Bibliografías temáticas / Autotrophic production

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Literatura académica sobre el tema "Autotrophic production"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 20 de febrero de 2023

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Artículos de revistas sobre el tema "Autotrophic production"

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Oh, S. E., K. S. Kim, H. C. Choi, J. Cho, and I. S. Kim. "Kinetics and physiological characteristics of autotrophic dentrification by denitrifying sulfur bacteria." Water Science and Technology 42, no. 3-4 (August 1, 2000): 59–68. http://dx.doi.org/10.2166/wst.2000.0359.

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To study the kinetics and physiology of autotrophic denitrifying sulfur bacteria, a steady-state anaerobic master culture reactor (MCR) was operated for over six months under a semi-continuous mode and nitrate limiting conditions using nutrient/mineral/buffer (NMB) medium containing thiosulfate and nitrate. Characteristics of the autotropic denitrifier were investigated through the cumulative gas production volume and rate, measured using an anaerobic respirometer, and through the nitrate, nitrite, and sulfate concentrations within the media. The bio-kinetic parameters were obtained based upon
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Duarte, Carlos M., and Just Cebrián. "The fate of marine autotrophic production." Limnology and Oceanography 41, no. 8 (December 1996): 1758–66. http://dx.doi.org/10.4319/lo.1996.41.8.1758.

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Gifuni, Imma, Giuseppe Olivieri, Antonino Pollio, Telma Teixeira Franco, and Antonio Marzocchella. "Autotrophic starch production by Chlamydomonas species." Journal of Applied Phycology 29, no. 1 (September 4, 2016): 105–14. http://dx.doi.org/10.1007/s10811-016-0932-2.

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Frolov, Evgenii N., Ilya V. Kublanov, Stepan V. Toshchakov, Evgenii A. Lunev, Nikolay V. Pimenov, Elizaveta A. Bonch-Osmolovskaya, Alexander V. Lebedinsky, and Nikolay A. Chernyh. "Form III RubisCO-mediated transaldolase variant of the Calvin cycle in a chemolithoautotrophic bacterium." Proceedings of the National Academy of Sciences 116, no. 37 (August 26, 2019): 18638–46. http://dx.doi.org/10.1073/pnas.1904225116.

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The Calvin–Benson–Bassham (CBB) cycle assimilates CO2for the primary production of organic matter in all plants and algae, as well as in some autotrophic bacteria. The key enzyme of the CBB cycle, ribulose-bisphosphate carboxylase/oxygenase (RubisCO), is a main determinant of de novo organic matter production on Earth. Of the three carboxylating forms of RubisCO, forms I and II participate in autotrophy, and form III so far has been associated only with nucleotide and nucleoside metabolism. Here, we report that form III RubisCO functions in the CBB cycle in the thermophilic chemolithoautotroph
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Trentin, Giulia, Veronica Lucato, Eleonora Sforza, and Alberto Bertucco. "Stabilizing autotrophic cyanophycin production in continuous photobioreactors." Algal Research 60 (December 2021): 102518. http://dx.doi.org/10.1016/j.algal.2021.102518.

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Olivieri, Giuseppe, Renato S. Coellho, Telma T. Franco, Antonino Pollio, and Antonio Marzocchella. "Polysaccharides production by autotrophic cultures of microalgae." New Biotechnology 31 (July 2014): S17. http://dx.doi.org/10.1016/j.nbt.2014.05.1651.

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Jeong, Byoung Kyong, Kazuhiro Fujiwara, and Toyoki Kozai. "Carbon Dioxide Enrichment in Autotrophic Micropropagation: Methods and Advantages." HortTechnology 3, no. 3 (July 1993): 332–34. http://dx.doi.org/10.21273/horttech.3.3.332.

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Autotrophic micropropagation has advantages over conventional micropropagation and can reduce costs of plantlet production. In this article, we describe advantages of autotrophic micropropagation and a practical and formulated method of enriching culture rooms with CO2.
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Geertz-Hansen, O., C. Montes, C. M. Duarte, K. Sand-Jensen, N. Marbá, and P. Grillas. "Ecosystem metabolism in a temporary Mediterranean marsh (Doñana National Park, SW Spain)." Biogeosciences Discussions 7, no. 4 (August 26, 2010): 6495–521. http://dx.doi.org/10.5194/bgd-7-6495-2010.

