journal
https://read.qxmd.com/read/37360291/china-s-growing-influence-in-the-global-carrageenan-industry-and-implications-for-indonesia
#1
JOURNAL ARTICLE
Jing Zhang, Scott Waldron, Zannie Langford, Boedi Julianto, Adam Martin Komarek
China has reconfigured the global value chains of a wide range of commodities. This includes carrageenan, a polysaccharide extracted from specific types of red seaweeds used as a gelling and thickening agent in a wide range of applications. In the past 20 years, China has moved to centre stage in the global carrageenan processing sector, with wide-ranging implications for seaweed producing nations and farmers. This is especially the case for Indonesia, a pivotal carrageenan seaweeds producer that exports almost all seaweed to China, cemented by large Chinese investments in processing in Indonesia...
June 8, 2023: Journal of Applied Phycology
https://read.qxmd.com/read/37360290/high-spatial-and-temporal-variation-in-biomass-composition-of-the-novel-aquaculture-target-ecklonia-radiata
#2
JOURNAL ARTICLE
Jacob Nepper-Davidsen, Christopher R K Glasson, Rebecca J Lawton, Marie Magnusson
UNLABELLED: The biomass composition of kelp varies within species both spatially and temporally. However, this variation in biomass quality has not yet been investigated for the native kelp Ecklonia radiata within New Zealand, where the kelp is a target for the emerging seaweed aquaculture industry. In this study we quantified spatial and temporal variation in the composition of E. radiata biomass, collected from 12 sites around the North Island of New Zealand and from 12 months across a full year at a single site ( n  = 138)...
April 28, 2023: Journal of Applied Phycology
https://read.qxmd.com/read/37249919/biology-farming-and-applications-of-economically-important-red-seaweed-gracilaria-edulis-s-g-gmelin-p-c-silva-a-concise-review
#3
REVIEW
Satej Bhushan, V Veeragurunathan, Bhavik K Bhagiya, S Gopala Krishnan, Arup Ghosh, Vaibhav A Mantri
UNLABELLED: Gracilaria edulis is one of the most studied agarophytes, especially in tropical regions like India because of its natural abundance. Apart from the Indian peninsula, it is widely distributed in tropical and subtropical regions. The taxonomy of G. edulis is evolving; currently G. edulis is the taxonomically accepted name, however several phylogenetic and morphological investigations supported its inclusion in the genus Hydropuntia . In addition to the conventional farming methods like the tube net and raft methods which use clonally propagated seed material, spore-based planting materials like carpospores have been employed to cultivate G...
2023: Journal of Applied Phycology
https://read.qxmd.com/read/37249918/wastewater-treatment-by-high-density-algal-flocs-for-nutrient-removal-and-biomass-production
#4
JOURNAL ARTICLE
Styliani E Biliani, Ioannis D Manariotis
UNLABELLED: The present work investigated the efficiency of algal flocs biomass for the treatment of primary and secondary effluent in static and mixing conditions under different hydraulic retention time (HRT). Primary effluent fed cultures created a high-density biomass of 2.8 and 3.8 g L-1 under static and mixing conditions, respectively. Secondary effluent was more effective in order to create even higher density biomass of 7.8 and 6 g L-1 under static and mixing conditions, respectively...
2023: Journal of Applied Phycology
https://read.qxmd.com/read/36320446/concise-review-of-green-algal-genus-monostroma-thuret
#5
REVIEW
Manpreet Kaur, Swarna Kala, Aseema Parida, Felix Bast
Monostroma (Ulotrichales, Chlorophyta) is the most intensively cultivated genus among green seaweeds, accounting for over 90% of total green algal cultivation. It is commonly found in the eulittoral zones of marine and estuarine habitats, thus contributing significantly to the ecology of the coastal ecosystem. Morphologically, the frond of Monostroma is blade-like with eponymous one-cell thickness; therefore, it is also known as "Slender sea lettuce". Monostroma nitidum is often used for salad ingredients, boiled tsukudani, soups, etc...
