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1.
Food Res Int ; 187: 114304, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38763623

RESUMO

This study evaluated muti-mycotoxins in 199 samples including processed infant foods and raw materials collected randomly from an infant food company and assessed their role in dietary exposure in infants and young children via probabilistic risk assessment. Approximately 79.6 % (74/93) of the processed infant foods and 65.1 % (69/106) of the raw materials were contaminated by mycotoxins, with a mean occurrence level of 3.66-321.8 µg/kg. Deoxynivalenol (DON) and tenuazonic acid (TeA) were the more prevalent mycotoxins detected, based on their higher frequencies and levels across samples. Co-occurrence of more than two mycotoxins was detected in 61.3 % (57/93) of the processed infant foods and 53.8 % (57/106) of the raw materials. Wheat flour and derived products (e.g., infant noodles and infant biscuits) were contaminated with higher contamination levels and a greater variety of mycotoxins than other samples (e.g., infant cereal and rice grains). The estimated daily exposure to OTA, DON, ZEN, and TEN was lower than the corresponding reference health-based guidance values, indicating acceptable health risks. However, the estimated dietary exposure to alternariol monomethyl ether (AME), alternariol (AOH), and tenuazonic acid (TeA) exceeded the corresponding thresholds of toxicological concern values, indicating potential dietary intake risks. Among the various samples, cereals and cereal-based infant foods emerged as the primary contributors to mycotoxin exposure. Further research is advised to address the uncertainties surrounding the toxicity associated with emerging Alternaria mycotoxins and to conduct cumulative risk assessments concerning multiple mycotoxin exposure in infants and young children.


Assuntos
Exposição Dietética , Contaminação de Alimentos , Alimentos Infantis , Micotoxinas , Micotoxinas/análise , Medição de Risco , Alimentos Infantis/análise , Humanos , Contaminação de Alimentos/análise , Lactente , China , Exposição Dietética/análise , Exposição Dietética/efeitos adversos , Grão Comestível/química , Grão Comestível/microbiologia , Farinha/análise , Tricotecenos/análise , Microbiologia de Alimentos
2.
Mycotoxin Res ; 40(3): 369-387, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38671221

RESUMO

DON and ZEN residues in the blood and urine of dairy cows can be used to predict the outer exposure to DON and ZEN expressed per kilogram diet for a risk evaluation based on comparisons to critical dietary concentrations. This method was used to evaluate the exposure of dairy cows from 12 farms located in Brandenburg, Germany, fed rations with unknown DON and ZEN concentrations (N = 244). The corresponding diet concentrations predicted by different methods from analyzed blood and urine samples varied significantly amongst farms from 0 to 1.6 mg/kg for DON and 0 to 3.0 mg/kg for ZEN at a reference dry matter content of 88% but independently of lactational state (post-partum vs. early lactation). This significant variation was noticed below the critical dietary DON concentration of 5 mg/kg, while the ZEN concentration in one farm exceeded the critical ZEN level of 0.5 mg/kg markedly. Predicted DON concentrations of rations increased with the proportion of maize silage, while the high ZEN concentration found in one farm was most likely related to a higher proportion of sugar beet pulp supposedly highly contaminated by ZEN. Exceeding the critical dietary ZEN concentration and significant variations in DON contents below the critical level was not related to performance, reproductive performance, and health-related traits of cows. For a more consistent evaluation of possible associations between the inner exposure of cows to DON and ZEN, more frequent longitudinal observations of both mycotoxin residue levels and performance and health traits are required.