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Abstract. The metabolic balance of the open waters supporting submerged macrophytes of the Doñana marsh (SW Spain) was investigated in spring, when community production is highest. The marsh community was net autotrophic with net community production rates averaging 0.61 g C m−2 d−1, and gross production rates exceeding community respiration rates by, on average, 43%. Net community production increased greatly with increasing irradiance, with the threshold irradiance for communities to become net autotrophic being 42 to 255 μE m−2 s−1, below which communities became net heterotrophic. Examinat
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Geertz-Hansen, O., C. Montes, C. M. Duarte, K. Sand-Jensen, N. Marbá, and P. Grillas. "Ecosystem metabolism in a temporary Mediterranean marsh (Doñana National Park, SW Spain)." Biogeosciences 8, no. 4 (April 19, 2011): 963–71. http://dx.doi.org/10.5194/bg-8-963-2011.

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Abstract. The metabolic balance of the open waters supporting submerged macrophytes of the Doñana marsh (SW Spain) was investigated in spring, when community production is highest. The marsh community (benthic + pelagic) was net autotrophic with net community production rates averaging 0.61 g C m−2 d−1, and gross production rates exceeding community respiration rates by, on average, 43%. Net community production increased greatly with increasing irradiance, with the threshold irradiance for communities to become net autotrophic ranging from 42 to 255 μE m−2 s−1, with net heterotrophic at lower
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Ronan, Patrick, Otini Kroukamp, Steven N. Liss, and Gideon Wolfaardt. "Interaction between CO2-consuming autotrophy and CO2-producing heterotrophy in non-axenic phototrophic biofilms." PLOS ONE 16, no. 6 (June 15, 2021): e0253224. http://dx.doi.org/10.1371/journal.pone.0253224.

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As the effects of climate change become increasingly evident, the need for effective CO2 management is clear. Microalgae are well-suited for CO2 sequestration, given their ability to rapidly uptake and fix CO2. They also readily assimilate inorganic nutrients and produce a biomass with inherent commercial value, leading to a paradigm in which CO2-sequestration, enhanced wastewater treatment, and biomass generation could be effectively combined. Natural non-axenic phototrophic cultures comprising both autotrophic and heterotrophic fractions are particularly attractive in this endeavour, given t
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Tesis sobre el tema "Autotrophic production"

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Melville, Andrew J., and n/a. "Stable Isotope Tests of the Trophic Role of Estuarine Habitats for Fish." Griffith University. School of Environmental and Applied Science, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060824.144508.

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The role of autotrophic production in different coastal habitats in the production of fish in estuaries is an important consideration in coastal management and conservation. In the estuarine waters of the Australian east coast, many economically important fish species occur over mudflats lacking conspicuous vegetation. I used stable isotope analysis to examine where such fish ultimately derived their nutrition, in the subtropical waters of southern Moreton Bay, Queensland, Australia. I first tested traditional processing methodologies of autotroph samples, in this case of mangrove leaves, an
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Melville, Andrew J. "Stable Isotope Tests of the Trophic Role of Estuarine Habitats for Fish." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/367080.

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The role of autotrophic production in different coastal habitats in the production of fish in estuaries is an important consideration in coastal management and conservation. In the estuarine waters of the Australian east coast, many economically important fish species occur over mudflats lacking conspicuous vegetation. I used stable isotope analysis to examine where such fish ultimately derived their nutrition, in the subtropical waters of southern Moreton Bay, Queensland, Australia. I first tested traditional processing methodologies of autotroph samples, in this case of mangrove leaves, an
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Ferguson, April A. "Autotrophic and heterotrophic bacterial carbon production in two temperate lakes with contrasting food web structure." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ33481.pdf.

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Rackliffe, Daniel Riley. "Spatial Heterogeneity of Ecosystem Metabolism in a Shallow Wetland." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5757.