October 27, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/36259048/a-concise-review-of-the-bioactivity-and-pharmacological-properties-of-the-genus-codium-bryopsidales-chlorophyta
#6
REVIEW
Maria Dyah Nur Meinita, Dicky Harwanto, Jae-Suk Choi
The genus Codium is one of the most important genera of marine green macroalgae. Its distribution is widespread worldwide and it has a high degree of diversity in species and characteristics. This genus plays an important ecological role in marine ecosystems as it is a primary producer. However, some species in the genus Codium are invasive species and may disturb the functioning of the ecosystem. Economically, Codium has promising potential as a source of diverse nutritional and pharmacological compounds. Codium is edible, has a high nutrient value, and is rich in bioactive compounds...
October 13, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/36249348/sensory-descriptors-for-three-edible-chilean-seaweeds-and-their-relations-to-umami-components-and-instrumental-texture
#7
JOURNAL ARTICLE
Valentina Figueroa, Andrea Bunger, Jaime Ortiz, José Miguel Aguilera
Although seaweeds exhibit many benefits as a food source, few studies have characterized their sensory attributes. An expert nine-member panel developed a vocabulary with 25 descriptors to describe the appearance, aroma, flavor, texture, and aftertaste of raw and cooked seaweeds consumed in Chile: Durvillaea antarctica , Pyropia spp., and Ulva lactuca . Subsequently, the vocabulary was used in a ranking descriptive analysis (RDA) to evaluate the sensory properties and relate them with physicochemical and physical data...
October 7, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/36033835/skinny-kelp-saccharina-angustissima-provides-valuable-genetics-for-the-biomass-improvement-of-farmed-sugar-kelp-saccharina-latissima
#8
JOURNAL ARTICLE
Yaoguang Li, Schery Umanzor, Crystal Ng, Mao Huang, Michael Marty-Rivera, David Bailey, Margaret Aydlett, Jean-Luc Jannink, Scott Lindell, Charles Yarish
Saccharina latissima (sugar kelp) is one of the most widely cultivated brown marine macroalgae species in the North Atlantic and the eastern North Pacific Oceans. To meet the expanding demands of the sugar kelp mariculture industry, selecting and breeding sugar kelp that is best suited to offshore farm environments is becoming necessary. To that end, a multi-year, multi-institutional breeding program was established by the U.S. Department of Energy's (DOE) Advanced Research Projects Agency-Energy (ARPA-E) Macroalgae Research Inspiring Novel Energy Resources (MARINER) program...
August 20, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/36033834/the-bio-economic-seaweed-model-besem-for-modelling-tropical-seaweed-cultivation-experimentation-and-modelling
#9
JOURNAL ARTICLE
P A J van Oort, N Rukminasari, G Latama, A Verhagen, A K van der Werf
The Bio Economic Seaweed Model (BESeM) is a model designed for modelling tropical seaweed cultivation. BESeM can simulate the common tropical seaweed cultivation system with multiple harvests per year, clonal reproduction and labour intensive harvesting and replanting activities. Biomass growth is modelled as a sigmoid, with growth being initially exponentially and eventually flattening off towards a maximum weight per plant or per square meter ( w f,max ). To estimate the latter, longer duration experiments than normal are needed - in the order of 100 days rather than 45 days...
August 19, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/35079200/rapid-detection-of-chattonella-marina-by-pcr-combined-with-dot-lateral-flow-strip
#10
JOURNAL ARTICLE
Chunyun Zhang, Qixin Chen, Fuguo Liu, Yin Liu, Yuanyuan Wang, Guofu Chen
In this study a novel technique referred to as PCR combined with dot lateral flow strip (PCDS) is proposed and its application to the detection of harmful microalgae was explored. For this purpose, using Chattonella marina as a test algal species, PCR targeting the D1-D2 region of large subunit ribosomal gene of this alga was performed with the tagged specific primers. The amplicons were then analyzed with the manually prepared dot lateral flow strip, and the strip could produce a test dot and a control dot that are naked-eye detectable, indicating the successful establishment of PCDS...
