extracted from three species of Ulva were found to primarily contain rhamnose and glucuronic acid, with small amounts of xylose and iduronic acid. Despite structural diversity, these ulvans showed minimal antioxidant or inhibitory activity on enzymatic processes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Food Science & Technology
Kunal Pratap, Marwan E. Majzoub, Aya C. Taki, Socorro Miranda Hernandez, Marie Magnusson, Christopher R. K. Glasson, Rocky de Nys, Torsten Thomas, Andreas L. Lopata, Sandip D. Kamath
Summary: The intestinal microbial community is crucial for gut health, and dietary components like algal polysaccharides and carotenoids can modulate its structure. This study found that ulvan and astaxanthin can promote significant changes in the gut microbiota of mice, highlighting their potential to improve gut health conditions.
Review
Biotechnology & Applied Microbiology
Christopher R. K. Glasson, Robert D. Kinley, Rocky de Nys, Nick King, Serean L. Adams, Michael A. Packer, Johan Svenson, Charles T. Eason, Marie Magnusson
Summary: Ruminant agriculture contributes significantly to global methane emissions, and mitigating strategies such as using methanogen inhibitors have gained interest. Asparagopsis seaweed, when included in livestock feed at low levels, inhibits methane generation by up to 98% and improves feed efficiency. Research is rapidly progressing to cultivate Asparagopsis at a large scale and develop aquaculture production systems. It is crucial to assess the benefits and risks associated with its production as a ruminant feed ingredient.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biotechnology & Applied Microbiology
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: Filamentous algae nutrient scrubbers (FANS) show great potential for cost-effective and sustainable nutrient bioremediation. Developing a standardized bioassay to assess the productivity and nutrient removal of filamentous algae attached to a bottom substrate is crucial. Oedogonium sp. is identified as the best performing species with strong attachment, high biomass productivity, and nutrient removal rates.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Sunil K. Panchal, Naga K. R. Ghattamaneni, Marie Magnusson, Andrew Cole, David Roberts, Nicolas Neveux, Lindsay Brown, Nicholas A. Paul
Summary: This study found that macroalgae biomass cultivated in different wastewater sources contain different nutrients and may have different effects in the development of metabolic syndrome induced by a high-carbohydrate, high-fat diet. Macroalgae biomass cultured in treated municipal wastewater may improve blood glucose responses, while biomass grown in ash dam water from a coal-fired power station may decrease abdominal fat deposition.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Christina Praeger, Marie E. E. Magnusson, Rebecca J. J. Lawton
Summary: This study successfully obtained viable zoospores of E. radiata through the method of artificially induced sorus formation, enabling year-round production of high-quality sporelings.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Environmental Sciences
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: The study investigated how operating parameters affect the biomass productivity and nutrient removal performance of Oedogonium sp. - a promising species for unialgal FANS. The results showed that the initial standing crop, harvesting frequency, and influent flow rate significantly affected biomass productivity and nutrient removal. Optimal parameters were determined to be an initial standing crop of 70-80 g DW m-2, a four-day harvesting interval, and an influent flow rate of 1 L min-1 (16.7 L min-1 m-1 width). These findings contribute to optimizing the biomass production and nutrient removal of Oedogonium sp. on FANS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agronomy
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: This study compared the effects of seeding method and species composition on the biomass productivity and nutrient removal rates of FANS treating agricultural drainage. The results showed that the seeding method and species composition did not significantly affect biomass productivity and nutrient removal performance. However, the FANS seeded with a single species had lower biomass wash-off and higher nutrient removal rates compared to the FANS with mixed species.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Ecology
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: This study investigated the growth rates and nutrient uptake rates of four filamentous algae species and identified Oedogonium sp. as the most promising species for year-round cultivation on filamentous algae nutrient scrubbers (FANS).
ECOLOGICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Jacob Nepper-Davidsen, Christopher R. K. Glasson, Rebecca J. J. Lawton, Marie Magnusson
Summary: The biomass composition of Ecklonia radiata, a native kelp species in New Zealand, shows significant spatial and temporal variation. This study examined the composition of E. radiata biomass collected from different sites across the North Island of New Zealand and throughout a year at a single site. The results revealed high spatial variation in the biomass components and significant temporal variation in several key parameters. Overall, E. radiata could serve as a viable alternative for various commercial applications, with comparable biomass composition to northern hemisphere species but with higher phlorotannin content.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Fisheries
Jacob Nepper-Davidsen, Marie Magnusson, Christopher R. K. Glasson, Rebecca J. Lawton
Summary: This study investigated the effect of line configuration on the survival and growth of the native kelp Ecklonia radiata in New Zealand. The results showed that individuals grown on vertical lines had higher survival rates, faster growth, and larger weight compared to those on horizontal lines.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2023)