Effect of natural maize phytochemicals on Aspergillus section Flavi sclerotia characteristics under different conditions of growth media and water potential

Nesci, Andrea; Etcheverry, Miriam

doi:10.1016/j.funeco.2008.10.004

Cited by 9 publications

(4 citation statements)

References 56 publications

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“…Moreover, treatment corn grains with the tested synthetic mold inhibitors induced undesirable changes in the nutritional components of the grain. In addition, application of such chemicals is very expensive, and they are not applicable under field conditions (Nesci et al, 2008). Ground clove buds and other herbal plant oils and extracts were found to be highly effective as mold inhibitors (Moussa et al, 2005;Ghasemi et al, 2007;Marin et al, 2008;Reddy et al, 2009 andYoussef et al, 2009), locally available, cheaper, safe, applicable both under storage or field conditions and may enhance many growth parameters of corn plants.…”

Section: Discussionmentioning

confidence: 99%

Effect of Treatment with Mold Inhibitors on Plant Growth of Corn and some Nutritional Components of Stored Grains, Infected with A. flavus and F. verticilloides

El-Samra

Shama

Hamza³

et al. 2012

Int. J. Phytopathol.

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Planting sterilized corn grains in soil, treated with the mold inhibitors Fix-a-tox (FAT) or Antitox Plus (AP) resulted, in cases, in dwarfed and malformed corn plants and in the development of deformed, bone-shaped and grain-free corn cobs. Moreover, treating corn grains with the mold inhibitors before storage for one month caused significant changes in some nutritional components of corn grains, i.e. proteins, aminoacids, crude fibers, moisture, fats, ash and carbohydrates. Insignificant differences in protein percetage were detected between control inoculated with Aspergillus flavus and those treated with butyl hydroxyanisole (BHA) antioxidant or FAT treatments, whereas ground clove significantly reduced protein content. In corn grains inoculated with Fusariumverticillioides, previous treatment with FAT resulted in significant reduction in the content of proline, aspartic acid, cysteine, valine, isoleucine and leucine, whereas treatment with BHA significantly reduced the content of threonine, serine, glutamic, glycine, alanine, phenylalanine and tyrosine. In Aspergillus flavus treatments, FAT significantly increased the content of methionine and threonine, whereas, aspartic acid showed 26 percentage decreases, compared to the control. Pronounced reductions in threonine, isoleucine and leucine were also detected in corn grains treated with BHA. Significant increases in fiber content were detected in inoculated corn grains treated with BHA, attaining 1.34 to 2.05-fold over that of control, respectively. Treatment with FAT and BHA led to pronounced reductions in moisture content in corn inoculated with both F. verticilloides and A. flavus trials. However, treatment with ground clove significantly increased the moisture content in A. flavus treatment. FAT treatment led to significant increase in ash and fat contents in both A. flavus and F. verticilloides treatments, whereas the other tested treatments of F. verticilloides significantly reduced ash content. Treatment with ground clove significantly reduced fat content in A. flavus treatment. All the tested materials significantly reduced carbohydrate content.

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Section: Discussionmentioning

confidence: 99%

Effect of Treatment with Mold Inhibitors on Plant Growth of Corn and some Nutritional Components of Stored Grains, Infected with A. flavus and F. verticilloides

El-Samra

Shama

Hamza³

et al. 2012

Int. J. Phytopathol.

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“…growth [12,13,14,15,16] as well as other fungal genus such as Aspergillus spp. [17]. As regards in vitro studies on mycotoxin production, phenolic acids showed a significant inhibitory effect on type B trichothecenes [16,18,19,20] and fumonisin B1 [11,14,21].…”

