Localization of zearalenone detoxification gene(s) in pZEA-1 plasmid of Pseudomonas putida ZEA-1 and expressed in Escherichia coli

Altalhi, Abdulla; El-Deeb, Bahig

doi:10.1016/j.jhazmat.2008.04.068

Cited by 58 publications

(25 citation statements)

References 22 publications

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“…The highest degradation of 75% ZEN was attained at pH 8 while the lowest was 33% at pH 3. This optimum pH for ZEN degradation was in agreement with results obtained by Altalhi and El-Deeb (2009). They reported optimum ZEN degradation by Pseudomonas putida ZEA-1 in the pH range 7-8 with minimal degradation in acidic and alkaline pH regions of 5 and 10 respectively.…”

Section: Discussionsupporting

confidence: 91%

“…All this was an indication of a heat labile culture extract. Previous studies on ZEN degradation have reported an optimum temperature of 37°C after which activity was rapidly lost at 50°C (Takahashi-Ando et al 2004;Altalhi and El-Deeb 2009). The optimum of 42°C in this case implies that the culture extract can be utilised at a relatively higher temperature.…”

Section: Discussionmentioning

confidence: 64%

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Adsorption and degradation of zearalenone by bacillus strains

Tinyiro

Wokadala

et al. 2011

Folia Microbiol

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Two Bacillus strains; Bacillus subtilis 168 and Bacillus natto CICC 24640 separately adsorbed and degraded zearalenone in liquid media, in vitro. Viable, autoclaved (121°C, 20 min) and acid-treated cells of both strains separately bound more than 55% of zearalenone (ZEN, 20 μg/L) after 30 min and 1-h incubation at 37°C under aerobic conditions, and the amount of ZEN adsorbed was dependent on initial cell volume. In addition, ZEN was degraded by the culture extract of both strains. Degradation by B. subtilis 168 and B. natto CICC 24640 culture extract after 24-h aerobic incubation at 30°C was 81% and 100%, respectively. B. natto CICC 24640 culture extract comprehensively degraded ZEN and, for both strains, no oestrogenic ZEN analogues were present. ZEN degradation was accompanied by carbondioxide emission indicating a decarboxylation reaction. ZEN degradation by the salient B. natto CICC 24640 culture extract varied with initial ZEN concentration, incubation time, temperature and pH. Degradation was enhanced by Mn(2+), Zn(2+), Ca(2+) and Mg(2+) but impeded by Hg(2+), Cu(2+), Pb(2+), ethylenediaminetetraacetic acid and 1,10-phenanthroline. The degradation reaction is associated with a metalloproteinase of molar mass in the range 31-43 kDa. Overall, the two generally recognised as safe Bacillus strains can, potentially, be utilised for detoxification of zearalenone in food.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 64%

Adsorption and degradation of zearalenone by bacillus strains

Tinyiro

Wokadala

et al. 2011

Folia Microbiol

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“…Some microorganism such as Rhodococcus erythropolis [72], Armillariella tabescens [73] and Myxococcus fulvus [16] have been suggested to have diferent AF-degrading ability. Rhizopus oryzae [74], Bacillus licheniformis [75] and Pseudomonas sp [76] were searched for their abilities to degrade ZEA. Some studies found that B. subtilis had protective efects against alatoxicosis in layers and broilers fed naturally AF-contaminated diets and also healed ZEA toxicosis in pre-pubertal gilts when fed diets including ZEA.…”

Section: Prevention and Controlmentioning

confidence: 99%

Mycotoxins in Poultry

Filazı¹,

Yurdakök-Dikmen²,

Kuzukiran³

et al. 2017

Poultry Science

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Mycotoxins, the toxic secondary metabolites of fungi, particularly produced by many species of Aspergillus, Fusarium and Penicillium, have afected animal and human health for over thousand years, whereas litle has been discovered so far about these complex substances in poultry, which are generally very sensitive. Even though it varies by species and sex, some common efects are reduced feed intake, weight gain, feed eiciency, growth performance, immunity and hatchability along with increased mortality, organ damages (mainly kidney and liver), carcinogenicity, teratogenicity and decreased egg production. Besides their adverse health efects and the decrease in production rate, concerns over their importance in public health is still under debate. Decontamination approaches to reduce mycotoxins in feed are technologically diverse and based on chemical, biological and physical strategies. Chemical remediation strategies involve the conversion of mycotoxins via chemical reactions. Biological strategies involve various substances such as plant ingredients, enzymes and microorganisms. Physical processes include sorting, milling, dehulling, cleaning, heating, irradiation or combinational approaches. New strategies for the prevention and treatment of mycotoxicosis, including beneicial microorganisms/products, along with alternative treatments, including plant extracts/essential oils, are current hot topics in the poultry industry.

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“…The thiol functionalized material is effective at decontaminating apple juice at levels of concern (0.1 g ml −1 ) to below regulated levels (0.05 g ml −1 ). Overall, the SBA-15-PSH possesses high capacity for patulin and approaches the efficiency (24 h) and pH tolerance of biological methods to reduce mycotoxins, such as zearalenone detoxification by expression of the pZEA-1 plasmid in Escherichia coli [34].…”

Section: Modeling Of Sba-15 and Propylthiol Functionalized Sba-15mentioning

confidence: 99%