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Spatial heterogeneity in ecosystem metabolism may play a critical role in determining ecosystem functions. Variation in ecosystem metabolism between macrophyte patches in shallow wetlands at the extremes of freshwater habitats has not been investigated. We estimated ecosystem metabolism in mesocosms containing different macrophytes using 24-hour oxygen curves to test our hypotheses: (1) net aquatic production (NAP) during spring and summer would be similar among algal patches (metaphyton and Chara), (2) NAP in algal patches would be greater than patches dominated by the vascular plant Potamo
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Degrenne, Benoît. "Production d'hydrogène par Chlamydomonas reinhardtii en photobioréacteur : analyse des conditions de culture et mise en place d'un protocole autotrophe." Nantes, 2009. http://www.theses.fr/2009NANT2031.

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La production d'hydrogène par des microalgues apparaît comme intéressante dans l'optique de la production d'un vecteur énergétique sans émissions de gaz à effet de serre. En effet, la microalgue verte Chlamydomonas reinhardtii est capable de traduire cet hydrogène à partir d'eau. La production d'hydrogène, due à la présence d'une enzyme [Fe] – Hydrogénase est inhibée en présence d'oxygène. Le protocole de carence en soufre a ainsi été developpé par Melis et al. (2000), la production d'oxygène lors de la croissance des algues et la production d'hydrogène en conditions anaérobiques et en présenc
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Fukaï, Eri. "Importance du picoplancton autotrophe dans la biomasse et la production primaire des eaux marines oligotrophes : Atlantique tropical oriental et mer des Sargasses." Paris 6, 1991. http://www.theses.fr/1991PA066491.

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L'importance du picoplancton autotrophe dans la biomasse et la production primaire a été étudiée dans deux régions océaniques oligotrophes : l'Atlantique tropical oriental (PIRAL), plus particulièrement la Convergence Nord Équatoriale et le Dôme de Guinée (centre et périphérie), et la mer des Sargasses (CHLOMAX). Toutes ces zones présentent des structures hydrologiques à deux couches, avec une couche homogène supérieure dépourvue de nitrates. Cette stratification entraîne des distributions verticales particulières des paramètres biologiques étudiés : organismes picoplanctoniques (cyanobactérie
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Glé, Corine. "Structure et dynamique des communautés microbiennes autotrophes et production primaire planctonique dans une lagune côtière macrotidale, le Bassin d'Arcachon : facteurs de contrôle de type bottom-up." Bordeaux 1, 2007. http://www.theses.fr/2007BOR13556.

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Le Bassin d'Arcachon, lagune côtière macrotidale, supporte une production importante d'organismes à fort intérêt économique. La connaissance de la dynamique du compartiment autotrophe est indispensable pour comprendre le fonctionnement trophique de cet écosystème. Cette étude se propose de répondre aux questions suivantes : (i) quels sont les facteurs environnementaux susceptibles de conditionner la dynamique saisonnière et spatiale du compartiment autotrophe dans la lagune ?, (ii) quel est le rôle des facterus de type bottom-up dans le contrôle de la production primaire planctonique ? et (iii
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Sun, Cheng-Hsiung, and 孫證雄. "Production and supercritical fluid extraction of lutein from Scenedesmus obliquus in an autotrophical cultivation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/41212115888761825766.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>99<br>In recent years, because the algae have a carbon reduction capacity, high lipid content and rich nutrient ingredients, it gradually attracted much attention. In this study, we explore three research directions by the cultivation of microalgae: (1) the effect of Scenedesmus obliquus concentration and lutein content by changing the environment or the medium composition. The results of this study indicate that an increase in CO2 percentage to 2% and light intensity to 1600 μmolm-2s-1 can enhance Scenedesmus obliquus growth to a maximum of 2.45 g/L and 2.46 g/L;
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Chiang, Wei-Cheng, and 江偉誠. "The Autotrophical Cultivation Of Scenedesmus Obliquus In Continuous And The Optimization Of Lutein Production By Supercritical Fluid Extraction." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/28509080438702920587.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>100<br>Due to the depletion of energy and greenhouse effect recently, the applications of microalgae are getting important. Microalgae are organism with high growing rate, rich in fat contents and nutritional components. Also, it has great impact on water purifying. In this research, we investigate the following aspect by cultivating the microalgae: (1) Investigate the impact on the concentration of Scenedesmus obliquus and lutein content by changing the environment or the medium compositions. The result showed us that adding pressure would delay the growing of S.
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van, Straaten Oliver. "Drought effects on soil carbon dioxide efflux in two ecosystems in Central Sulawesi, Indonesia." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-B136-8.

