Results 201 to 210 of about 497,843 (264)

Assessment of vitamin A, vitamin B₂, vitamin B₁₂, vitamin K, folate, and choline status following 4 months of multinutrient supplementation in healthy vegans: a randomised, double-blind, placebo-controlled trial. [PDF]

Eur J Nutr
Zerback T, Koeder C, Weder S, Sputtek A, Eckert GP, Keller M.   +5 more
europepmc   +1 more source

Mathematical kinetic modelling followed by in vitro and in vivo assays reveal the bifunctional rice GTPCHII/DHBPS enzymes and demonstrate the key roles of OsRibA proteins in the vitamin B2 pathway. [PDF]

BMC Plant Biol
Faustino M, Lourenço T, Strobbe S, Cao D, Fonseca A, Rocha I, Van Der Straeten D, Oliveira MM.   +7 more
europepmc   +1 more source

Nanoencapsulation of vitamin B₂ using chitosan-modified poly(lactic-co-glycolic acid) nanoparticles: Synthesis, characterization, and in vitro studies on simulated gastrointestinal stability and delivery. [PDF]

J Food Sci
Sathiensathaporn S, Solé-Porta A, Baowan D, Pissuwan D, Wongtrakoongate P, Roig A, Katewongsa KP.   +6 more
europepmc   +1 more source

Safety of a feed additive consisting of vitamin B₂/riboflavin produced with <i>Eremothecium ashbyi</i> CCTCCM 2019833 for all animal species (Hubei Guangji Pharmaceutical Co., Ltd). [PDF]

EFSA J
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Röhe I, Theodoridou K, Aquilina G, Svensson K, Želježić D, Galobart J, Holczknecht O, Vettori MV, Pizzo F.   +23 more
europepmc   +1 more source

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Anaphylaxis to riboflavin (vitamin B2)

Annals of Allergy, Asthma & Immunology, 2001
Vitamin supplements are used more commonly in normal healthy subjects than in patients with vitamin deficiency. Thiamine (vitamin B,) is the vitamin that most frequently induces allergic reactions. To the best of our knowledge, no case of anaphylaxis to riboflavin (vitamin B2) has thus far been reported in the literature.We describe a previously ...
L S, Ou, M L, Kuo, J L, Huang
openaire   +2 more sources

Vitamin B2

1985
Vitamin B2 is an isoalloxazine derivative with a ribitol side chain (Figure 28). It is an orange yellow crystalline compound, sparingly soluble in water, heat stable at normal temperatures, but unstable in alkali solution and on exposure to ultraviolet light.
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Biosynthesis of vitamin B2.

European journal of biochemistry, 2002
GTP cyclohydrolase II catalyzes the hydrolytic release of formate and pyrophosphate from GTP producing 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate, the first committed intermediate in the biosynthesis of riboflavin. The enzyme was shown to contain one zinc ion per subunit. Replacement of cysteine residue 54, 65 or 67 with serine resulted
Kaiser, Johannes, Schramek, Nicholas, Schuster, Michael, Eberhardt, Sabine, Püttmer, Stefanie, Bacher, Adelbert   +5 more
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Vitamin B2 (Lactoflavin)

1940
Wie wir bereits bei der Besprechung des Vitamin B-Komplexes gesehen haben, konnten im Jahre 1926 Goldberger und Mitarbeiter (1) zeigen, das das Vitamin B aus zwei verschiedenen Faktoren bestand, dem antineuritischen Faktor und einem zweiten Faktor, der von Goldberger und Mitarbeitern (1) als identisch mit dem Antipellagrafaktor des Menschen angenommen ...
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Nomenclature of Vitamin B2

Nature, 1935
PERHAPS it is useful to direct attention to the above subject before confusion gets worse confounded. It was pointed out in 1931 that the use of the terms vitamin B2 and anti-dermatitis (anti-pellagra?) factor interchangeably was already causing difficulties1. The discovery by Kuhn and his co-workers that lactofiavine is able to supplement a vitamin B2-
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