Results 171 to 180 of about 2,492 (207)
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Interaction of citrinin and ochratoxin A
Natural Toxins, 1994AbstractThe mycotoxins citrinin and ochratoxin A are produced in common by some molds and have been found together in a number of foods and animal feeds. We used in vitro tests to determine if the Same effects are produced by these two mycotoxins when they act both independently and together.
R C, Braunberg +3 more
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The dialysis of Ochratoxin A (OTA)
Mycotoxin Research, 2001Standard dialysis did not result in a decrease of the OTA level in the blood serum of patients regularly treated by dialysis. Therefore, we examined the effect of dialysis on both OTA bound to the blood plasma proteins and free OTA. We carried out an in vivo experiment to determine OTA levels in the serum of patients in the terminal stage of chronic ...
F, Malir +10 more
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Determination of ochratoxin A in beer
Food Additives and Contaminants, 1995Because of concern about possible transmission of ochratoxin A (OA) from contaminated grain adjuncts, development of a sensitive method for its determination in beer was investigated. Solid phase extraction (SPE) on C-18 and silica gel columns in series and on an immunoaffinity column (OchraTest) were used to obtain extracts for quantitation by reverse
P M, Scott, S R, Kanhere
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Immunotoxic activity of ochratoxin A
Journal of Veterinary Pharmacology and Therapeutics, 2006Ochratoxin A (OTA) is an immunosuppressant fungal compound, produced by toxigenic species ofAspergillusandPenicilliumfungi in a wide variety of climates and geographical regions. The contamination of food by this mycotoxin takes place primarily during preharvest periods. Almost all types of food can be contaminated.
L, Al-Anati, E, Petzinger
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2000
Abstract Ochratoxins are mycotoxins containing a chlorinated dihydroisocoumarin linked through a 7-carboxyl group to Lphenylalanine by an amide bond. The major toxin, ochratoxin A, also exists in the hydroxylated form; in contrast, its dechloro analog, ochratoxin B, is considered less toxic.
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Abstract Ochratoxins are mycotoxins containing a chlorinated dihydroisocoumarin linked through a 7-carboxyl group to Lphenylalanine by an amide bond. The major toxin, ochratoxin A, also exists in the hydroxylated form; in contrast, its dechloro analog, ochratoxin B, is considered less toxic.
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Synthesis of analogues of ochratoxin A
Natural Product Research, 2012Four analogues of ochratoxin A (OTA) differing for the aminoacidic moiety were synthesised using ochratoxin α (OTα) as the starting material. The condensation reaction between protected amino acids and OTα, carried out in the presence of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC • HCl) and N-hydroxybenzotriazole (HOBt) as ...
Plastina P. +4 more
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In this section, ochratoxins are described in general, and their effects on human health and the toxic effects are particularly discussed. Ochratoxins are considered to be among the mycotoxins with significant health implications due to their widespread presence in food and feed.
Izem Bilinmis +2 more
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Izem Bilinmis +2 more
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Journal of Environmental Science and Health, Part B, 1979
The fate of ochratoxin A (OA) was studied in goats given a single oral dose of 3H-OA (0.5 mg/kg). More than 90% of the radioactivity was found to be excreted in 7 days and the majority (53%) was found in feces. Thirty-eight percent, 6% and 2.26% of the activity was found in urine, milk and serum, respectively.
W K, Nip, F S, Chu
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The fate of ochratoxin A (OA) was studied in goats given a single oral dose of 3H-OA (0.5 mg/kg). More than 90% of the radioactivity was found to be excreted in 7 days and the majority (53%) was found in feces. Thirty-eight percent, 6% and 2.26% of the activity was found in urine, milk and serum, respectively.
W K, Nip, F S, Chu
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2001
Recommendations. Studies should be conduced to clarify the mechanism by which ochratoxin A induces nephhrotoxicity and carcinogenicity. Appropriate sampling procedures should be developed for food commodities likely to be contaminated with ochratoxin A.
Pleština, Radovan, Fuchs, Radovan
openaire
Recommendations. Studies should be conduced to clarify the mechanism by which ochratoxin A induces nephhrotoxicity and carcinogenicity. Appropriate sampling procedures should be developed for food commodities likely to be contaminated with ochratoxin A.
Pleština, Radovan, Fuchs, Radovan
openaire