Assuntos
Tricotecenos , Zearalenona , Bovinos , Animais , Tricotecenos/urina , Tricotecenos/sangue , Tricotecenos/análise , Zearalenona/análise , Zearalenona/urina , Zearalenona/sangue , Medição de Risco , Feminino , Alemanha , Ração Animal/análise , Dieta/veterinária , Indústria de Laticínios , Urina/química
3.
Food Addit Contam Part B Surveill ; 17(2): 101-109, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38234288

RESUMO

This study aimed to estimate the dietary exposure towards mycotoxins of residents in Gansu province, China, from 2014-2020 through surveillance data on mycotoxins in grains and grain products. Fumonisin B1 (FB1), Deoxynivalenol (DON), 3- and 15-Acetyl-deoxynivalenol (3-ADON and 15-ADON), Tentoxin (TEN), Tenuazonic acid (TeA) and Zearalenone (ZEN) in 863 grains and grain products were detected by HPLC-MS and UPLC-MS. DON was the most detected mycotoxin of all samples. For women, the average dietary exposure to DON was 1.49 µg/kg bw/day, with 55.8% of the individuals eating dried noodles exceeding tolerable daily intake. The hazard quotient values were 1.24-12.60, so greater than 1 for DON at the average, 90th percentile, 95th percentile, and maximum levels: 44.6% of the HQ values for men and 45.7% for women were greater than 1.


Assuntos
Exposição Dietética , Grão Comestível , Contaminação de Alimentos , Micotoxinas , China , Micotoxinas/análise , Humanos , Contaminação de Alimentos/análise , Medição de Risco , Feminino , Grão Comestível/química , Masculino , Exposição Dietética/análise , Adulto , Criança , Adulto Jovem , Adolescente , Pré-Escolar , Cromatografia Líquida de Alta Pressão , Pessoa de Meia-Idade , Tricotecenos/análise , Lactente
4.
Toxins (Basel) ; 15(10)2023 10 16.
Artigo em Inglês | MEDLINE | ID: mdl-37888646

RESUMO

Wheat-based products are largely consumed by children worldwide. Deoxynivalenol (DON) is known for its acute and chronic toxicity and is the most common contaminant of cereal grains. Since no legal limits are set for DON in wheat-based products and specific foods intended for children over 3 years on the market, a high risk of overexposure to this contaminant may emerge. The main objective of the study, conducted in 2018-2019, was to produce a wheat flour intended for children over three years, characterized by a high level of safety in terms of DON content, to be used to produce wheat-derived products. The dedicated flour was produced by adopting tailored procedures like the selection of wheat suppliers, the predetermination of the safe contamination of DON in the final products, and the evaluation of the transfer rate from the wheat flour to derived products (bread, breadsticks, biscuits, plumcake, and focaccia). The results showed that the daily exposure of children was considered to be safe, in a range between 7% (biscuits) and 67% (bread) of DON tolerable daily intake (TDI) and that only by producing a flour characterized by DON levels much lower than those in force, can "safe" products be marketed.


Assuntos
Farinha , Tricotecenos , Humanos , Criança , Farinha/análise , Triticum , Contaminação de Alimentos/análise , Tricotecenos/análise
5.
Toxins (Basel) ; 14(9)2022 08 25.
Artigo em Inglês | MEDLINE | ID: mdl-36136524

RESUMO

Deoxynivalenol (DON) together with its acetylated derivatives cause detrimental effects on human health, and the purpose of this study was to assess the prevalence of DON and its acetylated derivatives from grains and grain products in Zhejiang province, China, and to assess the risk of DON and its acetylated derivatives due to multiple consumptions of grains and grain products among the Zhejiang population. Food samples numbering 713 were collected, and the LC-MS/MS method was used to determine the toxins. The levels of toxins from grains and grain products were relatively low: DON was the toxin at the highest levels. The food frequency questionnaire was used to collect food consumption data. The result of exposure assessments showed that the population was overall at low levels of toxin exposure. The probable mean group daily intake of toxins was 0.21 µg/kg bw/day, which was far from the group provisional maximum tolerable daily intake of 1 µg/kg bw/day, but 0.71% of participants were at high exposure levels. Rice and dried noodles (wheat-based food) were the main sources of toxin exposure, and reducing the consumption of rice and dried noodles while consuming more of other foods with lower levels of toxins is recommended.


