Anti-Fusarium moniliforme activity and fumonisin biodegradation by corn and silage microflora

A mixed microbial culture degrading fumonisin B l was obtained from soil samples using an enrichment culture procedure. A bacterial isolate from the enrichment culture (strain NCB 1492) degraded fumonisin B1 after incubation for 3 h, as indicated by TLC and HPLC analysis. On the basis of the sequence analysis of 16S rDNA, strain NCB 1492 was related to the Delftia/Comamonas group. Thin-layer chromatographic analysis indicated the presence of metabolites in the NCB 1492 culture filtrates after degradation of fumonisin B1 supplied as sole carbon and nitrogen source in phosphate buffer. Four metabolites were identified by mass spectrometry analysis.

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“…More recently, the isolation of two Bacillus spp. strain and a yeast able to partially degrade fumonisin was also reported (Camilo et al 2000).…”

Section: Introductionmentioning

confidence: 93%

Degradation of Fumonisin B1 by a Bacterial Strain Isolated from Soil

et al. 2006

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“…and a yeast, obtained from silage and corn, respectively, which showed intense proliferation and antifungal activity which impeded the growth of F. moniliforme (11). These three sporulated bacilli and yeast were subsequently shown to degrade 43-83% and 57%, respectively, of the initial FB 1 concentration in a corn culture inoculated with F. moniliforme (12).…”

Section: Prevention Control and Effects Of Processingmentioning

confidence: 99%

Mycotoxin research in Brazil: the last decade in review

Rodriguez–Amaya

Sabino

2002

Braz. J. Microbiol.

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The number of research papers (128 papers) on mycotoxins published by Brazilian researchers in 1991-2000 surpassed the total number (85 papers) published in the preceding three decades . Thirty percent of the papers surveyed mycotoxins in foods and feeds. AFs in peanut and peanut products continued to be alarming, and high incidence and levels of FBs in corn and corn products also appeared as a serious problem. Contamination with other toxins, such as ZEA, OTA and trichothecenes, was low. Occurrence of AFM 1 in milk and dairy products and patulin in apple juice needs to be verified as the results are somewhat diverging. Work on analytical methods, mycological examination and toxic effects constituted 16, 13 and 13%, respectively, of the published papers in the decade assessed. Attempts to find means of preventing/controlling fungal growth and mycotoxin production notably increased, making up 27% of the papers, including investigations on influencing factors (e.g. genotype resistance, water content/a w , relative humidity, temperature, presence of metals, type of soil, mite infestation) and antagonistic potential of other microorganisms against mycotoxin-producing fungi. Effects of plant extract, flavonoids, fungicides and other chemicals, storage bag material, adsorbents, cooking and processing of food were also studied. Thus, notwithstanding constraints on resources, Brazilian research responds to the needs of the country, reflects international concerns and recent developments in the area.

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“…Other researchers have reported degradation or detoxiication of fumonisin, including by-products, by oxidative deaminase from Exophiala sp., a common soil organism [42][43][44]. Bacillus sp., including non-Saccharomyces yeast commonly found in soil, were also suggested to destabilise these mycotoxins' structure, and thus reduce their amino acid functional groups albeit at elevated pH [45].…”

Section: Biological Reduction Of Mycotoxinsmentioning

confidence: 99%

Leaching of Cyanogens and Mycotoxins from Cultivated Cassava into Agricultural Soil: Effects on Groundwater Quality

Itoba-Tombo¹,

Ntwampe²,

Mudumbi³

2017

Aflatoxin-Control, Analysis, Detection and Health Risks

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Cyanogens and mycotoxins are vital in protecting lora against predation. Nevertheless, their increased concentrations and by-products in agricultural soil could result in produce contamination and decreased crop yield and soil productivity. When exposed to unsuitable weather conditions, agricultural produce such as cassava is susceptible to bacterial and fungal atack, culminating in spoilage, particularly in arid and semi-arid regions, and contributing to cyanogen and mycotoxins loading of the arable land. The movement of cyanogen including mycotoxins in such soil can result in sub-surface and/ or groundwater contamination, thus deteriorating the soil's environmental health and negatively afecting wildlife and humans. Persistent cyanogen and mycotoxins loading into agricultural soil changes its physico-chemical characteristics and biotic parameters. These contaminants and their biodegradation by-products can be dispersed from soil's surface and sub-surface to groundwater systems by permeation and percolation through the upper soil layer into underground water reservoirs, which can result in their exposure to humans and wildlife. Thus, an assessment and monitoring of cyanogen and mycotoxins loading impacts on arable land and groundwater in communities with minimal resources should be done. Overall, these toxicants impacts on agricultural soil's biotic community, afect soil's aggregates, functionality and lead to the soil's low productivity, cross-contamination of fresh agricultural produce.

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Anti-Fusarium moniliforme activity and fumonisin biodegradation by corn and silage microflora

Abstract: ABSTRACT

Cited by 19 publications

References 19 publications

Degradation of Fumonisin B1 by a Bacterial Strain Isolated from Soil

Degradation of Fumonisin B1 by a Bacterial Strain Isolated from Soil

Mycotoxin research in Brazil: the last decade in review

Leaching of Cyanogens and Mycotoxins from Cultivated Cassava into Agricultural Soil: Effects on Groundwater Quality

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