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Arthrospira platensis

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https://www.readbyqxmd.com/read/29978380/molecular-insight-into-the-metabolic-activities-of-a-protein-rich-micro-alga-arthrospira-platensis-by-de-novo-transcriptome-analysis
#1
Venkatesh Kumaresan, Anbazahan Sannasimuthu, Mariadhas Valan Arasu, Naif Abdullah Al-Dhabi, Jesu Arockiaraj
To gain genetic insights into the protein-rich microalga, the transcriptome of Arthrospira platensis was sequenced using Illumina technology and de novo assembly was carried out. A total of 6023 transcripts were present in the transcriptome among which 4616 transcripts were annotated with specific functions. Gene ontology analysis revealed that the genes are mainly involved in three major functions such as biological (16.19%), cellular (41.47%) and molecular (42.34%) processes. Pathway analysis indicated that majority of genes are involved in amino acid biosynthesis and metabolism which is depicting the protein-rich nature of spirulina...
July 5, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29966973/anticancer-effect-of-the-water-extract-of-a-commercial-spirulina-arthrospira-platensis-product-on-the-human-lung-cancer-a549-cell-line
#2
Arkadiusz Czerwonka, Katarzyna Kaławaj, Adrianna Sławińska-Brych, Marta K Lemieszek, Magdalena Bartnik, Krzysztof K Wojtanowski, Barbara Zdzisińska, Wojciech Rzeski
Spirulina is a well-described and popular dietary supplement derived from Arthrospira algae. In the present study, the anticancer potential of a water extract of a commercial Spirulina product (SE) against the human non-small-cell lung carcinoma A549 cell line was evaluated. After qualitative analysis, we investigated the effect of SE on cell viability, proliferation, and morphology. Furthermore, the influence of SE on regulation of the cell cycle, induction of apoptosis in lung cancer cells, and expression of cell cycle/apoptosis-related proteins was evaluated...
June 28, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29906715/comprehensive-pulsed-electric-field-pef-system-analysis-for-microalgae-processing
#3
Leandro Buchmann, Robin Bloch, Alexander Mathys
Pulsed electric field (PEF) is an emerging nonthermal technique with promising applications in microalgae biorefinery concepts. In this work, the flow field in continuous PEF processing and its influencing factors were analyzed and energy input distributions in PEF treatment chambers were investigated. The results were obtained using an interdisciplinary approach that combined multiphysics simulations with ultrasonic Doppler velocity profiling (UVP) and rheological measurements of Arthrospira platensis suspensions as a case study for applications in the biobased industry...
June 7, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29881359/immunohistochemical-characterization-of-pept1-and-ghrelin-in-gastrointestinal-tract-of-zebrafish-effects-of-spirulina-vegetarian-diet-on-the-neuroendocrine-system-cells-after-alimentary-stress
#4
Patrizia Lo Cascio, Concetta Calabrò, Clara Bertuccio, Carmelo Iaria, Fabio Marino, Maria G Denaro
Gastrointestinal function in vertebrates is influenced by stressors, such as fasting and refeeding, different types of diet and hormonal factors. The aim of this paper was to analyze the effect of a Spirulina ( Arthrospira platensis ) diet, a microalga known for its nutraceutical properties, on the gastrointestinal tract of zebrafish ( Danio rerio ) regarding expression of oligopeptide transporter 1 (PepT1) and ghrelin (GHR). Food deprivation and refeeding was investigated to elucidate expression of PepT1 and GHR at a gastrointestinal level and the zebrafish compensatory mechanism...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29876145/cytotoxic-effects-of-zinc-oxide-nanoparticles-on-cyanobacterium-spirulina-arthrospira-platensis
#5
Sinouvassane Djearamane, Yang Mooi Lim, Ling Shing Wong, Poh Foong Lee
Background: The extensive usage of zinc oxide nanoparticles (ZnO NPs) in industrial and consumer products raises the risk of releasing their residues into the aquatic environment. The presence of ZnO NPs in the aquatic environment could potentially cause cytotoxic effects on aquatic organisms. Thus, investigating the cytotoxic effects of ZnO NPs on microalgae, which form the base for the food web of aquatic biota, is essential to gain information regarding the ecotoxicological effects of metallic oxide nanoparticles in the aquatic ecosystem...