Assuntos
Oryza , Tricotecenos , China , Cromatografia Líquida/métodos , Grão Comestível/química , Contaminação de Alimentos/análise , Humanos , Espectrometria de Massas em Tandem/métodos , Tricotecenos/análise
6.
Toxins (Basel) ; 14(8)2022 07 25.
Artigo em Inglês | MEDLINE | ID: mdl-35893751

RESUMO

Deoxynivalenol (DON) and emerging Alternaria toxins often co-occur in cereal-based products, but the current risk assessment is commonly conducted for only one type of mycotoxin at a time. Compared to adults, infants and young children are more susceptible to mycotoxins through food consumption, especially with cereal-based food products which are the main source of exposure. This study aimed to perform a probabilistic risk assessment of combined exposure to DON and three major Alternaria toxins, namely including alternariol monomethyl ether (AME), alternariol (AOH), and tenuazonic acid (TeA) through consumption of cereal-based foods for Chinese infants and young children. A total of 872 cereal-based food products were randomly collected and tested for the occurrence of DON and three major Alternaria toxins. The results on mycotoxin occurrence showed the DON, TeA, AOH, and AME was detected in 56.4%, 47.5%, 7.5%, and 5.7% of the samples, respectively. Co-contamination of various mycotoxins was observed in 39.9% of the analyzed samples. A preliminary cumulative risk assessment using the models of hazard index (HI) and combined margin of exposure (MoET) was performed on DON and Alternaria toxins that were present in cereal-based food products for infants and young children in China for the first time. The results showed that only 0.2% and 1.5%, respectively, of individuals exceeded the corresponding reference value for DON and TeA, indicating a low health risk. However, in the case of AME and AOH, the proportion of individuals exceeding the reference value was 24.1% and 33.5%, respectively, indicating the potential health risks. In the cumulative risk assessment of AME and AOH, both HI and MoET values indicated a more serious risk than that related to individual exposure. Further research is necessary to reduce the uncertainties that are associated with the toxicities of the Alternaria toxins and cumulative risk assessment methods.


Assuntos
Alternaria , Grão Comestível , Contaminação de Alimentos , Tricotecenos , Alternaria/isolamento & purificação , Pré-Escolar , China , Grão Comestível/química , Grão Comestível/microbiologia , Contaminação de Alimentos/análise , Humanos , Lactente , Lactonas/análise , Micotoxinas/análise , Medição de Risco , Ácido Tenuazônico/análise , Tricotecenos/análise
7.
Food Addit Contam Part B Surveill ; 14(2): 151-161, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34114946

RESUMO

The goal of this survey was to evaluate the presence and concentration as well as the co-occurrence of legislated and non-legislated mycotoxins in wheat flour samples from Brazil. A total of 200 wheat flour samples were analysed by a validated multi-mycotoxins method. DON was the mycotoxin with the highest occurrence, being present in 100% of the analysed samples and showing contamination in both years and regions (53-2905 µg kg-1). ZEN was detected in 51% (

Assuntos
Micotoxinas , Tricotecenos , Brasil , Farinha/análise , Contaminação de Alimentos/análise , Micotoxinas/análise , Tricotecenos/análise , Triticum
8.
Toxins (Basel) ; 13(5)2021 04 22.
Artigo em Inglês | MEDLINE | ID: mdl-33921990

RESUMO

This study investigated the natural incidence of deoxynivalenol (DON) in corn and corn products from corn-producing districts of Punjab, Pakistan. The analysis was carried out using high performance liquid chromatography (HPLC) with UV detector and immunoaffinity cleanup columns. The detection limit (LOD) and limit of quantification were 25 and 50 µg/kg, respectively. A total of 1220 samples of corn and corn products were analyzed to detect DON, and 539 (44.2%) samples were observed to be contaminated with DON (n ≥ LOD). Furthermore, 92 (7.5%) samples of corn and corn products had DON levels that were higher than the proposed limits of the EU. The data are significantly different from a normal distribution of DON in samples of corn and corn products from different locations (p < 0.05) for Shapiro-Wilk and Kolmogorov-Smirnov values. However, a significant difference in DON levels was found between corn and corn-derived products (p ≤ 0.05). The lowest and highest exposures, and hazard quotient (HQ) values of 0.92 and 9.68 µg/kg bw/day, were documented in corn flour samples.