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Capítulos de libros sobre el tema "Autotrophic production"

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Rizzetto, F., and F. L. Hooimeijer. "Reloading Landscapes: Democratic and Autotrophic Landscape of Taranto." In Regenerative Territories, 267–80. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-78536-9_17.

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AbstractCities are like “heterotrophic organisms” because they are dependent on inflows of air, water, food, matter, and energy. Unlike nature, they pollute their own habitat through the production of waste outflows and emissions, extending beyond their own footprint. Data on the ecological footprint of cities have quantified, emblematically, the imbalance between in- and outflows but also what remains: polluted air, water, and soil. The rapid growth of urbanization is a matter of serious concern, but as a part of new development, it can be turned around with an approach in which cities become an “autotrophic organism”.In 2012 Taranto, a coastal city in Southern Italy with an important commercial and military port, was declared as the city “with the highest risk of environmental crisis” in Italy due to a large industrial area developed in the proximity of a highly populated urban settlement.The cause of pollution, a steel production plant, directly employs approximately 12.000 people and another 8.000 contractors indirectly, making it Taranto’s main economic driver.The conflict between economy and environment in the city of Taranto, make it a peculiar case study to be approached with the concept of a Democratic Landscape. This concept reads the territory beyond the natural environment, also recognizing the wellbeing of the inhabitants.After the analysis of a Democratic Landscape in relation to the concept of an “autotrophic organism”, this contribution explores the transformation by regeneration of the ecosystem and the economic regime. In redeveloping a city like Taranto, changing its function from a heterotrophic organism to an autotroph organism, the approach of the so-called “linking open-loop system circularity” is more appropriate. It more adequately describes the system than what is commonly understood for circularity at the building scale of “reduce, reuse, recycle of resources”. Circularity as an attitude brings together many elements that can be considered generic for each project: it can be about recycling or reuse, cutting costs or time, and output of CO2 through reducing material inflow and the transport of materials.In the context of the Democratic Landscape and an autotropic organism, the approach of “linking open-loop system circularity” is tested on two scales in Taranto. One, on the large scale, proposing multiple reuses of agricultural crops after remediation and two, at the local scale, in rebuilding a portion of the city by reusing the demolished buildings materials.The need to rethink and redesign the flow of resources such as building materials, water, food, and energy is essential to the future sustainability of cities. It involves thinking about how to use existing resources rather than dispose of them as in the linear model. It also means establishing new economic models in order to make a sustainable city, flows of intelligent growth and the creation of an identity for a communal sense of belonging. Together, these create a democratic, autotrophic landscape that can sustain a future.
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Gu, Ji-Dong, and Yoko Katayama. "Microbiota and Biochemical Processes Involved in Biodeterioration of Cultural Heritage and Protection." In Microorganisms in the Deterioration and Preservation of Cultural Heritage, 37–58. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69411-1_2.