2018: PeerJ
https://www.readbyqxmd.com/read/29873533/zinc-removal-from-model-solution-and-wastewater-by-arthrospira-spirulina-platensis-biomass
#6
Inga Zinicovscaia, Nikita Yushin, Margarita Shvetsova, Marina Frontasyeva
The biosorption of zinc from model solution as well as wastewater by Arthrospira (Spirulina) platensis biomass was studied. Adsorption capacity of the biosorbent was investigated as a function of contact time between adsorbent and zinc, the initial metals and sorbent concentration, pH value, and temperature. The ability of Arthrospira biomass for zinc biosorption exhibited a maximum at the pH range 4-8. Equilibrium data fitted well with the Langmuir model as well as the Freundlich model with maximum adsorption capacity of 7...
July 29, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29852372/dietary-supplementation-of-spirulina-ameliorates-iron-induced-oxidative-stress-in-indian-knife-fish-notopterus-notopterus
#7
Deepali Mohanty, Luna Samanta
Iron though an essential cofactor for many proteins including haemoglobin and cytochromes, when in excess (>1 ppm in water and 100 ppm in fish tissue) elicits toxicity via Fenton reaction inducing oxidative stress. The present study aimed to evaluate the efficacy of dietary Spirulina (Arthrospira platensis) supplementation on waterborne-iron induced oxidative stress in the tissues of Notopterus notopterus. Juvenile fishes were divided randomly into 4 groups, namely, Group-I: control fed with commercial diet only, Group-II, III and IV treated with 0...
July 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29775741/replacement-of-fishmeal-by-spirulina-arthrospira-platensis-affects-growth-immune-related-gene-expression-in-gibel-carp-carassius-auratus-gibelio-var-cas-iii-and-its-challenge-against-aeromonas-hydrophila-infection
#8
Shenping Cao, Peiyu Zhang, Tao Zou, Shuzhan Fei, Dong Han, Junyan Jin, Haokun Liu, Yunxia Yang, Xiaoming Zhu, Shouqi Xie
The present study examined the effect of dietary spirulina, Arthrospira platensis on growth performance, blood physiological indices, immune-related gene expressions and resistance of juvenile gibel carp against Aeromonas hydrophila infection. Four isonitrogenous (360 g kg-1 ) and isolipidic (90 g kg-1 ) diets were formulated with containing different levels of spirulina powder of 0 g (SP0, the control diet), 3.38 g (SP3.38), 6.76 g (SP6.76) and 13.52 g (SP13.52) per 100 g diet to replace 0%, 25%, 50% and 100% of fishmeal protein, respectively...
August 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29773168/m%C3%A3-ssbauer-spectroscopic-study-of-transformations-of-iron-species-by-the-cyanobacterium-arthrospira-platensis-formerly-spirulina-platensis
#9
Yurii D Perfiliev, Alexandr Kh Tambiev, Maxim A Konnychev, Anatoly V Skalny, Elena S Lobakova, Mikhail P Kirpichnikov
In the present paper, Mössbauer spectroscopic studies of dry biomass samples of the cyanobacterium Arthrospira platensis (formerly known as Spirulina platensis) were performed with regard to metabolic iron accumulation. 57 Fe Mössbauer parameters of iron in the biomass correspond to ferrihydrite. Spectra of iron hydroxides in A. platensis biomass differ from those of iron complexes with ethylenediaminetetraacetic acid injected to Zarrouk culture medium. The limit of saturation of A. platensis trichomes with iron in the form of ferrihydrite was found to be 5 μg/ml (0...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29751637/fast-profiling-of-natural-pigments-in-different-spirulina-arthrospira-platensis-dietary-supplements-by-di-ft-icr-and-evaluation-of-their-antioxidant-potential-by-pre-column-dpph-uhplc-assay
#10
Eduardo Sommella, Giulio Maria Conte, Emanuela Salviati, Giacomo Pepe, Alessia Bertamino, Carmine Ostacolo, Francesca Sansone, Francesco Del Prete, Rita Patrizia Aquino, Pietro Campiglia
Arthrospira platensis , better known as Spirulina, is one of the most important microalgae species. This cyanobacterium possesses a rich metabolite pattern, including high amounts of natural pigments. In this study, we applied a combined strategy based on Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR-MS) and Ultra High-Performance Liquid Chromatography (UHPLC) for the qualitative/quantitative characterization of Spirulina pigments in three different commercial dietary supplements. FT-ICR was employed to elucidate the qualitative profile of Spirulina pigments, in both direct infusion mode (DIMS) and coupled to UHPLC...
