Fungos e aflatoxinas no arroz: ocorrência e significado na saúde do consumidor

Katsurayama, Aline Machado; Taniwaki, Marta Hiromi

doi:10.1590/1981-6723.0617

Cited by 14 publications

(12 citation statements)

References 41 publications

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“…occurrence of aflatoxigenic fungi and aflatoxins in rice from different parts of the world has been published elsewhere (Katsurayama and Taniwaki, 2017).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Occurrence of Aspergillus section Flavi and aflatoxins in Brazilian rice: From field to market

Katsurayama

Martins

Iamanaka

et al. 2018

International Journal of Food Microbiology

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The guarantee of the high quality of rice is of utmost importance because any toxic contaminant may affect consumer health, especially in countries such as Brazil where rice is part of the daily diet. A total of 187 rice samples, from field, processing and market from two different production systems, wetland from the state of Rio Grande do Sul, dryland, from the state of Maranhão and market samples from the state of São Paulo, were analyzed for fungi belonging to Aspergillus section Flavi and the presence of aflatoxins. Twenty-three soil samples from wetland and dryland were also analyzed. A total of 383 Aspergillus section Flavi strains were isolated from rice and soil samples. Using a polyphasic approach, with phenotypic (morphology and extrolite profiles) and molecular data (beta-tubulin gene sequences), five species were identified: A. flavus, A. caelatus, A. novoparasiticus, A. arachidicola and A. pseudocaelatus. This is the first report of these last three species from rice and rice plantation soil. Only seven (17%) of the A. flavus isolates produced type B aflatoxins, but 95% produced kojic acid and 69% cyclopiazonic acid. Less than 14% of the rice samples were contaminated with aflatoxins, but two of the market samples were well above the maximum tolerable limit (5μg/kg), established by the Brazilian National Health Surveillance Agency.

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“…occurrence of aflatoxigenic fungi and aflatoxins in rice from different parts of the world has been published elsewhere (Katsurayama and Taniwaki, 2017).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Occurrence of Aspergillus section Flavi and aflatoxins in Brazilian rice: From field to market

Katsurayama

Martins

Iamanaka

et al. 2018

International Journal of Food Microbiology

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“…Fungi infection is the main cause of stored grain damages worldwide after insects infestation (Verga and Teren, 2005). Fungi are indicators of grains quality (deterioration) and safety (mycotoxins producers), thus responsible for causing serious damages to human and animals health (Katsurayama and Taniwaki, 2017). Among the toxins producers, the Aspergillus and Penicillium genera are the most important in the storage and need to be controlled (Scussel et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of cold plasma on black beans (Phaseolus vulgaris L.), fungi inactivation and micro-structures stability

Runtzel

Silva²,

Silva

et al. 2019

Emir J Food Agric

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The Cold Plasma (CP) treatment efficiency to inactivate naturally fungi contaminated beans (Phaseolus vulgaris L.), Class black, and the effects in micro-structures stability were investigated. Kernels were exposed to CP (8 kv intensity and 510W power) at different times (5, 10, 20 and 30 min) followed by incubation to verify the antifungal effect and their micro-structural resistance through microscopy (stereo –SM and scanning electron - SEM) observation. The treatment was effective to fungal inactivation when exposed to CP (10-30 min). It also inhibited bean germination during the longest treatment exposure (20-30 min). Regarding germination, only when CP was applied during the shortest period of time (5 min) had a positive effect (improved its speed: hypocotyl & radicle length increased), when compared to Control. Some morphological alterations were registered by SM, either on testae (wrinkling) and cotyledons (color changes). Indeed, through SEM, both testae and cotyledon structures showed the disrupting effects on their cell membranes during the treatment more power. The CP treatment, under the current conditions applied, showed effective for fungi inactivation, although it affected some kernel micro-structures and germination. Therefore, further studies will be carried out regarding adjustments on CP conditions, to improve treated beans quality.

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“…Apresentam estruturas químicas distintas, e baixo peso molecular, podendo causar doenças ou morte quando ingeridas por animais ou humanos (Katsurayama & Taniwaki, 2017).…”

Section: Introductionunclassified

Contaminação por fungos e micotoxinas em grãos de trigo do Paraná e importado do Paraguai

Kolling

Nozaki

Corrêia

et al. 2020

RSD

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O trigo (Triticun aestivum L.) é um dos cereais mais produzidos no mundo. Há limitações como o excesso de chuvas e altas temperaturas que facilitam a incidência de doenças, e no armazenamento de grãos, cria-se um microclima ideal, podendo ocasionar a produção de micotoxinas. Portanto esse trabalho teve como objetivo avaliar a qualidade fitossanitária em grãos de trigo do Oeste do Paraná e de importação do Paraguai. As amostras de trigo foram coletadas de cooperativas agrícolas, sendo 4 lotes do Paraguai e 4 lotes do Oeste do Paraná. A análise de micotoxinas foi realizada através de um laboratório de análise de rações e a análise de contaminação fúngica foi realizada na PUCPR campus Toledo, pelo método do papel filtro (Blotter test), pela incubação dos grãos em caixas gerbox, com 50 sementes. Após 7 dias foi analisado os gêneros de fungos e a percentagem de incidência de cada. Os dados foram submetidos a análise de Kruskal – Wallis para comparação das médias ao nível de 5% de significância. As micotoxinas contaminantes nos lotes de trigo do Oeste do Paraná e Paraguai não foram necessariamente relevantes para a segurança alimentar de acordo com as normativas e o índice de Zearalenona foi superior para um dos lotes oriundo do Paraguai. Para a incidência de fungos um lote do Oeste do Paraná teve maior contaminação de Colletotrichum spp. e Fusarium spp., enquanto que de importação do Paraguai, foi para Rhizopus spp. e Bipolaris spp.

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Fungos e aflatoxinas no arroz: ocorrência e significado na saúde do consumidor

Cited by 14 publications

References 41 publications

Occurrence of Aspergillus section Flavi and aflatoxins in Brazilian rice: From field to market

Occurrence of Aspergillus section Flavi and aflatoxins in Brazilian rice: From field to market

Effect of cold plasma on black beans (Phaseolus vulgaris L.), fungi inactivation and micro-structures stability

Contaminação por fungos e micotoxinas em grãos de trigo do Paraná e importado do Paraguai

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