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AbstractThe world cultural heritage sites face new challenges for an effective protection and management because of destruction and damage initiated by both natural and anthropogenic causes. Fresh rock and sandstone surfaces of buildings are quickly colonized and covered by a layer of microorganisms, including phototrophs, lithotrophs, and heterotrophs to form a biofilm that alters the local conditions of the stone surfaces, especially under the favorable tropical climate conditions for autotrophic microorganisms and plants. Biofilms had been studied with indigenous or pure cultures of isolated microorganisms, but the selective ones that contribute to deterioration of the cultural heritage cannot be confirmed easily. Currently, high-throughput sequencing and metegenomics analyses are capable of obtaining microbial community and composition in great depth, but they also suffer from similar weakness unable to identify the culprits in the community. With these as background, this article presents a different approach by focusing on the biochemical processes and the responsible microorganisms involved to reveal the destruction processes for management and protection. Among these different functional groups of microorganisms, lichens are known as pioneering rock-decomposing microorganisms, and both sulfur-oxidizing bacteria and fungi participate in the decomposition of sandstone via sulfur cycling and initiation of salt attack of the stone afterward, resulting in defoliation and cracking of stone. Other microorganisms including ammonia-oxidizing bacteria and archaea, especially the latter, have been recently detected on sandstone monuments providing evidence on the new organisms involved in the deterioration of cultural heritage and buildings. In addition, fungi can colonize the surfaces of the matured biofilms and play a new role in the removal of them, which has a potential biotechnological application in conservation of cultural heritage. The new proposed approach by focusing the microorganisms with identified biochemical function is more productive than a description of the community composition and assembly when assessing cultural heritage biodeterioration, and this provides basic and useful information for effective protection strategies and management.
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Niizawa, Ignacio, Brenda Y. Espinaco, Susana E. Zorrilla, and Guillermo A. Sihufe. "Astaxanthin production by autotrophic cultivation of Haematococcus pluvialis: A success story." In Global Perspectives on Astaxanthin, 71–89. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-823304-7.00005-2.

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"Nutrients in Salmonid Ecosystems: Sustaining Production and Biodiversity." In Nutrients in Salmonid Ecosystems: Sustaining Production and Biodiversity, edited by Megan S. Sterling and Kenneth I. Ashley. American Fisheries Society, 2003. http://dx.doi.org/10.47886/9781888569445.ch17.

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&lt;em&gt;Abstract.&lt;/em&gt;—A solid briquette fertilizer for use in the Pacific Northwest streams and elsewhere was identified from a variety of slow-release formulations (26 were tested with varying N:P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;:K&lt;sub&gt;2&lt;/sub&gt;O ratios and binders) using indoor trough and controlled field experiments. The use of a slow-release fertilizer is an innovative method for adding inorganic nutrients to nutrientpoor (oligotrophic) streams to increase autotrophic production and aid in the restoration of salmonid populations. A series of indoor trough experiments demonstrated that the majority of samples containing binders of molasses, hydrated lime, vegetable oil, bentonite, starch, acrawax, candle wax, and Daratak® XB-3631 (unpolymerized Saran™) dissolved too slowly. The fastest dissolution rates occurred with fertilizer briquettes having no binder or vegetable oil. Further trough and field studies using fertilizer with no binder and vegetable oil as binder examined the effects of varying N:P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;:K&lt;sub&gt;2&lt;/sub&gt;O ratios. Dissolution rates were varied by using different percentages of magnesium ammonium phosphate (MagAmP; its formula 7:40:0 N:P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;:K&lt;sub&gt;2&lt;/sub&gt;O) and urea (46:0:0). Optimal continual nutrient release for a period of four months was achieved with a fertilizer formulation of 17:30:0 (percent by weight N:P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;:K&lt;sub&gt;2&lt;/sub&gt;O), with a ratio of 75% MagAmP to 25% urea, and containing no binder. The dissolution rate for this product ranged from 4.6% to 6.6% per week (for field and trough experiments, respectively) in water of 0.15 m/s average velocity. These studies indicate that a slow-release fertilizer product can be manufactured to last approximately four months when applied in the spring to stimulate autotrophic production in nutrient deficient streams, thereby increasing forage and salmonid production.
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Ji, Xuan, Luke Webster, Taylor J. Wass, and Peer M. Schenk. "Cultivation Techniques to Induce High-Value Nutraceuticals in Microalgae." In Algal Functional Foods and Nutraceuticals: Benefits, Opportunities, and Challenges, 29–44. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051872122010006.

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Microalgae are unicellular autotrophic and heterotrophic microorganisms that can exceed the areal productivity of land plants by order of magnitude. Microalgae are producers of food, medicines, high-value bioactive substances and biofuels. They are highly adaptable, allowing them to thrive in freshwater and saltwater, and can be cultivated on non-arable land. Different cultivation methods have varying effects on the yield of bioactive substances produced by microalgae. As such, selecting the appropriate cultivation conditions is imperative for efficient compound production. This chapter summarizes the current state of microalgae cultivation, techniques for overproduction of high-value nutraceuticals, and future prospects, with the aim of providing the reader with fresh ideas for the cultivation of microalgae for human health.
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Culver, David C., and Tanja Pipan. "Sources of Energy in Subterranean Environments." In The Biology of Caves and Other Subterranean Habitats, 24–42. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198820765.003.0002.