May 11, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29746494/the-biomechanical-role-of-overall-shape-transformation-in-a-primitive-multicellular-organism-a-case-study-of-dimorphism-in-the-filamentous-cyanobacterium-arthrospira-platensis
#11
Atitheb Chaiyasitdhi, Wirat Miphonpanyatawichok, Mathis Oliver Riehle, Rungrueang Phatthanakun, Werasak Surareungchai, Worasom Kundhikanjana, Panwong Kuntanawat
Morphological transformations in primitive organisms have long been observed; however, its biomechanical roles are largely unexplored. In this study, we investigate the structural advantages of dimorphism in Arthrospira platensis, a filamentous multicellular cyanobacterium. We report that helical trichomes, the default shape, have a higher persistence length (Lp), indicating a higher resistance to bending or a large value of flexural rigidity (kf), the product of the local cell stiffness (E) and the moment of inertia of the trichomes' cross-section (I)...
2018: PloS One
https://www.readbyqxmd.com/read/29719662/antioxidant-effects-of-spirulina-platensis-arthrospira-platensis-on-cyclophosphamide-induced-testicular-injury-in-rats
#12
Mohammad Afkhami-Ardakani, Shapour Hasanzadeh, Rasoul Shahrooz, Norouz Delirezh, Hassan Malekinejad
Cyclophosphamide (CP) is known to reduce fertility. The protective effects of Spirulina plantesis (SP) against CP-induced testicular toxicity were investigated. Male Wistar rats were categorized into eight groups (n = 7). Four groups of rats were administered CP at a dose of 5 mg in 5 mL distilled water kg-1 per day orally. Two of these groups were received SP (500 and 1000 mg kg-1 per day) orally after CP administration. One of these groups was also received vitamin E (100 mg kg-1 per day) intraperitoneally...
2018: Veterinary Research Forum
https://www.readbyqxmd.com/read/29691628/performance-of-the-mixed-led-light-quality-on-the-growth-and-energy-efficiency-of-arthrospira-platensis
#13
Ruixin Mao, Shuangsheng Guo
The effect of mixed light quality with red, blue, and green LED lamps on the growth of Arthrospira platensis was studied, so as to lay the theoretical and technical basis for establishing a photo-bioreactor lighting system for application in space. Meanwhile, indexes, like morphology, growth rate, photosynthetic pigment compositions, energy efficiency, and main nutritional components, were measured respectively. The results showed that the blue light combined with red light could decrease the tightness of filament, and the effect of green light was opposite...
June 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29672750/effect-of-dietary-spirulina-arthrospira-platensis-on-the-growth-performance-antioxidant-enzyme-activity-nutrient-digestibility-cecal-microflora-excreta-noxious-gas-emission-and-breast-meat-quality-of-broiler-chickens
#14
J H Park, S I Lee, I H Kim
This study examined the effects of dietary Spirulina (Arthrospira) platensis supplementation on growth performance, antioxidant enzyme activity, nutrient digestibility, cecal microflora, excreta noxious gas emission, organ weight and breast meat quality in broiler chickens. In total, 800 Ross 308 male broiler chickens (1-d-old) were randomly divided into 5 dietary treatments with 10 replicate cages (16 birds/replicate) per treatment for 5 wk. The dietary treatments were a control basal diet without Spirulina or with 0...
July 1, 2018: Poultry Science
https://www.readbyqxmd.com/read/29665728/influence-of-solvent-on-the-yield-and-chemical-composition-of-liquid-products-of-hydrothermal-liquefaction-of-arthrospira-platensis-as-revealed-by-fourier-transform-ion-cyclotron-resonance-mass-spectrometry
#15
Mikhail S Vlaskin, Anatoly V Grigorenko, Yury I Kostyukevich, Evgeny N Nikolaev, Gleb N Vladimirov, Nadezhda I Chernova, Sophia V Kiseleva, Oleg S Popel, Andrey Z Zhuk
Yields of liquid products (bio-oil and residual organics in aqueous solution) of hydrothermal liquefaction (at 300℃ and 60 min) of own cultivated Arthrospira platensis using different solvents have been determined. Nonpolar hexane, moderately polar dichloromethane, and relatively more polar acetonitrile have been used. High-resolution mass spectrometry based on linear quadrupole ion trap and Fourier transform mass spectrometer (LTQ FT) has been used for liquid sample characterization. Concentration of bio-oil in a unit of solvent volume after solvent extraction took the following arrangement: acetonitrile > dichloromethane > hexane...