January 21, 2022: Journal of Applied Phycology
https://read.qxmd.com/read/35673609/glycogen-poly-3-hydroxybutyrate-and-pigment-accumulation-in-three-synechocystis-strains-when-exposed-to-a-stepwise-increasing-salt-stress
#11
JOURNAL ARTICLE
K Meixner, C Daffert, D Dalnodar, K Mrázová, K Hrubanová, V Krzyzanek, J Nebesarova, O Samek, Z Šedrlová, E Slaninova, P Sedláček, S Obruča, I Fritz
The cyanobacterial genus Synechocystis is of particular interest to science and industry because of its efficient phototrophic metabolism, its accumulation of the polymer poly(3-hydroxybutyrate) (PHB) and its ability to withstand or adapt to adverse growing conditions. One such condition is the increased salinity that can be caused by recycled or brackish water used in cultivation. While overall reduced growth is expected in response to salt stress, other metabolic responses relevant to the efficiency of phototrophic production of biomass or PHB (or both) have been experimentally observed in three Synechocystis strains at stepwise increasing salt concentrations...
2022: Journal of Applied Phycology
https://read.qxmd.com/read/35601997/phlorotannins-bioactivity-and-extraction-perspectives
#12
REVIEW
Lekshmi R G Kumar, Preethy Treesa Paul, K K Anas, C S Tejpal, N S Chatterjee, T K Anupama, Suseela Mathew, C N Ravishankar
Phlorotannins, a seaweed based class of polyphenolic compounds, have proven to possess potential bioactivities such as antioxidant, antimicrobial, anti-allergic, anti-diabetic, anti-inflammatory, anti-cancerous, neuroprotection etc. These bioactivities have further increased demand globally and sustainable techniques such as supercritical fluid extraction, microwave assisted extraction, enzyme assisted extraction, extraction using deep eutectic solvents etc. are being explored currently for production of phlorotannin-rich extracts...
2022: Journal of Applied Phycology
https://read.qxmd.com/read/35309180/-thorsmoerkia-curvula-gen-et-spec-nov-trebouxiophyceae-chlorophyta-a-semi-terrestrial-microalga-from-iceland-exhibits-high-levels-of-unsaturated-fatty-acids
#13
JOURNAL ARTICLE
Cecilia Nicoletti, Lenka Procházková, Linda Nedbalová, Réka Mócsai, Friedrich Altmann, Andreas Holzinger, Daniel Remias
A terrestrial green alga was isolated at Iceland, and the strain (SAG 2627) was described for its morphology and phylogenetic position and tested for biotechnological capabilities. Cells had a distinctly curved, crescent shape with conical poles and a single parietal chloroplast. Phylogenetic analyses of 18S rDNA and rbc L markers placed the strain into the Trebouxiophyceae (Chlorophyta). The alga turned out to belong to an independent lineage without an obvious sister group within the Trebouxiophyceae. Based on morphological and phylogenetic data, the strain was described as a new genus and species, Thorsmoerkia curvula gen...
December 2021: Journal of Applied Phycology
https://read.qxmd.com/read/34866795/extraction-optimization-physicochemical-characterization-and-antioxidant-activity-of-polysaccharides-from-rhodosorus-sp-scsio-45730
#14
JOURNAL ARTICLE
Na Wang, Lumei Dai, Zishuo Chen, Tao Li, Jiayi Wu, Houbo Wu, Hualian Wu, Wenzhou Xiang
Microalgal polysaccharides have been reported in many studies due to their uniqueness, biocompatibility, and high value, and Rhodosorus sp. SCSIO-45730 was an excellent source of polysaccharides and β-glucans. However, the polysaccharides from the red unicellular alga Rhodosorus sp. SCSIO-45730 have barely been studied. In this work, hot water extraction of Rhodosorus sp. SCSIO-45730 polysaccharides (RSP) was optimized using response surface methodology (RSM) based on Box-Behnken design (BBD). The maximum RSP yield (9...
November 30, 2021: Journal of Applied Phycology
https://read.qxmd.com/read/34539078/effect-of-storage-on-plant-biostimulant-and-bioactive-properties-of-freeze-dried-chlorella-vulgaris-biomass
#15
JOURNAL ARTICLE
Wendy A Stirk, Péter Bálint, McMaster Vambe, Manoj G Kulkarni, Johannes van Staden, Vince Ördög
Microalgae are potential plant biostimulants and biocontrol agents. A major hurdle towards their commercialization is the production of large volumes of biomass at the correct time of year. Secondary metabolites are unstable and the "shelf-life" of bioactive microalgal biomass needs to be investigated. The aim of the study was to investigate the effects of storage conditions on freeze-dried microalgae to determine how long the biomass retained its growth promoting and bioactive properties under various temperature and light conditions...