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Although subterranean habitats in general and caves in particular are often held to be extremely energy-poor (oligotrophic) environments, not all are. Compared to surface habitats, subterranean habitats are nutrient-poor, especially because there is no photo-autotrophic production and chemoautotrophy appears to be uncommon. On the other hand, these differences are not always pronounced. For example, the quantities of carbon fluxes in cave streams are in the range of those reported from surface streams. In some subterranean systems, chemoautotrophy is the main source of energy, but more typically subterranean communities depend on allochthonous sources of organic carbon. The major source of carbon in interstitial habitats is Dissolved Organic Matter (DOM) from surface waters. The major sources of carbon for cave communities are (1) water percolating from the surface, (2) sinking streams that enter caves, and (3) activities of animals moving in and out of caves.
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Sapunov, Valentin. "Real Need of the World in Food." In Advances in Environmental Engineering and Green Technologies, 1–12. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1042-1.ch001.

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Mankind has minimal areas of agricultural land that produces more food than required to feed the world's population. When allocating forces and assets within the framework of the global policy of investing in agriculture, it can be safely reduced. What is food policy in the 21st century? First of all, it is advisable to increase investments in the study of food opportunities, the development of technology for the collection and processing of aborigine animals and plants in particular territories with a further increase in investments in the methods of biological technology. It is advisable to increase the investments in industrial methods for obtaining food products from animals, plants, microorganisms, in the future – in the course of chemical industrial synthesis. Vernadsky predicted that in the future, mankind will switch to autotrophic nutrition, i.e. artificial synthesis of food from inorganic materials. Biotechnology will gradually reduce the volume of traditional agricultural production.
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Irina Cordea, Mirela, and Orsolya Borsai. "Salt and Water Stress Responses in Plants." In Plant Stress Physiology - Perspectives in Agriculture [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.101072.

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Climate change-driven ecological disturbances have a great impact on freshwater availability which hampers agricultural production. Currently, drought and salinity are the two major abiotic stress factors responsible for the reduction of crop yields worldwide. Increasing soil salt concentration decreases plant water uptake leading to an apparent water limitation and later to the accumulation of toxic ions in various plant organs which negatively affect plant growth. Plants are autotrophic organisms that function with simple inorganic molecules, but the underlying pathways of defense mechanisms are much more complex and harder to unravel. However, the most promising strategy to achieve sustainable agriculture and to meet the future global food demand, is the enhancement of crop stress tolerance through traditional breeding techniques and genetic engineering. Therefore, it is very important to better understand the tolerance mechanisms of the plants, including signaling pathways, biochemical and physiological responses. Although, these mechanisms are based on a well-defined set of basic responses, they can vary among different plant species.
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Bhattacharya, Ishita. "Microalgae: An Exquisite Oil Producer." In Progress in Microalgae Research - A Path for Shaping Sustainable Futures. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104895.

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With the influx in population and shortage of conventional energy-sources, an exponential-rise of the microalgal oil-production has been observed in the past two decades. The algal bio-oil is used in various industries viz. food, pharmaceutical, cosmetic and biodiesel plants. The present study is focused towards the production of oil from oleaginous microalgae in photo-bioreactors and open water systems. Moreover, microalgae can thrive in non-cultivable waters like seawater, salt water and even wastewater which make the algal technology more attractive in terms of soil and water preservation. Using sunlight and nutrients like salts of magnesium, potassium, sodium etc. the autotrophic microalgae can grow in large quantities in indoor photo-bioreactors and in open ponds. Microalgae are able to produce approximately 10,000 gallons of oil per acre as compared to the higher plants that produces only 50 gallons per acre (soy), 110 to 145 gallons per acre (rapeseed), 175 gallons per acre (Jatropha), 650 gallons per acre (palm). The biomass productivity is 10 times higher than that of the phytoplanktons and 20–30% higher than that of the terrestrial biomass. In terms of the fatty acid composition, the microalgal oil can well match with the plant-derived oil, mainly C16 and C18 fatty acids. Some microalgae are also rich in valuable polyunsaturated-fatty-acids, which have multiple health benefits.
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N. Munubi, Renalda, and Hieromin A. Lamtane. "Animal Waste and Agro-by-Products: Valuable Resources for Producing Fish at Low Costs in Sub-Saharan Countries." In Innovation in the Food Sector Through the Valorization of Food and Agro-Food By-Products. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95057.

