scholarly journals Evaluation of Chitosan and Cellulosic Polymers as Binding Adsorbent Materials to Prevent Aflatoxin B1, Fumonisin B1, Ochratoxin, Trichothecene, Deoxynivalenol, and Zearalenone Mycotoxicoses Through an In Vitro Gastrointestinal Model for Poultry

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 529 ◽  
Author(s):  
Bruno Solís-Cruz ◽  
Daniel Hernández-Patlán ◽  
Eric Beyssac ◽  
Juan Latorre ◽  
Xochitl Hernandez-Velasco ◽  
...  
Keyword(s):  
Aflatoxin B1 ◽  
Fumonisin B1 ◽  
Cellulosic Polymers ◽  
Adsorbent Materials

In vitro studies of the effects of aflatoxin B1 and fumonisin B1 on trypsin-like and collagenase-like activity from the hepatopancreas of white shrimp (Litopenaeus vannamei)

Aquaculture ◽  
2005 ◽  
Vol 250 (1-2) ◽  
pp. 399-410 ◽  
Author(s):  
Armando Burgos-Hernández ◽  
Sergio I. Farias ◽  
Wilfrido Torres-Arreola ◽  
Josafat M. Ezquerra-Brauer
Keyword(s):  
Aflatoxin B1 ◽  
Litopenaeus Vannamei ◽  
Fumonisin B1 ◽  
In Vitro Studies ◽  
White Shrimp

An in vitro study of alkaline phosphatase sensitivity to mixture of aflatoxin B1 and fumonisin B1 in the hepatopancreas of coastal lagoon wild and farmed shrimp Litopenaeus vannamei

2016 ◽  
Vol 32 (3) ◽  
pp. 117-125 ◽  
Author(s):  
Jesús A. Pérez-Acosta ◽  
Armando Burgos-Hernandez ◽  
Carlos A. Velázquez-Contreras ◽  
Enrique Márquez-Ríos ◽  
Wilfrido Torres-Arreola ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Aflatoxin B1 ◽  
Coastal Lagoon ◽  
Litopenaeus Vannamei ◽  
Fumonisin B1 ◽  
In Vitro Study ◽  
Vitro Study

scholarly journals Impacts of Climate Change Interacting Abiotic Factors on Growth, aflD and aflR Gene Expression and Aflatoxin B1 Production by Aspergillus flavus Strains In Vitro and on Pistachio Nuts

Toxins ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 385
Author(s):  
Alaa Baazeem ◽  
Alicia Rodriguez ◽  
Angel Medina ◽  
Naresh Magan
Keyword(s):  
Climate Change ◽  
Gene Expression ◽  
Water Stress ◽  
Aspergillus Flavus ◽  
Aflatoxin B1 ◽  
Abiotic Factors ◽  
Pistachio Nuts ◽  
Significant Difference ◽  
Spoilage Fungi

Pistachio nuts are an important economic tree nut crop which is used directly or processed for many food-related activities. They can become colonized by mycotoxigenic spoilage fungi, especially Aspergillus flavus, mainly resulting in contamination with aflatoxins (AFs), especially aflatoxin B1 (AFB1). The prevailing climate in which these crops are grown changes as temperature and atmospheric CO2 levels increase, and episodes of extreme wet/dry cycles occur due to human industrial activity. The objectives of this study were to evaluate the effect of interacting Climate Change (CC)-related abiotic factors of temperature (35 vs. 37 °C), CO2 (400 vs. 1000 ppm), and water stress (0.98–0.93 water activity, aw) on (a) growth (b) aflD and aflR biosynthetic gene expression and (c) AFB1 production by two strains A. flavus (AB3, AB10) in vitro on milled pistachio-based media and when colonizing layers of shelled raw pistachio nuts. The A. flavus strains were resilient in terms of growth on pistachio-based media and the colonisation of pistachio nuts with no significant difference when exposed to the interacting three-way climate-related abiotic factors. However, in vitro studies showed that AFB1 production was significantly stimulated (p < 0.05), especially when exposed to 1000 ppm CO2 at 0.98–0.95 aw and 35 °C, and sometimes in the 37 °C treatment group at 0.98 aw. The relative expression of the structural aflD gene involved in AFB1 biosynthesis was decreased or only slightly increased, relative to the control conditions at elevated CO, regardless of the aw level examined. For the regulatory aflR gene expression, there was a significant (p < 0.05) increase in 1000 ppm CO2 and 37 °C for both strains, especially at 0.95 aw. The in situ colonization of pistachio nuts resulted in a significant (p < 0.05) stimulation of AFB1 production at 35 °C and 1000 ppm CO2 for both strains, especially at 0.98 aw. At 37 °C, AFB1 production was either decreased, in strain AB3, or remained similar, as in strain AB10, when exposed to 1000 ppm CO2. This suggests that CC factors may have a differential effect, depending on the interacting conditions of temperature, exposure to CO2 and the level of water stress on AFB1 production.

scholarly journals Measures against aflatoxin B1: a brief review about the use of flavonoids and clays

Biotemas ◽  
2017 ◽  
Vol 30 (1) ◽  
pp. 1
Author(s):  
Janaína Nones ◽  
Humberto Gracher Riella ◽  
Jader Nones
Keyword(s):  
Aflatoxin B1

http://dx.doi.org/10.5007/2175-7925.2017v30n1p1A aflatoxina B1 (AFB1) é uma das micotoxinas mais abundantes e tóxicas produzidas por cepas toxigênicas. Esta substância afeta a viabilidade celular, sendo capaz de induzir a morte, tanto de células humanas, quanto de células animais. Medidas vêm sendo adotadas para minimizar os danos causados pela AFB1, incluindo a utilização de flavonoides (compostos polifenólicos extraídos de plantas) e bentonitas (um tipo de argila). Nesta revisão, as características físico-químicas da AFB1 e seus efeitos em diferentes tipos de células, in vitro e in vivo, foram abordados. Além disso, a capacidade de proteção celular a partir de substâncias e materiais naturais, tais como flavonoides e bentonita, foi brevemente descrita. Também relatamos os efeitos econômicos causados pelas micotoxinas e sugerimos alternativas (flavonoides e bentonita) para novas abordagens terapêuticas visando combater a toxicidade causada por estas substâncias (AFB1).

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