Irradiation Stability of Folic Acid in Powder and Aqueous Solution.
Summary of "Irradiation Stability of Folic Acid in Powder and Aqueous Solution."
This study attempts to examine the folic acid stability after irradiation treatment, under different physical states, pH values, and atmosphere conditions. Aqueous folic acid samples, folic acid in powder, and wheat flour fortified with folic acid were irradiated by an electron beam (E-beam) between 0 (control) and 10.0 kGy. It was realized that the physical state of folic acid plays an important role on its stability toward E-beam processing, being largely unstable in solution, no matter the pH and atmosphere conditions assayed. Otherwise, folic acid in powder showed huge irradiation stability, even when mixed in a dry food matrix, such as fortified wheat flour samples.
Affiliation
Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) , Centro de Tecnologia das Radiações, Av. Prof. Lineu Prestes, 2242, 05508-910, São Paulo, Brazil.
Journal Details
This article was published in the following journal.
Name: Journal of agricultural and food chemistry
ISSN: 1520-5118
Pages: 1244-1248
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21275389
- DOI: http://dx.doi.org/10.1021/jf103977q
Medical and Biotech [MESH] Definitions
Leucovorin
The active metabolite of FOLIC ACID. Leucovorin is used principally as its calcium salt as an antidote to folic acid antagonists which block the conversion of folic acid to folinic acid.
Folate Receptors, Gpi-anchored
Cell surface receptors that bind to and transport FOLIC ACID, 5-methyltetrahydrofolate, and a variety of folic acid derivatives. The receptors are essential for normal NEURAL TUBE development and transport folic acid via receptor-mediated endocytosis.
Pteroylpolyglutamic Acids
Derivatives of folic acid (pteroylglutamic acid). In gamma-glutamyl linkage they are found in many tissues. They are converted to folic acid by the action of pteroylpolyglutamate hydrolase or synthesized from folic acid by the action of folate polyglutamate synthetase. Synthetic pteroylpolyglutamic acids, which are in alpha-glutamyl linkage, are active in bacterial growth assays.
Folic Acid Deficiency
A nutritional condition produced by a deficiency of FOLIC ACID in the diet. Many plant and animal tissues contain folic acid, abundant in green leafy vegetables, yeast, liver, and mushrooms but destroyed by long-term cooking. Alcohol interferes with its intermediate metabolism and absorption. Folic acid deficiency may develop in long-term anticonvulsant therapy or with use of oral contraceptives. This deficiency causes anemia, macrocytic anemia, and megaloblastic anemia. It is indistinguishable from vitamin B 12 deficiency in peripheral blood and bone marrow findings, but the neurologic lesions seen in B 12 deficiency do not occur. (Merck Manual, 16th ed)
Folic Acid Transporters
Proteins involved in the transport of FOLIC ACID and folate derivatives across the CELLULAR MEMBRANE.
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