Relevant bibliographies by topics / Marine algae

Academic literature on the topic 'Marine algae'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Marine algae"

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Mišurcová, L., S. Kráčmar, B. Klejdus, and J. Vacek. "Nitrogen content, dietary fiber, and digestibility in algal food products." Czech Journal of Food Sciences 28, No. 1 (February 18, 2010): 27–35. http://dx.doi.org/10.17221/111/2009-cjfs.

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The basic nutritional aspects and parameters of freshwater and marine algal food products are described. Blue-green algae (<I>Spirulina pacifica, S. platensis</I>), green algae (<I>Chlorella pyrenoidosa</I>), red algae (<I>Palmaria palmata, Porphyra tenera</I>), and brown algae (<I>Eisenia bicyclis, Hizikia fusiformis, Laminaria japonica, Undaria pinnatifida</I>) were used for this purpose. The ash content, total nitrogen, dietary fibers, and in vitro digestibility of the above-mentioned algal species were studied. The ash contents amounted to 8–11% (for freshwater) and 9–33% (for marine) of the weights of the algal samples. The total nitrogen contents were analysed using a modified Winkler’s method; in the process, higher nitrogen contents were observed in freshwater algae than in marine ones. For the analysis of dietary fiber contents, the instrument Ankom<sup>220</sup> Fibre Analyser was used. The marine brown algae species were generally assigned higher contents of dietary fiber than the freshwater algal products. The results of the dietary fiber analysis differed with the methodologies used. Pepsin, pancreatin, and a combination of both were applied for the study of <I>in vitro</I> digestibility. Generally, brown algae showed the worst digestibility in comparison with other algal food products.
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Maliki, Intan Mariana, Mailin Misson, Peik Lin Teoh, Kenneth Francis Rodrigues, and Wilson Thau Lym Yong. "Production of Lectins from Marine Algae: Current Status, Challenges, and Opportunities for Non-Destructive Extraction." Marine Drugs 20, no. 2 (January 26, 2022): 102. http://dx.doi.org/10.3390/md20020102.

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Marine algae are an excellent source of novel lectins. The isolation of lectins from marine algae expands the diversity in structure and carbohydrate specificities of lectins isolated from other sources. Marine algal lectins have been reported to have antiviral, antitumor, and antibacterial activity. Lectins are typically isolated from marine algae by grinding the algal tissue with liquid nitrogen and extracting with buffer and alcohol. While this method produces higher yields, it may not be sustainable for large-scale production, because a large amount of biomass is required to produce a minute amount of compound, and a significant amount of waste is generated during the extraction process. Therefore, non-destructive extraction using algal culture water could be used to ensure a continuous supply of lectins without exclusively disrupting the marine algae. This review discusses the traditional and recent advancements in algal lectin extraction methods over the last decade, as well as the steps required for large-scale production. The challenges and prospects of various extraction methods (destructive and non-destructive) are also discussed.
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Nair, Rathish, Rajesh Chabhadiya, and Sumitra Chanda. "Marine Algae." Journal of Herbal Pharmacotherapy 7, no. 1 (January 2007): 73–86. http://dx.doi.org/10.1080/j157v07n01_07.

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Nair, Rathish, Rajesh Chabhadiya, and Sumitra Chanda. "Marine Algae." Journal Of Herbal Pharmacotherapy 7, no. 1 (June 14, 2007): 73–86. http://dx.doi.org/10.1300/j157v07n01_07.

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Pangestuti, Ratih, and Singgih Wibowo. "Prospects and Health Promoting Effects of Brown Algal-derived Natural Pigments." Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology 8, no. 1 (May 24, 2013): 37. http://dx.doi.org/10.15578/squalen.v8i1.26.

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Recently, a great deal of interest has been developed to isolate novel bioactive compounds from marine resources. Among marine resources, marine brown algae are considered valuable sources of structurally diverse bioactive compounds such as chlorophylls and carotenoids. Chlorophyll has been known for its antioxidant activity; meanwhile carotenoid is well known for its anticancer and anti-obesity properties. Therefore, marine brown algal-derived natural pigments have great potential for further development of valuable products in nutraceutical, and pharmaceutical areas. This contribution presents an overview of potential health benefits properties, and prospects of natural pigments derived from marine brown algae. Keywords: Marine algae, natural pigments, nutraceutical, pharmaceutical.
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Rull Lluch, Jordi. "Marine benthic algae of Namibia." Scientia Marina 66, S3 (December 30, 2002): 5–256. http://dx.doi.org/10.3989/scimar.2002.66s35.

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Patyshakuliyeva, Aleksandrina, Daniel L. Falkoski, Ad Wiebenga, Klaas Timmermans, and Ronald P. de Vries. "Macroalgae Derived Fungi Have High Abilities to Degrade Algal Polymers." Microorganisms 8, no. 1 (December 26, 2019): 52. http://dx.doi.org/10.3390/microorganisms8010052.