September 14, 2021: Journal of Applied Phycology
https://read.qxmd.com/read/34456508/green-extraction-of-proteins-umami-and-other-free-amino-acids-from-brown-macroalgae-ascophyllum-nodosum-and-fucus-vesiculosus
#16
JOURNAL ARTICLE
Viruja Ummat, Marco Garcia-Vaquero, Mahesha M Poojary, Marianne N Lund, Colm O'Donnell, Zhihang Zhang, Brijesh K Tiwari
Seaweeds are a valuable potential source of protein, as well as free amino acids (FAAs) with umami flavour which are in high demand by the food industry. The most commonly used flavouring agents in the food industry are chemically synthesised and therefore are subject to concerns regarding their safety and associated consumer resistance. This study focuses on the effects of extraction time (1 and 2 h) and solvents (0.1 M HCl, 1% citric acid and deionised water) on the extraction of protein and FAAs including umami FAAs from Irish brown seaweeds ( Ascophyllum nodosum and Fucus vesiculosus )...
August 24, 2021: Journal of Applied Phycology
https://read.qxmd.com/read/33994663/correction-to-docking-and-in-silico-toxicity-assessment-of-arthrospira-compounds-as-potential-antiviral-agents-against-sars-cov-2
#17
Léna Petit, Léa Vernès, Jean-Paul Cadoret
[This corrects the article DOI: 10.1007/s10811-021-02372-9.].
May 10, 2021: Journal of Applied Phycology
https://read.qxmd.com/read/33776210/docking-and-in-silico-toxicity-assessment-of-arthrospira-compounds-as-potential-antiviral-agents-against-sars-cov-2
#18
JOURNAL ARTICLE
Léna Petit, Léa Vernès, Jean-Paul Cadoret
A race is currently being launched as a result of the international health situation. This race aims to find, by various means, weapons to counter the Covid-19 pandemic now widespread on all continents. The aquatic world and in particular that of photosynthetic organisms is regularly highlighted but paradoxically little exploited in view of the tremendous possibilities it offers. Computational tools allow not only to clear the existence and activity of many molecules but also to model their relationships with receptors identified in potential hosts...
March 20, 2021: Journal of Applied Phycology
https://read.qxmd.com/read/33568889/bio-processing-of-macroalgae-palmaria-palmata-metabolite-fractionation-from-pressed-fresh-material-and-ensiling-considerations-for-long-term-storage
#19
JOURNAL ARTICLE
J A Gallagher, J M M Adams, L B Turner, M E Kirby, T A Toop, M W Mirza, M K Theodorou
Red algae, belonging to the phylum Rhodophyta, contain an abundance of useful chemicals including bioactive molecules and present opportunities for the production of different products through biorefinery cascades. The rhodophyte Palmaria palmata , commonly termed dulse or dillisk, grows predominantly on the northern coasts of the Atlantic and Pacific Oceans and is a well-known snack food. Due to its abundance, availability and cultivation capacity, P. palmata was selected for study as a potential candidate for a biorefinery process...
2021: Journal of Applied Phycology
https://read.qxmd.com/read/33191980/saved-by-seaweeds-phyconomic-contributions-in-times-of-crises
#20
JOURNAL ARTICLE
Ole G Mouritsen, Prannie Rhatigan, M Lynn Cornish, Alan T Critchley, José Lucas Pérez-Lloréns
Seaweeds (macroalgae) are, together with microalgae, main contributors to the Earth's production of organic matter and atmospheric oxygen as well as fixation of carbon dioxide. In addition, they contain a bounty of fibres and minerals, as well as macro- and micronutrients that can serve both technical and medicinal purposes, as well as be a healthy and nutritious food for humans and animals. It is therefore natural that seaweeds and humans have had a myriad of interwoven relationships both on evolutionary timescales as well as in recent millennia and centuries all the way into the Anthropocene...
November 7, 2020: Journal of Applied Phycology
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