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Showing 1 to 20 of 81 for “"Aflatoxin"”.
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Aflatoxin in corn drying
Relationships defining conditions conducive for aflatoxin production by Aspergillus f!avus were coupled with a non-equilibrium corn drying model and used to determine constant drying conditions indicating a potential for aflatoxin development. Airflow rates of 0.8 to 16 m³/min/m³ in 18, 20, 22% …
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Demand for certified aflatoxin-free grains
… unsafe food is through toxic contaminants like aflatoxins. Aflatoxins are a family of carcinogenic toxins found commonly in agricultural crops in warm and humid regions, and chronic exposure can result in liver cancer, lung cancer, growth retardation, immunosuppression among others. A warming …
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Resistance to Aspergillus ear rot and aflatoxin
… selected (35 total F$\sb1$'s) and analyzed for aflatoxin content. In 1992, inheritance of resistance to A. flavus ear rot was studied in the 35 crosses involving the parental, F$\sb1$, F$\sb2$, and backcross to the susceptible parent generations. The F$\sb3$ generations were also evaluated for …
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Evaluation of aflatoxin-related products from ozonated corn
… efficacy of the ozonation process in degrading aflatoxin in corn, and investigated the chemical reaction between aflatoxin and gaseous ozone. Ozonation (12-13 wt%) totally degraded aflatoxin B1 in a model system. Conversion of aflatoxin into polar compounds was observed during ozonolysis of 100 …
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Effect of aflatoxin on mitochondrial transcription and translation
The effect of aflatoxin B₁ on RNA synthesis in phosphate-swollen rat liver mitochondria was examined. In the assay system used the incorporation of ³H-UTP into acid-insoluble product was inhibited 52% by actinomycin D (50µg/ml) and the labeled product was sensitive to pancreatic RNase. Aflatoxin B₁ …
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Effect of aflatoxin B{u2081} on mitochondrial function
The mycotoxin, aflatoxin B₁, elaborated by the fungus Aspergillus flavus is a coumarin-type compound. This compound has previously been reported in the literature to have an effect on rat liver mitochondria, although the reports are inconsistent. The effect of this compound on oxygen consumption by …
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AFlatoxin residues in edible tissue of poultry in Zambia
The aflatoxins, toxins produced by the fungus Aspergillus flavus, have been detected in both imported as well as locally grown maize in Zambia.The problem of toxicity caused by the ingestion of aflatoxin-contaminated maize was approached by determining the levels of residues in edible tissue of …
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AFlatoxin residues in edible tissue of poultry in Zambia
The aflatoxins, toxins produced by the fungus Aspergillus flavus, have been detected in both imported as well as locally grown maize in Zambia.The problem of toxicity caused by the ingestion of aflatoxin-contaminated maize was approached by determining the levels of residues in edible tissue of …
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Mid-Infrared Spectral Characterization of Aflatoxin Contamination in Peanuts
… secondary metabolites of certain fungi, namely aflatoxins present a great health hazard when exposed either at low levels for prolonged times (carcinogenic) or at high levels at once (poisonous). It is important to develop an accurate and rapid measurement technique to trace the aflatoxin and/or …
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DNA Repair Mechanisms, Aflatoxin B1-Induced DNA Damage and Carcinogenesis
… the relationship between DNA repair mechanisms, aflatoxin B1 (AFB1)-induced DNA damage and carcinogenesis. Mice deficient in 8-oxoguanine glycosylase (OGG1, the rate-limiting enzyme in repair of oxidized guanine), mice heterozygous for OGG1, and wild type mice, were exposed to a single …
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Investigation of methods for reducing aflatoxin contamination in distillers grains
… overall goal of this project was to reduce the aflatoxin level in the final coproduct of ethanol bioprocessing--DDGS. This was pursued by examining the effects of reduction of aflatoxin in the incoming corn prior to bioprocessing, the degradation of aflatoxin in the intermediate products, namely …
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SYNTHETIC OVERSAMPLING IMPROVES SPECTRAL DETECTION OF AFLATOXIN IN SINGLE MAIZE KERNELS
Current spectral models for detection of aflatoxin (AF) in maize kernels are limited by very low representation of kernels with AF levels above the models’ specified contamination thresholds. With the aim of improving prediction model sensitivity to AF-contaminated kernels, two methods were …
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Mutagenesis by the primary aflatoxin B₁ DNA adduct in Escherichia coli
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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The toxicity and mutagenicity of the aflatoxin B₁ formamidopyrimidine DNA adduct
Aflatoxin B1 (AFB1) is a fungal metabolite that contaminates the food supply in certain areas of the world. It is produced by Aspergillusflavus and related fungi that grow on improperly stored foods such as corn, rice, and peanuts. Epidemiological studies have shown a correlation between exposure …
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Interaction of aflatoxin B1 with the ribosomal RNA genes of rat liver
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nutrition and Food Science, 1983.
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Effects of aflatoxin B₁ (AFB₁) on hepatic gene expression in pigs and turkeys
… powder to ameliorate the adverse effects of aflatoxin B1 (AFB1) on performance of pigs and, to identify changes in gene expression in liver of pigs fed aflatoxin (AF). Twenty crossbred weanling pigs were weighed, ear-tagged, and assigned to each of four dietary treatments, which included: 1) …
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Inheritance of Aspergillus Ear Rot and Aflatoxin Resistance From the Tex6 Corn Line
… from the midparent value toward resistance for aflatoxin production and toward susceptibility for ear rot in both crosses. In the B73 $\times$ Tex6 cross, generation mean analysis indicated additive gene action was the most important type of gene action controlling resistance to ear rot and to …
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