Results 21 to 30 of about 63,427 (306)
Scientific opinion on the tolerable upper intake level for vitamin B6
EFSA Journal, 2023 Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientific opinion on the tolerable upper intake level (UL) for vitamin B6.
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) +20 more
doaj +1 more source
Journal of Biological Chemistry, 1969 Abstract The effect of pH on the relative distribution of pyridoxal structures in aqueous solution was examined by fluorescence spectroscopy. The hemiacetal structure, which is the predominant species at neutral pH, exhibits a symmetrical emission band at 378 mµ and is characterized by a quantum yield of 0.08.
J E, Wampler, J E, Churchich
openaire +2 more sources
Determination of pyridoxal phosphate and pyridoxal by the cyanohydrin method
Pyridoxal phosphate is a coenzyme in about 50 known enzymatic reactions. A simple and accurate method for the determination of pyridoxal phosphate would be desirable because it could provide a means to assess the nutritional status of vitamin B₆ in the ...
Chang, Susan Shao-Shu King
core +6 more sources
Biosynthesis of food constituents: Vitamins. 2. Water-soluble vitamins: Part 1 - a review
Czech Journal of Food Sciences, 2007 This review article gives a survey of the generally accepted biosynthetic pathways that lead to water-soluble vitamins in microorganisms, plants and some animals.
Jan Velíšek, Karel Cejpek
doaj +1 more source
Transamination of α-keto acids catalyzed by pyridoxals
上海师范大学学报. 自然科学版, 2016 In this paper,we designed and synthesized a series of pyridoxals tagged with different functional groups.The pyridoxals exhibited high catalytic activity in transamination of α-keto acids to obtain various amino acids in good yields.This transamination ...
CHEN Jing, ZHAO Junyu, ZHAO Baoguo
doaj +1 more source
Simultaneous Determination of Underivatized Vitamin B1 and B6 in Whole Blood by Reversed Phase Ultra High Performance Liquid Chromatography Tandem Mass Spectrometry. [PDF]
PLoS ONE, 2015 Vitamin B1 (thiamine-diphosphate) and B6 (pyridoxal-5'phosphate) are micronutrients. Analysis of these micronutrients is important to diagnose potential deficiency which often occurs in elderly people due to malnutrition, in severe alcoholism and in ...
Johan Puts +3 more
doaj +1 more source
Prebiotic Synthesis of Aspartate Using Life’s Metabolism as a Guide
Life, 2023 A protometabolic approach to the origins of life assumes that the conserved biochemistry of metabolism has direct continuity with prebiotic chemistry. One of the most important amino acids in modern biology is aspartic acid, serving as a nodal metabolite
Stuart A. Harrison +3 more
doaj +1 more source
Current Advances on Structure-Function Relationships of Pyridoxal 5′-Phosphate-Dependent Enzymes
Frontiers in Molecular Biosciences, 2019 Pyridoxal 5′-phosphate (PLP) functions as a coenzyme in many enzymatic processes, including decarboxylation, deamination, transamination, racemization, and others.
Jing Liang +4 more
semanticscholar +1 more source
Foods, 2022 A new rapid and accurate method was developed for simultaneous determination of pyridoxine and pyridoxal in ginkgo seeds, using ultra-performance liquid chromatography (UPLC) equipped with a fluorescence detector.
Yuan Gao +5 more
doaj +1 more source
Dietary Vitamin B6 Deficiency Impairs Gut Microbiota and Host and Microbial Metabolites in Rats
Biomedicines, 2020 Vitamin B6 plays a crucial role as a cofactor in various enzymatic reactions but bacteria-produced vitamin B6 is not sufficient to meet host requirements.
Shyamchand Mayengbam +2 more
doaj +1 more source