Results 181 to 190 of about 46,033 (194)
Some of the next articles are maybe not open access.
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
openaire +3 more sources
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.
openaire +3 more sources
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 ...
openaire +3 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +2 more sources
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
2006
Based on modern geochemistry's view of the atmospheric and geological conditions on the primordial Earth ∼3.8–4 billion years ago, the most realistic scenario for the formation of amino acids and peptides in chemical evolution is discussed, including possible reasons for sequence preferences in early proteins and for biohomochirality.
Bernd M. Rode, Kristof Plankensteiner
openaire +3 more sources
Based on modern geochemistry's view of the atmospheric and geological conditions on the primordial Earth ∼3.8–4 billion years ago, the most realistic scenario for the formation of amino acids and peptides in chemical evolution is discussed, including possible reasons for sequence preferences in early proteins and for biohomochirality.
Bernd M. Rode, Kristof Plankensteiner
openaire +3 more sources