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Marine fungi associated with macroalgae are an ecologically important group that have a strong potential for industrial applications. In this study, twenty-two marine fungi isolated from the brown seaweed Fucus sp. were examined for their abilities to produce algal and plant biomass degrading enzymes. Growth of these isolates on brown and green algal biomass revealed a good growth, but no preference for any specific algae. Based on the analysis of enzymatic activities, macroalgae derived fungi were able to produce algae specific and (hemi-)cellulose degrading enzymes both on algal and plant biomass. However, the production of algae specific activities was lower than the production of cellulases and xylanases. These data revealed the presence of different enzymatic approaches for the degradation of algal biomass by macroalgae derived fungi. In addition, the results of the present study indicate our poor understanding of the enzymes involved in algal biomass degradation and the mechanisms of algal carbon source utilization by marine derived fungi.
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Ragazzola, Federica, Regina Kolzenburg, Jurgita Zekonyte, Sebastian Teichert, Chulin Jiang, Ante Žuljević, Annalisa Caragnano, and Annalisa Falace. "Structural and Elemental Analysis of the Freshwater, Low-Mg Calcite Coralline Alga Pneophyllum cetinaensis." Plants 9, no. 9 (August 24, 2020): 1089. http://dx.doi.org/10.3390/plants9091089.

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Coralline algae are one of the most diversified groups of red algae and represent a major component of marine benthic habitats from the poles to the tropics. This group was believed to be exclusively marine until 2016, when the first freshwater coralline algae Pneophyllum cetinaensis was discovered in the Cetina River, southern Croatia. While several studies investigated the element compositions of marine coralline algal thalli, no information is yet available for the freshwater species. Using XRD, LA-ICP-MS and nano indentation, this study presents the first living low-Mg calcite coralline algae with Mg concentrations ten times lower than is common for the average marine species. Despite the lower Mg concentrations, hardness and elastic modulus (1.71 ± 1.58 GPa and 29.7 ± 18.0 GPa, respectively) are in the same range as other marine coralline algae, possibly due to other biogenic impurities. When compared to marine species, Ba/Ca values were unusually low, even though Ba concentrations are generally higher in rivers than in seawater. These low values might be linked to different physical and chemical characteristics of the Cetina River.
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Pangestuti, Ratih, Evi Siahaan, and Se-Kwon Kim. "Photoprotective Substances Derived from Marine Algae." Marine Drugs 16, no. 11 (October 23, 2018): 399. http://dx.doi.org/10.3390/md16110399.

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Marine algae have received great attention as natural photoprotective agents due to their unique and exclusive bioactive substances which have been acquired as an adaptation to the extreme marine environment combine with a range of physical parameters. These photoprotective substances include mycosporine-like amino acids (MAAs), sulfated polysaccharides, carotenoids, and polyphenols. Marine algal photoprotective substances exhibit a wide range of biological activities such as ultraviolet (UV) absorbing, antioxidant, matrix-metalloproteinase inhibitors, anti-aging, and immunomodulatory activities. Hence, such unique bioactive substances derived from marine algae have been regarded as having potential for use in skin care, cosmetics, and pharmaceutical products. In this context, this contribution aims at revealing bioactive substances found in marine algae, outlines their photoprotective potential, and provides an overview of developments of blue biotechnology to obtain photoprotective substances and their prospective applications.
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Bird, C. J., and J. P. van der Meer. "Systematics of economically important marine algae: a Canadian perspective." Canadian Journal of Botany 71, no. 3 (March 1, 1993): 361–69. http://dx.doi.org/10.1139/b93-040.

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Marine algae of economic importance encompass species of positive value, such as seaweeds harvested for food or hydrocolloid extractives, and species with negative effect, such as toxic phytoplankton or nuisance macrophytes. Only a small part of the global algal resource is obtained in Canada, and the overall benefit to the nation's economy is relatively minor, but there exists the potential for further development of useful species. On the other hand, the negative effects of toxic microalgae are increasing, in the form of losses to the shellfish fishery and aquaculture industry and the cost of providing toxicity-testing and phytoplankton-monitoring services. It is obvious that effective utilization of valuable algae, or defense against undesirable ones, must be attended by sound taxonomy to ensure that algae of interest are correctly identified and recognizable. However, the algae present particular problems to systematists, a major one being the variety of life histories, which may involve independent and conspicuous dissimilar phases. In addition, many algae are phenotypically highly variable in response to environment, which is often insufficiently appreciated. The converse situation also exists, in that morphologically similar species are sometimes regarded as a single entity. Algal taxonomists should strive to determine which variations are genetic and therefore taxonomically significant. To illustrate these points, we review recent taxonomic studies on some algal genera of present or potential economic importance in Canada. Key words: marine algae, systematics, economic potential, variability, genetics.
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Dissertations / Theses on the topic "Marine algae"

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Lekan, Danelle Kara. "Influence of temperature, salinity and nutrients on growth and toxin of Karenia brevis clones." View electronic thesis, 2008. http://dl.uncw.edu/etd/2008-2/r3/lekand/danellelekan.pdf.

