Effect of Trace Metals on Aflatoxin Production by Aspergillus flavus

Maggon, K. K.; Gopal, S.; Subramanian, T. A. V.

doi:10.1016/s0015-3796(17)30730-8

Cited by 21 publications

(22 citation statements)

References 12 publications

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“…Apparently the Zn 2+ requirement for the biosynthesis of the same amount of aflatoxin will vary with the natural food substrate on which the fungus grows. This partially explains the widely varying values (0.4-50 mg) of Zn 2+ required for optimal toxin production reported by different investigators (6,7,13).…”

Section: Discussionmentioning

confidence: 86%

The role of zinc in the aflatoxigenic potential of Aspergillus flavus NRRL 3251 on foodstuffs

Obidoa

Ndubuisi

1981

Mycopathologia

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on AbstractThe production of total aflatoxin (Bl, B2, M 1 and M2) in ten tropical foodstuffs (with and without zinc enrichment) inoculated with Aspergillusflavus NRRL 3251 was examined to determine the effect of zinc on aflatoxigenic potential. Aflatoxin production was not linearly correlated with zinc levels of the food substrates, The data presented indicate that optimal zinc requirement for maximal aflatoxin production was substrate specific.

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Section: Discussionmentioning

confidence: 86%

The role of zinc in the aflatoxigenic potential of Aspergillus flavus NRRL 3251 on foodstuffs

Obidoa

Ndubuisi

1981

Mycopathologia

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“…He observed maximum toxin production in zinc free medium while at levels 0.1 -0.2 lg zinc/ml in the medium toxin production was completely inhibited. This wide divergence is thought to be the result of strain differences [21,22,26], of various endogenous levels of minor elements in the basal medium [17,24] and of the low levels of aflatoxin produced in chemically defined media [12,30]. Table 2 shows the effects of radiation and metals on the production of aflatoxin B 1 by A. flavus in crushed corn.…”

Section: Type Element Level [Ppm] Incubation Period [Days]mentioning

confidence: 99%

“…The effect of some minor elements on the biosynthesis of aflatoxin by Aspergillus flavus and Aspergilus parasiticus has been reviewed [17,20,21,22,23,24]. The authors found that iron, copper, zinc, manganese, molybdenum, calcium and magnesium enhanced the growth of Aspergillus flavus and A. parasiticus.…”

Section: Introductionmentioning

confidence: 99%

Correlation of growth and aflatoxin production by Aspergillus flavus with some essential metals in gamma irradiated crushed corn

Aziz¹,

Shahin

Abou‐Zeid

et al. 2000

Nahrung

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The effects of gamma irradiation and some essential metals on growth and aflatoxin B1 production by Aspergillus flavus in crushed corn were investigated. The production of aflatoxin by A. flavus was influenced by the addition of zinc, copper or iron and the effect gradually decreased with increasing metal concentration from 0 to 300 ppm. A. flavus grew and depleted zinc, copper and iron at initial concentration of 100, 200 or 300 ppm. Presence of 100 ppm zinc, copper or iron plus gamma irradiation (0.5, 1.0, 2.0 kGy) enhanced the growth of A. flavus and the production of aflatoxin in contrast with irradiated samples alone. A. flavus was able to metabolize and deplete elements in all gamma-irradiated samples. These results suggest that stricter control of element levels in gamma irradiated grains could control aflatoxin contamination.

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“…None of the lots was inoculated. Maggon et al (1973) studied the effects of micronutrients on aflatoxin biosynthesis, finding that toxin production was stimulated by copper but inhibited by cadmium, barium and vanadium. Seeds of Sunbelt Runner sampled prior to storage exhibited levels of natural infection and aflatoxin production comparable to Florunner.…”

Section: Aflatoxinmentioning

confidence: 99%