Assuntos
Contaminação de Alimentos/análise , Tricotecenos/análise , Zea mays/química , Cromatografia Líquida de Alta Pressão , Contaminação de Alimentos/estatística & dados numéricos , Índia , Paquistão , Medição de Risco
9.
Bioelectrochemistry ; 139: 107743, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33524655

RESUMO

A "honeycomb" electrochemical biosensor based on 3D printing was developed to noninvasively monitor the viability of 3D cells and evaluate the individual or combined toxicity of deoxynivalenol (DON), 3-acetyldeoxynivalenol (3-ADON), and 15-acetyldeoxynivalenol (15-ADON). Carbon nanofiber (CN)/gelatin methacryloyl (GelMA) conductive composite hydrogel with strong processability was printed on 8-channel screen-printed carbon electrodes (SPCEs) to maintain cell viability and form tight cell-to-cell contacts. A "3D honeycomb" printing infill pattern was selected in the construction of the biosensors to improve conductivity. Based on 3D printing technology, the electrochemical biosensor can prevent manual error and provide for high-throughput detection. Electrochemical impedance spectroscopy (EIS) was used to evaluate mycotoxin toxicity. The EIS response decreased with the concentration of DON, 3-ADON and 15-ADON in the range of 0.1-10, 0.05-100, and 0.1-10 µg/mL, respectively, with a limit of detection of 0.07, 0.10 and 0.06 µg/mL, respectively. Mycotoxin interactions were analyzed using the isobologram-combination index (CI) method. The electrochemical cytotoxicity evaluation result was confirmed by biological assays. Therefore, a novel method for evaluating the combined toxicity of mycotoxins is proposed, which exhibits potential for application to food safety and evaluation.


Assuntos
Técnicas Biossensoriais/métodos , Técnicas Eletroquímicas/métodos , Venenos/análise , Tricotecenos/análise , Células A549 , Carbono/química , Sobrevivência Celular , Eletrodos , Gelatina/química , Humanos , Hidrogéis/química , Nanofibras/química , Impressão Tridimensional , Espécies Reativas de Oxigênio/análise
10.
Toxins (Basel) ; 12(10)2020 10 06.
Artigo em Inglês | MEDLINE | ID: mdl-33036310

RESUMO

Fumonisins (FB1+FB2) and deoxynivalenol (DON) are mycotoxins produced by Fusarium species that might be present in maize and maize products. Knowledge on their occurrence in nixtamalized maize from Mexico together with an accompanying risk assessment are scarce, while nixtamalized maize is an important food in Mexico. This study presents the occurrence of FB1 + FB2 and DON in nixtamalized maize samples collected in Mexico City and analyses their distribution and resulting estimated daily intake for Mexican consumers by a probabilistic approach using a two-dimensional Monte-Carlo simulation. The results obtained reveal that for FB1 + FB2, 47% of the Mexican men and 30% of the Mexican women might exceed the provisional tolerable daily intake (PMTDI) of 2 µg/kg bw/day for fumonisins and for DON, 9% of men and 5% of women would be exceeding the PMTDI of 1 µg/kg bw/day, corresponding to the high consumers. The results raise a flag for risk managers in Mexico, to consider regulations and interventions that lower mycotoxin levels in nixtamalized maize for human consumption.