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Bischoff-Bäsmann, Bettina. "Der Temperaturbedarf und Biogeographie mariner Makroalgen." Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung, 1992. http://catalog.hathitrust.org/api/volumes/oclc/54346279.html.

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Graham, Sylvia Lynne. "Growth and grazing of microzooplankton in response to the harmful alga Heterosigma akashiwo in prey mixtures /." Online version, 2008. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=305&CISOBOX=1&REC=8.

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Mabande, Edmund Rufaro. "Antimicrobial discovery from South African marine algae." University of the Western Cape, 2018. http://hdl.handle.net/11394/6592.

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>Magister Scientiae - MSc
Antimicrobials are chemical compounds that destroy or inhibit the growth of microorganisms. The majority of these antimicrobials are actually natural products or natural product derived with key examples being the pioneer antibiotics penicillin and cephalosporin. Antimicrobials are an extremely important class of therapeutic agents; however, the development of drug resistance and slow pace of new antibiotic discovery is one of the major health issues facing the world today. There is therefore a crucial need to discover and develop new antibacterial agents. In this study, the potential of marine algae as a source of new antibiotics was explored. Crude organic extracts and chromatographic fractions obtained from small-scale extraction of 17 different marine algae were used to prepare a pre-fractionated library that would be tested against several disease causing microorganisms. The activity of the pre-fractionated library and purified compounds was determined against a panel of drug resistant microorganisms namely Acinetobacter baumannii ATCCBAA®-1605™, Enterococcus faecalis ATCC® 51299™, Escherichia coli ATCC® 25922™, Staphylococcus aureus subsp. aureus ATCC® 33591™ and Candida albicans ATCC® 24433™. Finally, cytotoxicity tests of 50 selected library extracts and isolated compounds were done against two cell lines namely MCF-7 (breast cancer) and HEK-293 (kidney embryonic). Based on their antimicrobial activity and interesting chemical profiles, the seaweeds Plocamium sp. and Stypopodium multipartitum were selected for further study. Three new and unusual halogenated monoterpenes (4.16, 4.17 and 4.18) were isolated from Plocamium sp., and an unusual meroditerpenoid (5.8) was isolated from Stypopodium multipartitum. The metabolites were purified using preparative (silica gel) chromatography as well as semipreparative normal phase HPLC. The structures of purified compounds were determined from spectroscopic data, including nuclear magnetic resonance (NMR) spectroscopy. A small library of 153 fractions was generated from collections of South African marine algae. Pre-fractionated crude extracts showed excellent antimicrobial activity against all microbes but particularly against Staphylococcus aureus. The compounds were generally active against the Gram positive bacteria and the yeast. In conclusion, three antimicrobial halogenated monoterpenes and an unusual monoterpene were isolated from a Plocamium sp. and Stypopodium multipartitum respectively. Antimicrobial activity of crude fractions was excellent but that of isolated compounds was not as great as anticipated.
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Rufaro, Mabande Edmund. "Antimicrobial discovery from South African marine algae." University of the Western Cape, 2018. http://hdl.handle.net/11394/6529.

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>Magister Scientiae - MSc
Antimicrobials are chemical compounds that destroy or inhibit the growth of microorganisms. The majority of these antimicrobials are actually natural products or natural product derived with key examples being the pioneer antibiotics penicillin and cephalosporin. Antimicrobials are an extremely important class of therapeutic agents; however, the development of drug resistance and slow pace of new antibiotic discovery is one of the major health issues facing the world today. There is therefore a crucial need to discover and develop new antibacterial agents. In this study, the potential of marine algae as a source of new antibiotics was explored. Crude organic extracts and chromatographic fractions obtained from small-scale extraction of 17 different marine algae were used to prepare a pre-fractionated library that would be tested against several disease causing microorganisms. The activity of the pre-fractionated library and purified compounds was determined against a panel of drug resistant microorganisms namely Acinetobacter baumannii ATCCBAA®-1605™, Enterococcus faecalis ATCC® 51299™, Escherichia coli ATCC® 25922™, Staphylococcus aureus subsp. aureus ATCC® 33591™ and Candida albicans ATCC® 24433™. Finally, cytotoxicity tests of 50 selected library extracts and isolated compounds were done against two cell lines namely MCF-7 (breast cancer) and HEK-293 (kidney embryonic).
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Fong, Yin-shan. "Harmful Algal Blooms (HABs) in coastal waters and their management /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25436247.

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Lo, Shiu-hong. "Antibacterial activity of some marine planktonic algae in Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19667152.

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Nylund, Göran M. "Chemical mediation of fouling in seaweeds /." Göteborg : Göteborg University, Department of Marine Ecology, 2005. http://www.loc.gov/catdir/toc/fy0701/2006388585.html.

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Fletcher, Kyle. "Genetic investigations of oomycetes associated with marine algae." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227933.

