Results 131 to 140 of about 12,401 (162)

Difficulties in fumonisin determination: the issue of hidden fumonisins

Analytical and Bioanalytical Chemistry, 2009
In this paper, the results obtained by five independent methods for the quantification of fumonisins B(1), B(2), and B(3) in raw maize are reported. Five naturally contaminated maize samples and a reference material were analyzed in three different laboratories.
DALL'ASTA, Chiara, MANGIA, Mattia, GALAVERNA, Gianni, DOSSENA, Arnaldo, MARCHELLI, Rosangela, BERTHILLER F., MOLINELLI A., SULYOK M., SCHUHMACHER R., KRSKA R.   +9 more
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Analysis of heat-processed corn foods for fumonisins and bound fumonisins

Food Additives and Contaminants, 2004
Thirty retail samples of heat-processed corn foods, i.e. corn flakes, corn-based breakfast cereals, tortilla chips and corn chips, were analysed for fumonisins--fumonisin B1 (FB1), fumonisin B2 (FB2) and hydrolysed FB1 (HFB1)--as well as for protein- and total-bound FB1. Bound (hidden) fumonisins cannot be detected by conventional analysis.
J W, Park, P M, Scott, B P Y, Lau, D A, Lewis   +3 more
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Targeting Fumonisin Biosynthetic Genes

2016
The fungus Fusarium is an agricultural problem because it can cause disease on most crop plants and can contaminate crops with mycotoxins. There is considerable variation in the presence/absence and genomic location of gene clusters responsible for synthesis of mycotoxins and other secondary metabolites among species of Fusarium.
Robert H, Proctor, Martha M, Vaughan
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Fumonisin mycotoxins in human hair

Biomarkers, 2003
This study shows for the first time the accumulation of fumonisin mycotoxins in human hair of population clusters exposed to contaminated maize, and thus the feasibility of human hair analysis for the assessment of past fumonisin exposure. Composite hair samples were obtained from the Bizana, Butterworth and Centane districts within the Transkei region
Vikash, Sewram, Ndumiso, Mshicileli, Gordon S, Shephard, Walter F O, Marasas   +3 more
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Chemical Transformation of Hydrolyzed Fumonisin B1 to Hydrolyzed Fumonisin B2

Journal of Agricultural and Food Chemistry, 1995
The fumonisins, a series of sphingosine-analog mycotoxins produced by the ubiquitous corn contaminant Fusarium moniliforme, are an important food safety concern because they are tumor promoters with sufficient chemical stability to persist through normal food processing.
Farid A. Badria, Hamed K. Abbas, W. Thomas Shier   +2 more
openaire   +1 more source

Determination of fumonisins in milk

Journal of Environmental Science and Health, Part B, 1994
Fumonisin B1 (FB1) and fumonisin B2 (FB2) were determined in milk by liquid chromatography (LC) following immunoaffinity column cleanup. Recoveries from milk spiked with 5-50 ng each fumonisin/ml averaged 79-109%. The aminopentol hydrolysis product of FB1 (AP1) was determined by LC after cleanup on a C18 solid phase phase extraction column; mean ...
P M, Scott, T, Delgado, D B, Prelusky, H L, Trenholm, J D, Miller   +4 more
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Fumonisins and human health

Annals of Tropical Paediatrics, 1998
Fumonisins are mycotoxins produced by Fusarium moniliforme that are prevalent in corn, sorghum, millet and other agricultural products. It is possible that fumonisins are aetiological agents in human oesophageal cancers. The International Agency for Research on Cancer have designated toxins derived from F. moniliforme as group 2B (possibly carcinogenic
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Hidden fumonisin in corn flakes

Food Additives & Contaminants, 2003
Twenty-five samples of retail corn flakes (from 15 lots) were analysed for fumonisin B(1) (FB(1)) and fumonisin B(2) (FB(2)). They were detected in 22 and 12 samples, respectively, at respective mean concentrations 68 and 8 ng g(-1). Samples were extracted with methanol-acetonitrile-water (25:25:50) and there was an excellent correlation for FB(1 ...
Eun-Kyung, Kim, P M, Scott, B P-Y, Lau
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Foods and fumonisins

European Food Research and Technology, 2001
Fumonisins are synthesized by different species of the genus Fusarium but the most significant producers are Fusarium moniliforme and Fusarium proliferatum. The fumonisins belong to the most important toxic fungal metabolites. Maize and maize products are mainly contaminated.
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Fumonisin Toxicity and Sphingolipid Biosynthesis

1996
Fumonisins are inhibitors of sphinganine (sphingosine) N-acyltransferase (ceramide synthase) in vitro, and exhibit competitive-type inhibition with respect to both substrates of this enzyme (sphinganine and fatty acyl-CoA). Removal of the tricarballylic acids from fumonisin B1 reduces the potency by at least 10 fold; and fumonisin A1 (which is ...
A H, Merrill, E, Wang, T R, Vales, E R, Smith, J J, Schroeder, D S, Menaldino, C, Alexander, H M, Crane, J, Xia, D C, Liotta, F I, Meredith, R T, Riley   +11 more
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