Section: Introductionmentioning

confidence: 99%

Effects of Phenolic Acids on the Growth and Production of T‐2 and HT‐2 Toxins by Fusarium langsethiae and F. sporotrichioides

et al. 2016

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Abstract:The effect of natural phenolic acids was tested on the growth and production of T-2 and HT-2 toxins by Fusarium langsethiae and F. sporotrichioides, on Mycotoxin Synthetic medium. Plates treated with 0.5 mM of each phenolic acid (caffeic, chlorogenic, ferulic and p-coumaric) and controls without phenolic acid were incubated for 14 days at 25˝C. Fungal biomass of F. langsethiae and F. sporotrichioides was not reduced by the phenolic acids. However, biosynthesis of T-2 toxin by F. langsethiae was significantly reduced by chlorogenic (23.1%) and ferulic (26.5%) acids. Production of T-2 by F. sporotrichioides also decreased with ferulic acid by 23% (p < 0.05). In contrast, p-coumaric acid significantly stimulated the production of T-2 and HT-2 toxins for both strains. A kinetic study of F. langsethiae with 1 mM ferulic acid showed a significant decrease in fungal biomass, whereas T-2 production increased after 10 days of incubation. The study of gene expression in ferulic supplemented cultures of F. langsethiae revealed a significant inhibition for Tri5, Tri6 and Tri12 genes, while for Tri16 the decrease in gene expression was not statistically significant. Overall, results indicated that phenolic acids had a variable effect on fungal growth and mycotoxin production, depending on the strain and the concentration and type of phenolic acid assayed.

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“…Synthetic mould inhibitors are generally applied with stored maize grains, but they are not applicable under field conditions (Nesci 2008). Therefore, application of herbal plants products with corn grains in stores or under field conditions may serve as good alternative to the synthetic unsafe mould inhibitors.…”

Section: Discussionmentioning

confidence: 99%

Effect of some mould inhibitors and herbal plants on mycotoxins production byAspergillus flavusandFusarium verticilloidesin vitro and in stored corn grains

El-Samra

Shama

Hamza

et al. 2012

Archives Of Phytopathology And Plant Protection

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Clove oil, clove extract and butylated hydroxyanisole (BHA) completely suppressed the growth of both Fusarium verticilloides and Aspergillus flavus isolates. Black cumin and thyme extracts were more suppressive on F. verticilloides than A. flavus. Antitox-Plus (AP) had no effect on the growth of both the pathogens. The minimum inhibitory concentration (MIC) test revealed that A. flavus was more sensitive to Fix-A-Tox (FAT) and AP than F. verticilloides. In the growth media, all the tested substances, completely suppressed the production of aflatoxins by A. flavus and significantly reduced fumonisins production by F. verticilloides, particularly clove oil and extract. Treatment of immature grains with the tested mould inhibitors prior to inoculation with A. flavus and F. verticilloides significantly reduced mycotoxins production at the end of the storage period; moreover, highest reduction rates were realised by BHA and FAT. Complete or highly significant suppression of aflatoxins in mature grains were obtained by all the tested herbal and synthetic mould inhibitors. Ground clove buds contained the highest carvacrol content, whereas thymol content was higher in thyme extract. Clove oil was rich in eugenol. Alpha-tocopherol content was higher in ground black cumin (BC), followed by BC oil. Unsaturated fatty acid content was higher in thyme extract and ground BC than saturated fatty acids. Linolenic acid was the most predominant fatty acid in BC oil and extract, whereas behenic and arachidic acids were detected only in BC oil. Stearic acid was the main fatty acid in clove oil and extract, whereas oleic acid was the prevailing fatty acid in thyme extract.

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Effect of natural maize phytochemicals on Aspergillus section Flavi sclerotia characteristics under different conditions of growth media and water potential

Cited by 9 publications

References 56 publications

Effect of Treatment with Mold Inhibitors on Plant Growth of Corn and some Nutritional Components of Stored Grains, Infected with A. flavus and F. verticilloides

Effect of Treatment with Mold Inhibitors on Plant Growth of Corn and some Nutritional Components of Stored Grains, Infected with A. flavus and F. verticilloides

Effects of Phenolic Acids on the Growth and Production of T‐2 and HT‐2 Toxins by Fusarium langsethiae and F. sporotrichioides

Effect of some mould inhibitors and herbal plants on mycotoxins production byAspergillus flavusandFusarium verticilloidesin vitro and in stored corn grains

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