January 1, 2018: European Journal of Mass Spectrometry
https://www.readbyqxmd.com/read/29622214/nutritional-analysis-of-spirulina-dietary-supplements-optimization-procedure-of-ultrasound-assisted-digestion-for-multielemental-determination
#16
Bárbara D Neher, Silvana M Azcarate, José M Camiña, Marianela Savio
Arthrospira platensis and Arthrospira maxima are a type of blue-green microalga used as a dietary supplement (Spirulina). A low time-consuming ultrasound-assisted digestion (UAD) of Spirulina supplements for multielemental determination by microwave induced plasma atomic emission spectrometry (MPAES) was performed. Several parameters such as acid concentration (AC), thermostated water bath (TWB), digestion time (DT) and UAD - probe or bath - affecting the digestion process were evaluated through a full factorial design...
August 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29533656/quantitative-isotope-dilution-high-resolution-mass-spectrometry-analysis-of-multiple-intracellular-metabolites-in-clostridium-autoethanogenum-with-uniformly-13-c-labeled-standards-derived-from-spirulina
#17
Sarah Schatschneider, Salah Abdelrazig, Laudina Safo, Anne M Henstra, Thomas Millat, Dong-Hyun Kim, Klaus Winzer, Nigel P Minton, David A Barrett
We have investigated the applicability of commercially available lyophilized spirulina ( Arthrospira platensis), a microorganism uniformly labeled with 13 C, as a readily accessible source of multiple 13 C-labeled metabolites suitable as internal standards for the quantitative determination of intracellular bacterial metabolites. Metabolites of interest were analyzed by hydrophilic-interaction liquid chromatography coupled with high-resolution mass spectrometry. Multiple internal standards obtained from uniformly (U)-13 C-labeled extracts from spirulina were used to enable isotope-dilution mass spectrometry (IDMS) in the identification and quantification of intracellular metabolites...
April 3, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29504073/application-of-physicochemical-treatment-allows-reutilization-of-arthrospira-platensis-exhausted-medium-an-investigation-of-reusing-medium-in-arthrospira-platensis-cultivation
#18
Lauris Del Carmen Mejia-da-Silva, Marcelo Chuei Matsudo, Ana Lucia Morocho-Jacome, João Carlos Monteiro de Carvalho
Since cultivations of Arthrospira platensis have a high water demand, it is necessary to develop treatment methods for reusing the exhausted medium that may prevent environmental problems and obtaining useful biomass. The exhausted Schlösser medium obtained from A. platensis batch cultivation in bench-scale mini-tanks was treated by varying concentrations of different coagulants, ferric chloride (6, 10, and 14 mg L-1 ) or ferric sulfate (15, 25, and 35 mg L-1 ) and powdered activated carbon (PAC, 30 and 50 mg L-1 )...
March 5, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29495393/immunomodulatory-and-inhibitory-effect-of-immulina-%C3%A2-and-immunloges-%C3%A2-in-the-ig-e-mediated-activation-of-rbl-2h3-cells-a-new-role-in-allergic-inflammatory-responses
#19
Kurt Appel, Eduardo Munoz, Carmen Navarrete, Cristina Cruz-Teno, Andreas Biller, Eva Thiemann
Immulina® , a high-molecular-weight polysaccharide extract from the cyanobacterium Arthrospira platensis ( Spirulina ) is a potent activator of innate immune cells. On the other hand, it is well documented that Spirulina exerts anti-inflammatory effects and showed promising effects with respect to the relief of allergic rhinitis symptoms. Taking into account these findings, we decided to elucidate whether Immulina® , and immunLoges® (a commercial available multicomponent nutraceutical with Immulina® as a main ingredient) beyond immune-enhancing effects, might also exert inhibitory effects in the induced allergic inflammatory response and on histamine release from RBL-2H3 mast cells...
February 26, 2018: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29492105/direct-and-highly-productive-conversion-of-cyanobacteria-arthrospira-platensis-to-ethanol-with-cacl-2-addition
#20
Shimpei Aikawa, Kentaro Inokuma, Satoshi Wakai, Kengo Sasaki, Chiaki Ogino, Jo-Shu Chang, Tomohisa Hasunuma, Akihiko Kondo
Background: The cyanobacterium Arthrospira platensis shows promise as a carbohydrate feedstock for biofuel production. The glycogen accumulated in A. platensis can be extracted by lysozyme-degrading the peptidoglycan layer of the bacterial cell walls. The extracted glycogen can be converted to ethanol through hydrolysis by amylolytic enzymes and fermentation by the yeast Saccharomyces cerevisiae . Thus, in the presence of lysozyme, a recombinant yeast expressing α-amylase and glucoamylase can convert A...
2018: Biotechnology for Biofuels
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