Mycobiota and aflatoxins in a peanut variety grown in different regions in the state of São Paulo, Brazil

Atayde, Danielle Diniz; Reis, Tatiana Alves dos; Godoy, Ignácio José de; Zorzete, Patrícia; Reis, Gabriela Martins; Corrêa, Benedito

doi:10.1016/j.cropro.2011.11.013

Cited by 31 publications

(19 citation statements)

References 20 publications

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“…Porém, para sementes de amendoim, a separação por densidade promovida pela mesa densimétrica não foi capaz de selecionar lotes com boa qualidade sanitária, pois não alterou os níveis de infecção (Tabela 2). Os patógenos encontrados são considerados fungos de armazenamento, e a contaminação é geralmente decorrente do contato com o solo, no momento da colheita (Atayde et al, 2012) (Bittencourt et al, 2007;Barbosa et al, 2013;Santos et al, 2013b).…”

Section: Resultsunclassified

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Barbosa

Vieira

Martins

et al. 2014

Pesq. agropec. bras.

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Physiological and health quality of peanut seeds during the production processAbstract -The objective of this work was to evaluate the effect of production process stages on the physiological and health quality of peanut seeds. A completely randomized design with 12 treatments and four replicates was used. Treatments consisted of plant uprooting, plant gathering, transportation, drying, storage (two, four, and six months), and the following processing steps: mechanical threshing, classification by size, separation by density and color, and chemical treatment. Water content, health quality, germination, and vigor of seeds were evaluated after each treatment. Aspergillus spp. and Penicillium sp. were found in the seeds. In the first year, after mechanical threshing, seeds showed a reduced performance. In the production process, storage promoted the infection of 100% of the seeds by Aspergillus spp. The chemical treatment was effective in restoring seed health quality. Mechanical threshing steps and storage reduce the seed quality of peanut.

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Section: Resultsunclassified

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Barbosa

Vieira

Martins

et al. 2014

Pesq. agropec. bras.

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“…The minimum water activity required for growth of toxigenic fungi ranges from 0.78 to 0.80. No fungal growth is generally observed below a value of 0.60 [25]. The contamination of peanuts with aflatoxins is mainly produced by the A. flavus and Aspergillus parasiticus species.…”

Section: Aflatoxin In Peanutsmentioning

confidence: 97%

Peanut proteins: Applications, ailments and possible remediation

Ghatak

Sen

2013

Journal of Industrial and Engineering Chemistry

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“…In a similar study by these authors on soil samples of peanut-growing region in Argentina during 1998-2001, it was shown that 80 % of 369 A. flavus isolates produced both AF and CPA [30]. flavus was the most frequent species of the genus Aspergillus (13.4 %) [32]. Nesci et al (2011) showed that among the Aspergillus populations recovered from peanut seeds in Argentina, A. flavus was the most frequently isolated (79 %), and A. parasiticus (5.9 %) was the third prevalent species [33].…”

Section: Discussionmentioning

confidence: 92%

Mycotoxin-Producing Ability and Chemotype Diversity of Aspergillus Section Flavi from Soils of Peanut-Growing Regions in Iran

et al. 2012

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Invasion of crops with Aspergillus flavus may result in contamination of food and feed with carcinogenic mycotoxins such as aflatoxins (AF) and cyclopiazonic acid (CPA). In the present study, distribution and toxigenicity of Aspergillus flavus and A. parasiticus in soils of five peanut fields located in Guilan province, Northern Iran was investigated. From a total of 30 soil samples, 53 strains were isolated which all of them were finally identified as A. flavus by a combination of colony morphology, microscopic criteria and mycotoxin profiles. Chromatographic analysis of fungal cultures on yeast extract sucrose broth by tip culture method showed that 45 of the 53 A. flavus isolates (84.9 %) were able to produce either CPA or AFB 1 , while eight of the isolates (15.1 %) were non-toxigenic. The amounts of CPA and AFB 1 produced by the isolates were reported in the range of 18.2-403.8 lg/g and 53.3-7446.3 lg/g fungal dry weights, respectively. Chemotype classification of A. flavus isolates based on the ability for producing mycotoxins and sclerotia showed that 43.4 % were producers of CPA, AFB 1 and sclerotia (group I), 13.2 % of CPA and AFB 1 (group II), 9.4 % of AFB 1 and sclerotia (group III), 13.2 % of AFB 1 (group IV), 5.7 % of CPA and sclerotia (group V) and 15.1 % were non-toxigenic with no sclerotia (group VI). No strain was found as producer of only CPA or sclerotia. These results indicate different populations of mycotoxigenic A. flavus strains enable to produce hazardous amounts of AFB 1 and CPA are present in peanuts field soils which can be quite important regard to their potential to contaminate peanuts as a main crop consumed in human and animal nutrition.

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Mycobiota and aflatoxins in a peanut variety grown in different regions in the state of São Paulo, Brazil

Cited by 31 publications

References 20 publications

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Peanut proteins: Applications, ailments and possible remediation

Mycotoxin-Producing Ability and Chemotype Diversity of Aspergillus Section Flavi from Soils of Peanut-Growing Regions in Iran

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