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This thesis aims to initially define the present knowledge of pathogens which infect algae, highlighting the potential economic significance of such pathogens, given the recent rise in algaculture. Focus is given to the oomycetes, a group of organisms which already contain several significant genera of plant (Phytophthora) and animal (Saprolegnia) pathogens, as well as Olpidiopsis; a genus reported to significantly impact algaculture in Asia. Subsequent chapters aim to genetically characterise stramenopiles (specifically oomycetes and hyphochytrids) associated with algae in two ways. Firstly known pathogens of algae, Olpidiopsis feldmanni and Anisolpidium rosenvingei are morphologically diagnosed by microscopy and genetically surveyed at phylogenetically significant loci. Further morphological information on these two pathogens is reported here expanding the current knowledge of these rarely reported organisms. Surprisingly, genetic evidence indicates that Anisolpidium, a uniflagellate genus, belongs to the biflagellate class Oomycota and not the closely related uniflagellate class Hyphochytriomycota, as previously suspected. Morphological and genetic features of these classes are contrasted to justify this molecular interpretation. These first two studies, along with the publically available sequences of algal pathogens are then used to design primers, which enable an oomycete-directed metagenomic survey of brown algae, allowing the investigation of what organisms are associated with these. At present the results of this survey are unreported. Finally a Eurychasma dicksonii transcriptome as well as genomic sequences of other stramenopiles are investigated for the presence of cadherin protein models. At present such models are automatically annotated and reported. This study is the first manual curation of the protein and defines a unique protein family which is presented by the oomycete genera Eurychasma, Pythium, Phytophthora and Albugo as well as the labyrinthulomycete Aurantiochytrium limanicum. The protein model is not reported from other sequenced oomycete genera or photosynthetic stramenopiles.
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Paul, Nicholas Andrew School of Biological Earth &amp Environmental Sciences UNSW. "The ecology of chemical defence in a filamentous marine red alga." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Sciences, 2006. http://handle.unsw.edu.au/1959.4/24304.

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I investigated the ecological functions of halogenated secondary metabolites from the red alga Asparagopsis armata, their localisation in specialised cells and also their cost of production. A. armata produces large amounts of halogenated metabolites ( < 20 ??g / mg dry weight) that are sequestered in gland cells, as was demonstrated with light, epifluorescence and transmission electron microscopy. Cellular structures were identified that likely assist the release of metabolites from the gland cells to the algal surface. The halogenated metabolites of A. armata have multiple ecological roles, functioning as both inhibitors of bacterial fouling and as herbivore deterrents. Their activity against bacteria and herbivores was measured by a novel test in which the metabolites were manipulated in A. armata by omitting bromide ions from the culture media. This technique prevented the production of halogenated metabolites, but did not impact on other aspects of algal biology. Algae lacking halogenated metabolites (bromide [-] algae) had higher densities of epiphytic bacteria than those that continued to produce metabolites (bromide [+] algae). Bioassays with pure compounds against individual bacterial isolates further supported an inhibitory role for the halogenated metabolites against epiphytic bacteria, and also indicated an affect on bacterial community structure as well as abundance. Bromide (+) A. armata produced halogenated metabolites that also deterred feeding by two herbivores (an amphipod and an abalone), but not a third (an opisthobranch mollusc). A novel outcome from these feeding assays was the demonstration of a relationship between herbivore size and consumption of the chemically defended A. armata by the abalone Haliotis rubra. In addition to the fitness benefits gained from chemical defence, there were also costs for allocating resources to secondary metabolites. These costs were only detected under limiting light resources, consistent with predictions of the plant defence models. The integration of chemical analyses and cellular measures of chemical defence proved essential in elucidating resource allocation to chemical defence in the filamentous stage of A. armata. This thesis highlights that the simple relationships between growth and defence in filamentous algae can provide an excellent model for studies of the ecology and evolution of chemical defences in marine algae.
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Books on the topic "Marine algae"

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Kim, Se-Kwon, and Katarzyna Chojnacka, eds. Marine Algae Extracts. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.

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1848-1929, MacKay A. H., and Royal Society of Canada, eds. Marine algae of New Brunswick. [Ottawa?: s.n., 1994.

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Harris, Elisabeth Anne. Viruses in marine algae. Birmingham: University of Birmingham, 1998.

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Meinesz, Alexandre. Killer algae. Chicago: University of Chicago Press, 1999.

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Meinesz, Alexandre. Killer algae. Chicago: University of Chicago Press, 2001.

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(1913-1918), Canadian Arctic Expedition, ed. Botany. Part B: Marine algae. Ottawa: F.A. Acland, 1997.

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Morton, Osborne. Marine algae of Northern Ireland. Belfast: Ulster Museum, 1994.

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Stengel, Dagmar B., and Solène Connan, eds. Natural Products From Marine Algae. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2684-8.

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Lluch, Jordi Rull. Marine benthic algae of Namibia. Barcelona, Spain: Institut de Ciències del Mar, 2002.

