Results 31 to 40 of about 1,686 (162)

Human gut Bacteroides capture vitamin B12 via cell surface-exposed lipoproteins. [PDF]

, 2018
Human gut Bacteroides use surface-exposed lipoproteins to bind and metabolize complex polysaccharides. Although vitamins and other nutrients are also essential for commensal fitness, much less is known about how commensal bacteria compete with each other
Barry, Natasha A, Degnan, Patrick H, Folta-Stogniew, Ewa, Goodman, Andrew L, Schofield, Whitman B, Wexler, Aaron G   +5 more
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The Porphinoids - Versatile Biological Catalyst Molecules [PDF]

, 1987
The natural porphinoids, such as the iron complex heme, the magnesium complex chlorophyll a, the nickel complex coenzyme F430, and the (corrinoid) cobalt complex coenzyme B12 play central roles in all spheres of life, e.g.
Kräutler, Bernhard
core   +2 more sources

Vitamin B12: prevention of human beings from lethal diseases and its food application

Journal of the Science of Food and Agriculture, Volume 105, Issue 1, Page 10-18, 15 January 2025.
Abstract Vitamin B12, a water‐soluble essential micronutrient, plays a pivotal role in numerous physiological processes in the human body. This review meticulously examines the structural complexity and the diverse mechanisms through which vitamin B12 exerts its preventive effects against a spectrum of health conditions, including pernicious anaemia ...
S Harikrishnan, Deepika Kaushik, Mukul Kumar, Jasjit Kaur, Emel Oz, Charalampos Proestos, Tahra Elobeid, Omur Fatih Karakullukcu, Fatih Oz   +8 more
wiley   +1 more source

Unveiling the potentials and action mechanisms of Citri reticulatae Pericarpium as an anti‐inflammatory food

Food Frontiers, Volume 6, Issue 1, Page 163-184, January 2025.
The review summarized advances in utilizing CRP for the prevention and treatment of inflammation under various pathological conditions. The underlying mechanism has focused on polymethoxyflavones (PMFs) present in CRP and its interaction with gut microbiota. Abstract Modern lifestyle has led human body under a frequent exposure of chronic inflammation.
Yanyi Li, Ying Chen, Yue Zhou, Jiayi He, Qian Zhou, Mingfu Wang   +5 more
wiley   +1 more source

Isolation and characterization of a novel methanogen Methanosarcina hadiensis sp. nov. from subsurface Boom Clay pore water

Environmental Microbiology, Volume 26, Issue 12, December 2024.
We isolated a novel methanogenic archaeon, Methanosarcina hadiensis sp. nov. (TD41E1‐1), from Boom Clay pore water at a depth of 225 m. It exhibits unique characteristics compared to previously characterized Methanosarcina species, such as the inability to perform acetoclastic methanogenesis and the presence of extensive surface appendages.
Francisco Javier Giménez, Eveline Peeters, Miroslav Honty, Natalie Leys, Kristel Mijnendonckx   +4 more
wiley   +1 more source

Microbial demethylation of dimethylsulfoniopropionate and methylthiopropionate [PDF]

, 2000
As discussed in chapter 1 , there is an increased interest in the production of certain natural sulfur-containing flavor compounds or flavor precursors.
Jansen, Michael,
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Fermentative production of vitamin B12 by Propionibacterium shermanii and Pseudomonas denitrificans and its promising health benefits: A review

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, Vinay Kumar Pandey, Parmjit S. Panesar, Anam Taufeeq, Hridyanshi Mishra, Sarvesh Rustagi, Sumira Malik, Béla Kovács, Tejas Suthar, Ayaz Mukarram Shaikh   +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, Maria A. Soto, Elden Rowland, Nan Chen, Anna Gleason, Emmanuel Devred, Julie LaRoche, Erin M. Bertrand   +7 more
wiley   +1 more source

Report of the Scientific Committee of the Food Safety Authority of Ireland on the suitability of analytical methods for assessing food authenticity

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, Chloe Glennon, Cormac McElhinney, Martin Danaher, Conor Graham, Montserrat Gutierrez, Alan Kelly, Kieran Kilcawley, David Lee, Ed Malone, Anne Molloy, Tom O'Callaghan, Ita Kinahan   +12 more
wiley   +1 more source

Investigating the origins of B12 biosynthesis in the most ancient roots of the tree of life [PDF]

, 2015
Vitamin B12, also known as B12 or cobalamin, is a vital nutrient required across all branches of life, but the ability to synthesize this complex molecule de novo is limited to only a few archaea and bacteria.
Alicea, Edil, Bibis, Stergios S., Celone, Veronica, Jutla, Tripta, Petrus, Amanda K., Swithers, Kristen S.   +5 more
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