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Roberto De Philippis
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Article
Novel strategies towards efficient molecular biohydrogen production by dark fermentative mechanism: present progress and future perspective
In the scenario of alarming increase in greenhouse and toxic gas emissions from the burning of conventional fuels, it is high time that the population drifts towards alternative fuel usage to obviate pollution...
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Article
Open AccessRhizosheath–root system changes exopolysaccharide content but stabilizes bacterial community across contrasting seasons in a desert environment
In hot deserts daily/seasonal fluctuations pose great challenges to the resident organisms. However, these extreme ecosystems host unique microenvironments, such as the rhizosheath–root system of desert spearg...
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Article
Open AccessHigh Arctic biocrusts: characterization of the exopolysaccharidic matrix
Biocrusts can be found in a wide array of habitats, where they provide important ecosystem services. These microbial associations are particularly important in High Arctic environments, where biocrust colonize...
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Article
Open AccessSoil Type and Cyanobacteria Species Influence the Macromolecular and Chemical Characteristics of the Polysaccharidic Matrix in Induced Biocrusts
Inoculation of soils with cyanobacteria is proposed as a sustainable biotechnological technique for restoration of degraded areas in drylands due to the important role that cyanobacteria and their exopolysacch...
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Article
Identification of aqueous extracts from Artemisia ordosica and their allelopathic effects on desert soil algae
Desert vascular plants coexist extensively with biological soil crusts (BSCs) in arid lands, but limited information is known about the impacts of shrub litterfall on soil microalgae. In this study, the compon...
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Article
Mixotrophic cultivation of Chlorococcum sp. under non-controlled conditions using a digestate from pig manure within a biorefinery
A number of business opportunities may arise from microalgae and wastewater treatment becoming an integrated system, as biofuels and high-added value products could be obtained simultaneously. This study, perf...
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Article
A novel method to evaluate nutrient retention by biological soil crust exopolymeric matrix
Biological soil crusts (biocrusts) are microbial communities commonly found in the upper layer of arid soils. These microorganisms release exopolysaccharides (EPS), which form the exopolymeric matrix (EPM), al...
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Article
Complex role of the polymeric matrix in biological soil crusts
Extracellular polymeric matrix (EPM) is a complex component of the organo-mineral assemblages created by biological soil crusts (BSCs). Mainly of polysaccharidic origin, it embeds soil and sediments and provid...
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Article
Development of the polysaccharidic matrix in biocrusts induced by a cyanobacterium inoculated in sand microcosms
Soil inoculation with cyanobacteria (cyanobacterization) is a biotechnological method widely studied to improve soil quality and productivity. During their growth on soil, cyanobacteria excrete exopolysacchari...
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Chapter
Photosynthetic Purple Non Sulfur Bacteria in Hydrogen Producing Systems: New Approaches in the Use of Well Known and Innovative Substrates
During the last few years, progress has been made in develo** cleaner and more efficient bioenergy producing systems. Innovative processes and novel substrates were assessed at lab scale, in order to investi...
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Article
Released polysaccharides (RPS) from Cyanothece sp. CCY 0110 as biosorbent for heavy metals bioremediation: interactions between metals and RPS binding sites
Bioremediation of heavy metals using microorganisms can be advantageous compared to conventional physicochemical methods due to the use of renewable resources and efficiencies of removal particularly cations a...
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Article
Use of quantitative PCR with the chloroplast gene rps4 to determine moss abundance in the early succession stage of biological soil crusts
The quantitative PCR (qPCR) method was firstly used to measure moss abundance with moss chloroplast gene rps4 as compared to that with cyanobacterial 16S rRNA gene and fungal 25-28S rRNA gene in the early success...
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Article
Open AccessDraft genome sequence and overview of the purple non sulfur bacterium Rhodopseudomonas palustris 42OL
Rhodopseudomonas palustris strain 42OL was isolated in 1973 from a sugar refinery waste treatment pond. The strain has been prevalently used for hydrogen production processes using a wide...
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Article
Hydrogen production under salt stress conditions by a freshwater Rhodopseudomonas palustris strain
Hydrogen represents a possible alternative energy carrier to face the growing request for energy and the shortage of fossil fuels. Photofermentation for the production of H2 constitutes a promising way for integr...
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Chapter
Exocellular Polysaccharides in Microalgae and Cyanobacteria: Chemical Features, Role and Enzymes and Genes Involved in Their Biosynthesis
Extracellular polysaccharides (EPSs) produced by microalgae and cyanobacteria are molecules with a great ecological significance for the producing organisms, serving in a wide array of biological processes and...
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Article
Differentiation of the characteristics of excreted extracellular polysaccharides reveals the heterogeneous primary succession of induced biological soil crusts
In this study, the chemical composition and the macromolecular features of the extracellular polysaccharidic (EPS) matrix of induced biological soil crusts (IBSCs) of different age, collected in the hyper-arid...
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Article
Open AccessEl potencial de las bacterias purpuras no sulfurosas (BPNS) en la producción biológica de hidrógeno
La actual problemática ambiental y energética causada por el uso de combustibles fósiles ha hecho necesario valorar energías alternas como el hidrógeno. Los bioprocesos son una opción para la producción de est...
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Book
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Chapter
Hydrogen Production and Possible Impact on Global Energy Demand: Open Problems and Perspectives
The main goal of this Chapter is to take the reader to the unconventional concept that if hydrogen is used as an energy carrier, there are consistent benefits to be expected, depending on how hydrogen is gener...
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Chapter
Photosynthesis and Hydrogen Production in Purple Non Sulfur Bacteria: Fundamental and Applied Aspects
Light-dependent hydrogen production by purple non sulfur bacteria (PNSB) has been studied for several decades. However the exact route that energy takes from the moment a photon is absorbed to the formation of...