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E, Payri Claude, ed. Marine algal flora of French Polynesia. Paris: Laboratoire de cryptogamie, Muséum national d'histoire naturelle, 2006.

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Book chapters on the topic "Marine algae"

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Bernecker, Andrea. "Marine Benthic Algae." In Marine Biodiversity of Costa Rica, Central America, 109–17. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-8278-8_5.

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Saeid, Agnieszka, and Katarzyna Chojnacka. "Algae Biomass as a Raw Material for Production of Algal Extracts." In Marine Algae Extracts, 179–88. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch10.

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Lu, Wen-Yu, Hui-Jing Li, and Yan-Chao Wu. "Marine Polysaccharides from Algae." In Marine Biochemistry, 85–109. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003303916-4.

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Chojnacka, Katarzyna, and Se-Kwon Kim. "Introduction of Marine Algae Extracts." In Marine Algae Extracts, 1–14. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch1.

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Chojnacka, Katarzyna, Izabela Michalak, Agnieszka Dmytryk, Mateusz Gramza, Adam Słowiński, and Henryk Górecki. "Algal Extracts as Plant Growth Biostimulants." In Marine Algae Extracts, 189–212. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch11.

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Ueno, Mikinori, and Tatsuya Oda. "Effects of Alginate Oligosaccharides on the Growth of Marine Microalgae." In Marine Algae Extracts, 213–26. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch12.

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Rubio, Viviana P., J. Paniagua-Michel, and Jorge Olmos. "Omegas: Pharmaceutical High Value Products and One of the Most Functional Bioactive Compounds." In Marine Algae Extracts, 227–44. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch13.

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de Carvalho, Luciana R., Julyana N. Farias, Pablo Riul, and Mutue T. Fujii. "An Overview of Global Distribution of the Diterpenes Synthesized by the Red AlgaeLaurenciaComplex (Ceramiales, Rhodomelaceae)." In Marine Algae Extracts, 245–66. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch14.

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Li, Yong-Xin, Yong Li, and Se-Kwon Kim. "Anticancer Compounds from Marine Algae." In Marine Algae Extracts, 267–76. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch15.

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Pereira, Leonel, Filipa Meireles, Helena T. Abreu, and Paulo J. A. Ribeiro-Claro. "A Comparative Analysis of Carrageenans Produced by Underutilized versus Industrially Utilized Macroalgae (Gigartinales, Rhodophyta)." In Marine Algae Extracts, 277–94. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527679577.ch16.

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Conference papers on the topic "Marine algae"

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Zhang, Haijun, Yongfeng Gong, Botao Zhang, Xiuyong Chen, Lijia Fang, Peipeng Jin, and Hua Li. "Corrosion and Algal Behaviors of HVOF Sprayed Fe-based Amorphous Coatings for Marine Applications." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau, and J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0721.

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Abstract In this study, Fe-based amorphous/nanocrystalline coatings with a composition of Fe53Cr19Zr7Mo2C18Si have been fabricated by high velocity oxygen fuel (HVOF) spray. Postspray annealing treatment at 750°C was employed to enhance the amorphicity of the as-sprayed coatings. The microstructure, corrosion resistance and algal adhesion behaviors of the as-sprayed and annealed coatings were characterized by scanning electron microscopy, transmission electron microscopy, laser confocal scanning microscopy, X-ray diffraction and electrochemical methods. Results show that the as-sprayed coatings exhibited excellent corrosion resistance and decreased algal adhesion, while the annealed coatings exhibited compromised anticorrosion performance but significantly reduced adhesion of algae.
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Bazes, A., F. Fay, K. Vallee-Rehel, E. Quemener, J. P. Braud, and N. Bourgougnon. "Development of friendly antifouling coatings from marine algae." In Oceans 2005 - Europe. IEEE, 2005. http://dx.doi.org/10.1109/oceanse.2005.1511708.

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Annam Renita, A., D. Joshua Amarnath, Anandhi Padhmanabhan, Bhavani Dhamodaran, and Joe Kizhakudan. "Production of Bio-Diesel from marine macro algae." In 2010 Recent Advances in Space Technology Services and Climate Change (RSTSCC). IEEE, 2010. http://dx.doi.org/10.1109/rstscc.2010.5712882.

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Al-AShwal, Aisha Ahmed, Noora Al-Naimi, Jassim Al-Khayat, Bruno Giraldes, Najat Al-Omari, Noora Al-Fardi, Caesar Sorino, and Ekhlas Abdelbari. "Distribution and Diversity of Benthic Marine Macroalgae in Islands around Qatar." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0052.