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Animal and crop production throughout the world generate high amounts of wastes or by-products annually that may possess added value compounds with high functionality. These wastes and by-products may cause negative environmental impacts and significant expenses if not well managed and or controlled. Much of these wastes and by-products is valuable and cheaper source of potentially functional compounds such as proteins, lipids, starch, micronutrients, bioactive compounds, and dietary fibbers. In aquaculture, feed is expensive, and the existing body of literature has shown that animal manure and its extracts can be successfully incorporated into fishpond to increase fish production at a low cost. In addition, crop residues such as rice bran, maize bran, and seed cakes are commonly used as pond inputs in small-scale aquaculture. Animal waste and crop residues are added in a fishpond that filter-feeding fish can use directly as feed, and these may form a major proportion of the detritus in the pond. These resources also stimulate the growth of phytoplankton that are rich in protein and are the basis of the food web that can support the growth of a range of herbivorous and omnivorous fish. Therefore, technically, wastes are used as direct feed, a source of minerals for autotrophic production and a source of organic matter for heterotrophic production. In this context, animal manure and crop residues have been used to provide great opportunities to improve food security. The purpose of this review is to project the potential of animal waste and agro-by-products as a sustainable alternative as aquaculture inputs to reduce poverty, malnutrition, and hunger in developing countries.
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Actas de conferencias sobre el tema "Autotrophic production"

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Brune, David E. "Resource Utilization in Heterotrophic Vs Autotrophic Marine Shrimp Production." In 2022 Houston, Texas July 17-20, 2022. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2022. http://dx.doi.org/10.13031/aim.202200812.

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Chikaraishi, Y. "Hydrogen Isotopic Composition of Fatty Acids, Sterols, and Phytol: Autotrophic Vs. Heterotrophic Production." In 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902871.

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Beauchamp, S., J. Kerekes, and R. Tordon. "Optical Properties and Autotrophic Production in Inland Waters in Atlantic Canada With Reference to Research Diving." In OCEANS '87. IEEE, 1987. http://dx.doi.org/10.1109/oceans.1987.1160746.

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Morais, K. C. C., J. V. C. Vargas, A. B. Mariano, J. C. Ordonez, and V. Kava. "Sustainable energy via biodiesel production from autotrophic and mixotrophic growth of the microalga Phaeodactylum tricornutum in compact photobioreactors." In 2016 IEEE Conference on Technologies for Sustainability (SusTech). IEEE, 2016. http://dx.doi.org/10.1109/sustech.2016.7897177.

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Ahmadi, Vafa, and Carlos Dinamarca. "Simulation of the Effect of Local Electric Potential and Substrate Concentration on CO2 Reduction via Microbial Electrosynthesis." In 63rd International Conference of Scandinavian Simulation Society, SIMS 2022, Trondheim, Norway, September 20-21, 2022. Linköping University Electronic Press, 2022. http://dx.doi.org/10.3384/ecp192006.

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Integrating anaerobic digestion into electrochemical reactors is an advanced technology for biomethane recovery. Imposing low electric potential between electrodes, supplies CO2, electrons, and hydronium ions from anodic oxidation of organic and/or inorganic compounds. Then, autotrophic methanogens on the cathode produce methane from CO2 and H+ by electron uptake from the cathode. However, in mixed microbial environments, acetogens produce acetate as well. These reactions can take place via two different mechanisms, DIET (direct interspecies electron transfer) or IMET (indirect mediated electr
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