Results 41 to 50 of about 2,048 (135)
Food Science &Nutrition, Volume 12, Issue 11, Page 8675-8691, November 2024.Vitamin B12 is essential to human physiological processes, it might be challenging for vegans and vegetarians to get enough of it in their diets. Propionibacterium shermanii and Pseudomonas denitrificans have been demonstrated as promising fermented sources of vitamin B12. Vitamin B12 is naturally produced by P. denitrificans, but P.
Anjali Tripathi +9 more
wiley +1 more source
Production and utilization of pseudocobalamin in marine Synechococcus cultures and communities
Environmental Microbiology, Volume 26, Issue 10, October 2024.Pseudocobalamin levels in cultured Synechococcus cells are influenced by culture methods and growth conditions but remain consistently around 300 molecules per cell in environmental samples. The amount of pseudocobalamin in cells appears to be loosely coupled to the demand for pseudocobalamin by the enzyme methionine synthase (MetH).
Catherine C. Bannon +7 more
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Food Risk Assess Europe, Volume 2, Issue 4, October 2024.Executive summary The Food Safety Authority of Ireland (FSAI) requested its Scientific Committee to advise on the criteria and analytical controls that should be considered when examining the potential use of new laboratory techniques in assessing food authenticity. A subcommittee of experts in various analytical fields was established to prepare draft
Pat O'Mahony +12 more
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Chemistry – A European Journal, Volume 30, Issue 49, September 2, 2024.To find the structural requirements of a B12‐derivative to bind and switch the btuB riboswitch we derivatised the corrin sidechains b and e as well as the apical ligand. While modifications at the sidechains have a large impact on the riboswitch, introduction of an apical adenosyl‐ligand restores the riboswitch fold.
Anastasia Musiari +3 more
wiley +1 more source
Emission‐based sensing of cobalt (II) and vitamin B12 via a bis‐indole derivative
Luminescence, Volume 39, Issue 8, August 2024.In this study, a newly synthesized bis‐indole derivative has been successfully used in the analysis of both ionic cobalt and vitamin B12. The fluorescent bis‐indole ligand surrounds cobalt ions and acts similarly to the corrin ring in the structure of vitamin B12 in nature.
Taskin Mumcu +3 more
wiley +1 more source
Burning question: Rethinking organohalide degradation strategy for bioremediation applications
Microbial Biotechnology, Volume 17, Issue 8, August 2024.This review specifically focuses on the novel solution of organohalide bioremediation, proposing redox‐potential‐mediated hybrid bioprocesses tailored to the complexities of organohalide pollution. Abstract Organohalides are widespread pollutants that pose significant environmental hazards due to their high degree of halogenation and elevated redox ...
Qihong Lu, Qi Liang, Shanquan Wang
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Freshwater Biology, Volume 69, Issue 8, Page 1069-1083, August 2024.Abstract Evidence suggests that low cobalt (Co) may limit heterocyst frequency (HF) in filamentous diazotrophic cyanobacteria. Therefore, the effect of three Co concentrations on HF in four species in the genera Aphanizomenon and Dolichospermum was examined in N‐depleted (N was not added) culture.
Purnank Shah +6 more
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National Journal of Medical Research, 2011 Background: Vitamin B12 is a biologically active corrinoid, a group of cobalt containing compounds with macrocyclic pyrrol rings. Vitamin B12 deficiency is characterized by megaloblastic anemia, fatigue, weakness, constipation, loss of appetite, and ...
Saritaben Mangukiya +4 more
doaj
Angewandte Chemie, Volume 136, Issue 31, July 29, 2024.Der bifunktionale CO‐Dehydrogenase (CODH)/Acetyl‐CoA‐Synthase (ACS)‐Komplex verbindet die Katalyse an zwei Stellen, die durch einen Tunnel verbunden sind, der das erzeugte CO transportiert. Hydrophobe, CO‐affine Stellen innerhalb des Tunnels wirken eher wie eine Eimerkette als wie eine einfache Röhre.
Jakob Ruickoldt +6 more
wiley +1 more source
MICROBIAL DEGRADATION OF CORRINOIDS I.
, 1964 W. M. Scott +3 more
openalex +1 more source