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Extending into the Arabian Gulf, Qatar is surrounded by a number of islands mostly scattered by the eastern coastline. With the unique physical characteristics of the Gulf, which is a highly saline sea with high seawater temperatures, there is an urge need to investigate the macroalgae living in such harsh environment. Macroalgae plays an important role in the food web as they are primary producers and providers of food for other organisms. They also provide shelter and habitat in the marine ecosystem for herbivorous fish and other invertebrate animals. Additionally, macroalgae plays an outstanding role in reducing CO2 from the atmosphere and increasing the level of dissolved oxygen in their immediate environment. However, there are few studies on marine macroalgae in Qatar and no previous studies found related to macroalgae from the islands around Qatar. The present work contributes to the macroalgae research by providing the first survey of distribution and diversity of benthic marine macroalgae in islands around Qatar. The marine benthic green, red and brown macroalgae of intertidal and subtidal in marine zone areas around Qatar were collected during Qatar’s Islands project, which started 2018. The collected macroalgae are documented and a total of 67 species of macroalgae are recorded for all islands around Qatar, 24 Chlorophyta (Green algae), 25 Rhodophyta (Red algae) and 18 species Phaeophyta (Brown algae). The Red algae are dominant taxon in term of species richness, accounting for an average of 37% of the species at all study sites. The islands which had more species are Al-Beshaireya 58 Species, Al-Aaliya 53 Species, Sheraouh 48 Species, Janan 43 Species and Bu Felaita 37 Species. Our results show that islands located at eastern and southeastern coast of Qatar have more diversity of algae species than those located at the western and northwestern coast.
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Maloney, Katie, Galen Halverson, James Schiffbauer, Shuhai Xiao, Timothy M. Gibson, Maxwell Lechte, Vivien M. Cumming, et al. "POSSIBLE MULTICELLULAR GREEN ALGAE IN EARLY TONIAN MARINE ENVIRONMENTS." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-354734.

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Liao, Ran, and Hui Ma. "Probing the suspended marine algae using polarized-light scattering." In OCEANS 2014 - TAIPEI. IEEE, 2014. http://dx.doi.org/10.1109/oceans-taipei.2014.6964437.

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Beaumont, A., D. Mills, and P. Newman. "Some Effects of Tributyl Tin (TBT) on Marine Algae." In OCEANS '87. IEEE, 1987. http://dx.doi.org/10.1109/oceans.1987.1160630.

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Ardanza, María Del Pilar, María Natalia Piol, and Susana Patricia Boeykens. "Superficial microanalysis of marine algae for sustainable effluent treatment." In 21st LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leadership in Education and Innovation in Engineering in the Framework of Global Transformations: Integration and Alliances for Integral Development”. Latin American and Caribbean Consortium of Engineering Institutions, 2023. http://dx.doi.org/10.18687/laccei2023.1.1.1585.

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Özdemir, Irmak. "Sustainable Aviation Fuel Investment and Feedstock Calculations by Microalgae Applications with Biorefinery Approach." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216610-ms.

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Abstract Numerous studies have been created in recent years to establish a sustainable biofuel production industry to address the depletion of fossil fuels. This new industry must be effective (high productivity), financially successful (low production costs, which leads to reasonable fuel rates), and moral (low carbon balance). Algae, one of the most significant sources of biofuel, can survive in a variety of ecosystems, including those found in freshwater and marine environments, desert environments, hot springs, and glacial environments. The kinds and combinations of photosynthetic pigments present in various algal species decide the systematics of algae. Microalgae have enormous potential for the creation of sustainable biofuels. The expense of aviation fuel would approach economic viability if algae production could be scaled up to commercial levels, which would also result in a reduction in carbon emissions. That is more than enough motivation to compete with petroleum fuels, particularly when paired with existing policy support or consideration of coproduct opportunities, as well as promises from the international community to decarbonize aviation. The study’s objective is to use wastewater effluent to harvest biofuel from algae specie. Studies will be done in this context on the physiological and chemical characteristics of Arthrospira Platensis. Also, it will research and interpreted how much investment and feedstock is required if the airlines use sustainable aviation fuels.
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Quiñones, Martín, Richard Leung, and Sherry Williams. "Algae Based Hydroprocessed Fuel Use on a Marine Gas Turbine." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69869.

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The Naval Surface Warfare Center, Carderock Division (NSWCCD) Philadelphia conducted a full scale gas turbine engine test using Rolls Royce engine models 501-K34 and 250-KS4 to assess engine performance and fuel combustion characteristics of an algae based hydroprocessed fuel. The fuel, hereafter described as alternate fuel, consisted of a 50/50 blend of NATO F-76 fuel and the algae based formulation. It is the first time that the U.S. Navy uses a non-petroleum based fuel on a marine gas turbine. The test was conducted at the DDG 51 Land Based Engineering Site (LBES) of NSWCCD during 16–21 January 2011. The alternate fuel test conducted on the 501-K34 engine consisted of 7 cycles of engine operation, one using NATO F-76 fuel to develop a baseline run and six cycles using alternate fuel. Each cycle was 7 hours, twenty minutes in duration and was composed of 27 distinct load scenarios. The total duration of the test was forty four hours. The 250-KS4 engine was used as the starter mechanism for the 501-K34 engine. During the test, parameters for combustion temperature, fuel demand, fuel manifold pressure, engine start time, and operation under various load conditions were recorded. This paper discusses the results of the above test by comparing engine operation using alternate fuel to engine performance using NATO F-76 fuel.
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Reports on the topic "Marine algae"

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Hanson, Andrew D. Biosynthesis of 3-Dimethylsulfoniopropionate in Marine Algae. Fort Belvoir, VA: Defense Technical Information Center, March 1999. http://dx.doi.org/10.21236/ada360698.