Assuntos
Manipulação de Alimentos , Microbiologia de Alimentos , Fumonisinas/análise , Fusarium/metabolismo , Tricotecenos/análise , Zea mays/microbiologia , Cromatografia Líquida , Simulação por Computador , Qualidade de Produtos para o Consumidor , Feminino , Fumonisinas/efeitos adversos , Humanos , Masculino , México , Método de Monte Carlo , Recomendações Nutricionais , Medição de Risco , Espectrometria de Massas por Ionização por Electrospray , Espectrometria de Massas em Tandem , Tricotecenos/efeitos adversos
11.
Mycotoxin Res ; 36(4): 419-427, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32829468

RESUMO

Deoxynivalenol (DON) is one of the most commonly found mycotoxins across the world, and it mainly contaminates staple food crops. This study aims to evaluate the dietary exposure of DON and to provide a geographical profile of DON exposure in China. The concentrations of DON and its acetylated derivatives in 15,004 cereal samples (10,192 wheat flour, 1750 maize meal, 892 oat flakes, and 2170 polished rice) were collected from 30 provinces, autonomous regions, or municipalities across China during 2010-2017, through a national food safety risk surveillance system. The consumption data for cereals were obtained from China National Nutrition and Health Survey in 2002, and 67,923 respondents from the same 30 regions were included in the analysis. Among all the cereals considered, the concentration was the highest in wheat flour, with the mean concentration of 250.8 µg/kg. Applying a worst-case scenario, some individuals were possibly at risk, but the probability of acute effects was low. The mean and median exposure for the entire population was 0.61 and 0.36 µg/kg bw/day, respectively, below the (PM) TDI, indicating an acceptable overall health risk in Chinese population. Wheat contributed to 86% of the total DON exposure. Significant discrepancy was observed between the exposure and the contamination of DON. The high-exposure cluster area was in northern China, whilst the most seriously contaminated regions were all located in the southeast, which formed a seriously contaminated area.


Assuntos
Exposição Ambiental/análise , Contaminação de Alimentos/análise , Micotoxinas/análise , Tricotecenos/análise , Acetilação , Adolescente , Adulto , Criança , Pré-Escolar , China , Exposição Dietética/análise , Grão Comestível , Análise de Perigos e Pontos Críticos de Controle , Humanos , Limite de Detecção , Pessoa de Meia-Idade , Vigilância da População , Vigilância em Saúde Pública , Medição de Risco , Tricotecenos/química , Adulto Jovem
12.
Artigo em Inglês | MEDLINE | ID: mdl-32756472

RESUMO

The main goal of the present research was to explore the seasonal variation of deoxynivalenol (DON) in wheat, corn, and their products, collected during 2018-2019. Samples of 449 of wheat and products and 270 samples of corn and their products were examined using reverse-phase liquid chromatography with a UV detector. The findings of the present work showed that 104 (44.8%) samples of wheat and products from the summer season, and 91 (41.9%) samples from winter season were contaminated with DON (concentration limit of detections (LOD) to 2145 µg/kg and LOD to 2050 µg/kg), from summer and winter seasons, respectively. In corn and products, 87 (61.2%) samples from summer and 57 (44.5%) samples from winter season were polluted with DON with levels ranging from LOD to 2967 µg/kg and LOD to 2490 µg/kg, from the summer and winter season, respectively. The highest dietary intake of DON was determined in wheat flour 8.84 µg/kg body weight/day from the summer season, and 7.21 µg/kg body weight/day from the winter season. The findings of the work argued the need to implement stringent guidelines and create awareness among farmers, stakeholders, and traders of the harmful effect of DON. It is mostly observed that cereal crops are transported and stockpiled in jute bags, which may absorb moisture from the environment and produce favorable conditions for fungal growth. Therefore, these crops must store in polyethylene bags during transportation and storage, and moisture should be controlled. It is highly desirable to use those varieties that are more resistant to fungi attack. Humidity and moisture levels need to be controlled during storage and transportation.


