Aflatoxins and ochratoxin A in Brazilian paprika

Shundo, Luzia; Almeida, Adriana Palma de; Alaburda, Janete; Lamardo, Leda C.A.; Navas, Sandra Aparecida; Ruvieri, Valter; Sabino, Myrna

doi:10.1016/j.foodcont.2009.02.008

Cited by 64 publications

(29 citation statements)

References 11 publications

(16 reference statements)

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“…These results were similar to the ones obtained in a previous work on occurrence of OTA in peanuts (Magnoli et al 2006a). Shundo et al (2009) analyzed OTA contamination on paprika samples and the toxin levels were detected in 85.7 % of the samples at levels ranging from 0.24 to 97.20 ng/g. In summary, the natural occurrence of OTA in wines was not relevant in comparison to the other substrates evaluated in Latin American countries, but it could contribute to OTA exposure of human populations.…”

Section: Impact Of Ochratoxin a Production By Aspergillus Section Nigsupporting

confidence: 91%

“…The presence of OTA has been reported in a wide range of foods and beverages, in body fluids, and in kidneys of animals and humans (EFSA 2006). Natural occurrence of OTA in Latin America has been observed in coffee, wines, beers, grapes, dried grapes, species, cereals, and derivates destined for humans and animals (Iamanaka et al 2005;Taniwaki 2006;Chulze et al 2006;Magnoli et al 2006aMagnoli et al , 2007aKawashima et al 2007;Rosa et al 2009;Shundo et al 2009;Ponsone et al 2010;Vega et al 2012;Vanesa and Ana 2013). The maximum limits for OTA are regulated in many countries but not in Latin America countries.…”

Section: Introductionmentioning

confidence: 99%

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Aspergillus and Ochratoxin A in Latin America

Chiotta

Ponsone

Combina

et al. 2016

Microbes in Food and Health

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Species within Aspergillus section Nigri and section Circundati are important sources of ochratoxin A (OTA) contamination in several foods and beverages such as cereals, grapes, spices, peanut, cocoa, wine, beer, and coffee worldwide. Few surveys showed the epidemiology, ecology, and distribution of black aspergilli occurring in crops from different Latin American regions. Within section Nigri, Aspergillus niger aggregate species are commonly the most prevalent, followed by A. carbonarius and Aspergillus uniseriate. Aspergillus ochraceus is the most important ochratoxigenic species included in the section Circundati. These species differ in their OTA-producing ability, since the percentage OTA-producer strains and the levels produced are variable. The OTA levels detected in grains and fruits also were variable, and it was shown that their damage affected the incidence of ochratoxigenic species and OTA contamination. Temperature and water activity were also key factors determining the Aspergillus section Nigri colonization and OTA accumulation in different commodities. The knowledge of the factors affecting preharvest and post-harvest contamination of foods by black aspergilla and OTA production is essential to improve the quality and safety of foods. Different strategies can be used to reduce the impact of Aspergillus and OTA accumulation. Alternative strategies to the chemical control can be biocontrol or the use of natural substances such as antioxidants and essential oils. The data presented in this review provide relevant information for using appropriate management strategies to reduce or prevent the development of ochratoxigenic species and OTA accumulation on different commodities relevant for Latin America.

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Section: Impact Of Ochratoxin a Production By Aspergillus Section Nigsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Aspergillus and Ochratoxin A in Latin America

Chiotta

Ponsone

Combina

et al. 2016

Microbes in Food and Health

View full text Add to dashboard Cite

show abstract

“…In one of the few such studies, Shundo et al (2009) analyzed 70 red pepper samples in Brazil. They reported that OTA was found in 85.7% of these samples and that their concentrations ranged from 0.24 to 97.2 ng/g with a mean concentration of 7.0 ng/g.…”

Section: Ochratoxin Amentioning

confidence: 99%

Natural occurrence of aflatoxins and ochratoxin A in commercial dried chili

Jalili

Jinap

2012

Food Control

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“…First, the same food might be contaminated by more than one mycotoxin as the co-occurrence of AFB1 and OTA in edible products has been demonstrated; some examples are in dried fruits and figs [12], in paprika [13,14], and in breakfast cereals [15]. Moreover, since the human diet is varied, mycotoxins might reach humans from different pathways; and, finally, mycotoxins are thermostable and can remain in food even after the fungus has been removed [1].…”

Section: Introductionmentioning

confidence: 99%

Validation of a UHPLC-FLD analytical method for the simultaneous quantification of aflatoxin B1 and ochratoxin a in rat plasma, liver and kidney

Corcuera

Ibáñez-Vea

Vettorazzi

et al. 2011

Journal of Chromatography B

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addresses of all coauthors: Laura-Ana Corcuera: lcorcuer@alumni.unav.es, María Ibáñez-Vea: mivea@alumni.unav.es, Ariane Vettorazzi: avettora@alumni.unav.es, Adela López de Cerain: acerain@unav.es. 2 ABSTRACTA rapid and simple method for the simultaneous quantification of AFB1 and OTA in rat plasma, liver and kidney by UHPLC-FLD has been successfully validated according to the following criteria: selectivity, stability, linearity, precision, accuracy, recovery, robustness and limits of quantification and detection. The extraction method, calibration curves and chromatographic conditions are common for the three matrices. Plasma and homogenized tissue samples (100 µL) were extracted with acetonitrile-formic acid mixture (99:1) (300 µL). Chromatographic separation was performed with a mixture of water and acetonitrile:methanol (50:50), both acidified with 0.5% of formic acid using a gradient profile. The method avoids the use of immunoaffinity columns and allows reduction of sample and solvent volumes as well as toxic wastes. The detection is based on a photochemical reaction which enhances the AFB1 response without affecting the OTA signal before reaching the fluorescent detector. The mycotoxin recovery for each matrix was very efficient, between 93% and 96% for AFB1 and between 94% and 96% for OTA. For both mycotoxins the LOQs were 2 µg/L in plasma and 8 µg/kg in liver and kidney. The method has successfully been applied to rat samples after a single oral administration of a mixture of AFB1 and OTA and it could be a useful tool in toxicokinetic and toxicological studies.

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Aflatoxins and ochratoxin A in Brazilian paprika

Cited by 64 publications

References 11 publications

Aspergillus and Ochratoxin A in Latin America

Aspergillus and Ochratoxin A in Latin America

Natural occurrence of aflatoxins and ochratoxin A in commercial dried chili

Validation of a UHPLC-FLD analytical method for the simultaneous quantification of aflatoxin B1 and ochratoxin a in rat plasma, liver and kidney

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