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Meints, Russel H. Mechanisms of Viral Infection in Marine Brown Algae. Fort Belvoir, VA: Defense Technical Information Center, October 1997. http://dx.doi.org/10.21236/ada330610.

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Kunert, Charles. A taxonomic study of the marine algae of Netarts Bay, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.969.

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Muscatine, Leonard. Mechanism by Which Cold Shock Evokes Exocytosis of Symbiotic Algae in Marine Cnidarians. Fort Belvoir, VA: Defense Technical Information Center, May 1993. http://dx.doi.org/10.21236/ada278701.

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Johnson, Zackary. Marine Algae Industrialization Consortium (MAGIC): Combining biofuel and high-value bioproducts to meet the RFS. Office of Scientific and Technical Information (OSTI), May 2024. http://dx.doi.org/10.2172/2368752.

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Sukenik, Assaf, Paul Roessler, and John Ohlrogge. Biochemical and Physiological Regulation of Lipid Synthesis in Unicellular Algae with Special Emphasis on W-3 Very Long Chain Lipids. United States Department of Agriculture, January 1995. http://dx.doi.org/10.32747/1995.7604932.bard.

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Various unicellular algae produce omega-3 (w3) very-long-chain polyunsaturated fatty acids (VLC-PUFA), which are rarely found in higher plants. In this research and other studies from our laboratories, it has been demonstrated that the marine unicellular alga Nannochloropsis (Eustigmatophyceae) can be used as a reliable and high quality source for the w3 VLC-PUFA eicosapentaenoic acid (EPA). This alga is widely used in mariculture systems as the primary component of the artificial food chain in fish larvae production, mainly due to its high EPA content. Furthermore, w3 fatty acids are essential for humans as dietary supplements and may have therapeutic benefits. The goal of this research proposal was to understand the physiological and biochemical mechanisms which regulate the synthesis and accumulation of glycerolipids enriched with w3 VLC-PUFA in Nannochloropsis. The results of our studies demonstrate various aspects of lipid synthesis and its regulation in the alga: 1. Variations in lipid class composition imposed by various environmental conditions were determined with special emphasis on the relative abundance of the molecular species of triacylglycerol (TAG) and monogalactosyl diacylglycerol (MGDG). 2. The relationships between the cellular content of major glycerolipids (TAG and MGDG) and the enzymes involved in their synthesis were studied. The results suggested the importance of UDP-galactose diacylglycerol galactosyl (UDGT) in regulation of the cellular level of MGDG. In a current effort we have purified UDGT several hundredfold from Nannochloropsis. It is our aim to purify this enzyme to near homogeneity and to produce antibodies against this enzyme in order to provide the tools for elucidation of the biochemical mechanisms that regulate this enzyme and carbon allocation into galactolipids. 3. Our in vitro and in vivo labeling studies indicated the possibility that phosphatidylcholine (PC) and phosphatidylethanolamine (PE) are associated with desaturation of the structural lipids, whereas shorter chain saturated fatty acids are more likely to be incorporated into TAG. 4. Isolation of several putative mutants of Nannochloropsis which appear to have different lipid and fatty acid compositions than the wild type; a mutant of a special importance that is devoid of EPA was fully characterized. In addition, we could demonstrate the feasibility of Nannochloropsis biomass production for aquaculture and human health: 1) We demonstrated in semi-industrial scale the feasibility of mass production of Nannochloropsis biomass in collaboration with the algae plant NBT in Eilat; 2) Nutritional studies verified the importance algal w3 fatty acids for the development of rats and demonstrated that Nannochloropsis biomass fed to pregnant and lactating rats can benefit their offspring.
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Andersen, Robert A. Marine Phytoplankton Culture Collection: Resources for Algal Biotechnology. Fort Belvoir, VA: Defense Technical Information Center, January 1997. http://dx.doi.org/10.21236/ada353352.

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Vakharia, Vikram, Shoshana Arad, Yonathan Zohar, Yacob Weinstein, Shamila Yusuff, and Arun Ammayappan. Development of Fish Edible Vaccines on the Yeast and Redmicroalgae Platforms. United States Department of Agriculture, February 2013. http://dx.doi.org/10.32747/2013.7699839.bard.