Assuntos
Tricotecenos , Triticum , Zea mays , Grão Comestível , Farinha/análise , Contaminação de Alimentos/análise , Tricotecenos/análise , Triticum/química , Zea mays/química
13.
Food Chem Toxicol ; 140: 111304, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32224216

RESUMO

This study aims to estimate dietary exposure to deoxynivalenol and fumonisins (FBs) of infants and toddlers in Turkey. A total of 75 processed cereal-based foods intended for infants and toddlers collected between July and October 2018, were analysed by high performance liquid chromatography (HPLC). DON was determined in 21.3% of samples with mean middle bound (MB) level of 28.4 µg/kg. Of the 16 quantifiable samples, only one showed values above 200 µg/kg. Fumonisin B1 (FB1) was detected at quantifiable levels only in three samples, while FB2 was not found in any sample. Estimated mean MB chronic dietary exposures to DON in infants and toddlers were 0.161 and 0.118 µg/kg b.w. per day, while 95th percentile (P95) MB exposures to DON were estimated at 0.564 and 0.414 µg/kg b.w. per day, respectively. Mean MB dietary exposures to FBs for infants and toddlers, respectively, were 0.093 and 0.068 µg/kg b.w. per day; P95 exposure estimates were 0.079 and 0.058 µg/kg b.w. per day. Both for DON and FBs, mean and P95 exposures of infants and toddlers did not exceeded the threshold level of 1 µg/kg b.w. per day and are therefore not of health concern.


Assuntos
Exposição Dietética , Grão Comestível/química , Contaminação de Alimentos/análise , Fumonisinas/toxicidade , Alimentos Infantis/análise , Tricotecenos/toxicidade , Pré-Escolar , Cromatografia Líquida de Alta Pressão , Fumonisinas/análise , Fumonisinas/normas , Humanos , Lactente , Limite de Detecção , Padrões de Referência , Reprodutibilidade dos Testes , Medição de Risco , Tricotecenos/análise , Tricotecenos/normas , Turquia
14.
Toxins (Basel) ; 12(3)2020 03 19.
Artigo em Inglês | MEDLINE | ID: mdl-32204439

RESUMO

A survey on 120 cereal samples (barley, maize, rice and wheat) from Algerian markets has been carried out to evaluate the presence of 15 mycotoxins (ochratoxin A, deoxynivalenol, fumonisin B1 and B2, T-2 and HT-2 toxins, zearalenone, fusarenon X, citrinin, sterigmatocystin, enniatins A, A1, B and B1, and beauvericin). With this purpose, a QuEChERS-based extraction and ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) were used. Analytical results showed that 78 cereal samples (65%) were contaminated with at least one toxin, while 50% were contaminated with three to nine mycotoxins. T-2 toxin, citrinin, beauvericin and deoxynivalenol were the most commonly found mycotoxins (frequency of 50%, 41.6%, 40.8% and 33.3%, respectively). Fumonisins (B1 + B2), enniatins B and B1, deoxynivalenol and zearalenone registered high concentrations (289-48878 µg/kg, 1.2-5288 µg/kg, 15-4569 µg/kg, 48-2055 µg/kg and 10.4-579 µg/kg, respectively). Furthermore, concentrations higher than those allowed by the European Union (EU) were observed in 21, 8 and 1 samples for fumonisins, zearalenone and deoxinivalenol, respectively. As a conclusion, the high levels of fumonisins (B1 + B2) in maize and deoxynivalenol, zearalenone and HT-2 + T-2 toxins in wheat, represent a health risk for the average adult consumer in Algeria. These results pointed out the necessity of a consistent control and the definition of maximum allowed levels for mycotoxins in Algerian foodstuffs.


