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Analysis of Probiotics and Prebiotics
2013Probiotics are live microorganisms that confer health benefits on the host when they are administered in adequate numbers (Coman et al. 2012, da Cruz et al. 2007, FAO/WHO 2002, Saad et al. 2012). Probiotics are supplements or foods that contain viable microorganisms that cause alterations of the microflora of the host.
Otles S., Ozyurt V.H.
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Prebiotic Synthesis on Minerals: Bridging the Prebiotic and RNA Worlds
The Biological Bulletin, 1999An array of experimental findings suggest that the simple molecules required for the origin of life may have been available on the primitive Earth. The well-known MillerUrey electric discharge experiment yields HCN, amino acids, and carboxylic acids (1). Carbonaceous meteorites contain over 70 amino acids, some heterocyclic compounds, including purines,
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Prebiotic Activation Processes
Nature, 1973Questions regarding the combination of amino acids and ribonucleotides to polypeptides and polynucleotides are investigated. Each of the reactions considered occurs in the solid state in plausible prebiotic conditions. Together they provide the basis for a unified scheme of amino acid and nucleotide activation. Urea, imidazole and Mg(++) are essential
R. Lohrmann, Leslie E. Orgel
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Tolerance of Probiotics and Prebiotics
Journal of Clinical Gastroenterology, 2004The clinical efficacy of probiotics and prebiotics has been proved in several clinical settings. The authors review their proved or potential side effects. Probiotics as living microorganisms may theoretically be responsible for 4 types of side effects in susceptible individuals: infections, deleterious metabolic activities, excessive immune ...
Philippe Seksik, Philippe Marteau
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Astrobiology, 2001
Equilibrium adsorption isotherm data for the purine base adenine has been obtained on several prebiotically relevant minerals by frontal analysis using water as a mobile phase. Adenine is far displaced toward adsorption on pyrite (FeS2), quartz (SiO2), and pyrrhotite (FeS), but somewhat less for magnetite (Fe3O4) and forsterite (Mg2SiO4). The prebiotic
Corey A. Cohn +4 more
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Equilibrium adsorption isotherm data for the purine base adenine has been obtained on several prebiotically relevant minerals by frontal analysis using water as a mobile phase. Adenine is far displaced toward adsorption on pyrite (FeS2), quartz (SiO2), and pyrrhotite (FeS), but somewhat less for magnetite (Fe3O4) and forsterite (Mg2SiO4). The prebiotic
Corey A. Cohn +4 more
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The prebiotic chemistry of nucleotides
Origins of Life, 1984Diiminosuccinonitrile (DISN), formed by the oxidation of diaminomaleonitrile (DAMN), has been investigated as a potential prebiotic phosphorylating agent. DISN effects the cyclization of 3'-adenosine monophosphate to adenosine 2', 3'-cyclic phosphate in up to 39% yield. The mechanism of this reaction was investigated.
William J. Hagan +2 more
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Thermodynamics of Prebiotic Phosphorylation
Chemical Reviews, 2019The formation of organophosphate molecules by prebiotic processes relies on nonenzymatic synthesis. Given the centrality of phosphorylated biomolecules in metabolic, structural, and replicative processes, it is highly likely that such nonenzymatic synthesis had to occur early in Earth's history.
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An overview of probiotics and prebiotics
Nursing Standard, 2007This article reviews the origins and background of probiotics. Evidence for the potential mechanisms of probiotics and prebiotics, and their interactions with the gastrointestinal tract and the immune system are discussed. Evidence is examined for the use of probiotics to treat infantile diarrhoea, irritable bowel syndrome, inflammatory bowel disease ...
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Panminerva medica, 2015
Obesity was probably rare in ancient times, with the current increase starting in the Industrial Revolution of the eighteenth century, and becoming much more widespread from about 1950, so concurrent with the increased consumption of carbohydrates from cereals in the Green Revolution.
Carnahan, Sharyn +3 more
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Obesity was probably rare in ancient times, with the current increase starting in the Industrial Revolution of the eighteenth century, and becoming much more widespread from about 1950, so concurrent with the increased consumption of carbohydrates from cereals in the Green Revolution.
Carnahan, Sharyn +3 more
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2014
Dietary fiber and prebiotics exert a great impact on health-promoting food for mankind. Under this aspect a general overview is given about the bioavailability of carbohydrates and their influence on dietary fiber intake and about the developing of the prebiotic concept and specific functional foods. Moreover, the occurrence and chemical composition of
Renate Loeppert +4 more
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Dietary fiber and prebiotics exert a great impact on health-promoting food for mankind. Under this aspect a general overview is given about the bioavailability of carbohydrates and their influence on dietary fiber intake and about the developing of the prebiotic concept and specific functional foods. Moreover, the occurrence and chemical composition of
Renate Loeppert +4 more
openaire +2 more sources