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Betanodaviruses are causative agents of viral nervous necrosis (VNN), a devastating disease of cultured marine fish worldwide. Betanodavirus (BTN) genome is composed of two single-stranded, positive-sense RNA molecules. The larger genomic segment, RNA1 (3.1 kb), encodes the RNA-dependent RNA polymerase, while the smaller genomic segment, RNA 2 (1.4kb), encodes the coat protein. This structural protein is the host-protective antigen of VNN which assembles to form virus-like particles (VLPs). BTNs are classified into four genotypes, designated red-spotted grouper nervous necrosis virus (RGNNV), barfin flounder nervous necrosis virus (BFNNV), tiger puffer nervous necrosis virus (TPNNV), and striped jack nervous necrosis virus (SJNNV), based on phylogenetic analysis of the coat protein sequences. RGNNV type is quite important as it has a broad host-range, infecting warm-water fish species. At present, there is no commercial vaccine available to prevent VNN in fish. The general goal of this research was to develop oral fish vaccines in yeast and red microalgae (Porphyridium sp.) against the RGNNV genotype. To achieve this, we planned to clone and sequence the coat protein gene of RGNNV, express the coat protein gene of RGNNV in yeast and red microalgae and evaluate the immune response in fish fed with recombinantVLPs antigens produced in yeast and algae. The collaboration between the Israeli group and the US group, having wide experience in red microalgae biochemistry, molecular genetics and large-scale cultivation, and the development of viral vaccines and eukaryotic protein expression systems, respectively, was synergistic to produce a vaccine for fish that would be cost-effective and efficacious against the betanodavirus infection.
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Suddleson, Marc, and Porter Hoagland. Workshop on the socio-economic effects of marine and fresh water harmful algal blooms in the United States. Woods Hole Oceanographic Institution, March 2021. http://dx.doi.org/10.1575/1912/27896.

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The US National Office for Harmful Algal Blooms at the Woods Hole Oceanographic Institution (WHOI) and the NOAA National Centers for Coastal Ocean Science (NCCOS) held a virtual workshop comprising four sessions between July 27 and August 5, 2020. This report summarizes the workshop proceedings and presents recommendations developed by participants during the discussion. The recommendations advance an assessment framework and a national research agenda that will lead to comprehensive evaluations of the socio-economic effects of harmful algal blooms (HABs) in fresh water (primarily the Great Lakes) and marine waters of the United States.
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Ammann, Karah, Eric Dinger, and David Lohse. Rocky intertidal monitoring: 2019?2020 results from Redwood National and State Parks. National Park Service, 2023. http://dx.doi.org/10.36967/2301673.

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This report presents the results of the monitoring surveys done in 2019 and 2020 of the rocky intertidal community at three sites within the Redwood National and State Parks (RNSP) in Del Norte County, California. These sites are part of MARINe (Multi-Agency Rocky Intertidal Network), a regional intertidal monitoring network sponsored by the Bureau of Ocean Energy Management (BOEM), with additional funding and support from local and state governments, universities, and private organizations (see www.marine.ucsc.edu). Funding for annual monitoring in RNSP is provided by the National Park Service (NPS) Klamath Network (KLMN) through a cooperative agreement with the University of California at Santa Cruz (UCSC). Field sampling is accomplished through a collaborative effort between UCSC and RNSP staff. The 2019 and 2020 field crews each consisted of 4 UCSC biologists and three RNSP staff members. This monitoring program, adapted from MARINe protocols, was designed to identify and follow temporal trends in populations of the common and/or ecologically important organisms in the rocky intertidal community at three index sites within the RNSP. To accomplish this, sites are sampled once a year, and data are collected from permanent plots established to monitor changes in sessile invertebrates, algae, and the ochre sea star (Pisaster ochraceus), and from permanent transects to monitor surfgrass (Phyllospadix spp.) and sea palm (Postelsia palmaeformis). These data are utilized to determine annual status of the community and archived for future use to explore broader spatial and temporal trends. All of the monitored populations varied to some degree over the course of 2019?2020. The KLMN rocky intertidal monitoring program (?RNSP rocky intertidal monitoring program? in previous reports; Amman et al. 2022), which started in RNSP in 2004, continues to progress successfully. The procedures for data collection, data management, data analysis, and reporting are regularly assessed and have undergone some revisions based on the evolution of the monitoring program (Ammann and Raimondi 2008; protocol revision in progress [Eric Dinger, National Park Service ecologist, pers. comm., Jan 23, 2023]). As such, this year?s report follows on Amman et al. (2022) which introduced new reporting. Amman et al. (2022) and this report include broader scale biodiversity data collected through Coastal Biodiversity Survey protocol. These biodiversity data are sampled at 2 of the 3 sites every sampling period. This report differs from earlier annual reports in shifting from a full summary report, with in-depth analysis, to an administrative data summary report that does not contain in-depth analyses. Subsequent reports will follow this format. This report also reports on optional MARINe protocol data we collected that are not part of the KLMN rocky intertidal protocol (e.g., mussel sizes and sea palm measurements). Some of these optional data measurements may be discontinued in future years. More comprehensive trend analyses of the data are available in the program?s 5-year trend reports, the first of which included data through 2013 (Ammann et al. 2017) and the consecutive trend paper through 2018 (Lohse et al. in press).
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