Assuntos
Exposição Dietética/análise , Grão Comestível/química , Contaminação de Alimentos/análise , Fumonisinas/análise , Tricotecenos/análise , Zearalenona/análise , Argélia , Cromatografia Líquida de Alta Pressão , Grão Comestível/normas , Humanos , Limite de Detecção , Concentração Máxima Permitida , Reprodutibilidade dos Testes , Medição de Risco , Espectrometria de Massas em Tandem , Triticum/química , Zea mays/química
15.
Mycotoxin Res ; 36(1): 41-62, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31346981

RESUMO

Mycotoxins are difficult to monitor continuously, and a tool to assess the risk would help to judge if there is a particular risk due to the inclusion of certain feed ingredients. For this, the toxin contents of 97 commercial fish feeds have been estimated, and the most prominent toxins in fish feed are calculated to be deoxynivalenol, zearalenone, fumonisins and enniatins. These pose a risk to fish well-being, as can be calculated by the Bayesian models for determining the critical concentrations 5% (CC5) for the different toxins. Besides fishmeal, wheat, soybean products and corn are regularly used as fish feed ingredients. The calculated scenarios show that fish are at high risk of toxin contamination if feed ingredients of low quality are chosen for feed production. Due to this, specific maximum allowable levels for several mycotoxins in fish feeds should be established.


Assuntos
Ração Animal/análise , Contaminação de Alimentos , Micotoxinas/análise , Medição de Risco , Animais , Aquicultura , Aspergillus/metabolismo , Peixes , Fumonisinas/análise , Fumonisinas/toxicidade , Fusarium/metabolismo , Micotoxinas/toxicidade , Ocratoxinas/análise , Ocratoxinas/toxicidade , Penicillium/metabolismo , Tricotecenos/análise , Tricotecenos/toxicidade , Triticum/microbiologia , Zea mays/microbiologia , Zearalenona/análise , Zearalenona/toxicidade
16.
Crit Rev Food Sci Nutr ; 60(8): 1346-1374, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-30761910

RESUMO

Preventing food from fungal infestation has become a cause of great concern as food safety is of particular importance to public health globally. Recently International Agency for Research on Cancer (IARC) and the World Health Organization (WHO) in its 2016 press release has urged to take action against widespread mycotoxin contamination in developing countries. Deoxynivalenol (DON) is a group B trichothecene mycotoxin, produced by common field pathogens such as Fusarium graminearum and Fusarium culmorum, and reported to be the predominant contaminant of food commodities. At present, no detailed/systematic review regarding the global occurrence of DON in various food and grain samples is available in the literature. Considering DON's cosmopolitan behavior and toxicological manifestations, the present review summarizes the region-wise reports and surveys conducted across the globe during the last decade, on the occurrence of DON in the food commodities intended for human consumption. Studies conducted on DON metabolites either in food, urine or blood samples from humans have also been reviewed. The present review indicates that the current exposure levels of DON might pose a health risk for the consumers, especially in growing children, necessitating to take vigilant steps to guarantee food safety.


Assuntos
Contaminação de Alimentos/análise , Inquéritos e Questionários , Tricotecenos/análise , Humanos , Micotoxinas/análise , Medição de Risco
17.
Artigo em Inglês | MEDLINE | ID: mdl-31810432

RESUMO

Risks based on cancer and non-cancer endpoints, to Iranians from exposure to several mycotoxins (aflatoxin B1, ochratoxin, deoxynivalenol and T-2 toxin) following consumption of rice were evaluated. Point estimates of hazard were made for each mycotoxin and a hazard index (HI) and probabilistic estimates were based on results of Monte Carlo Simulations (MCS). All known 17 peer-reviewed studies, published in databases included in Science Direct, PubMed, Scopus and Web of Science, as well as grey literature published in Google Scholar from 2008 to 2017 were considered. The 95th and 50th centiles of Hazard Index (HI) in Iranians due to ingestion of rice were estimated to be 2.5 and 0.5, respectively. The 95th and 50th centiles of people with positive surface antigens for hepatitis B (HBsAg+) risk characterisation for AFB1 in Iranian consumers of rice were 81 and 79.1, respectively. The 95th and 50th centiles for risks of Iranians negative for the surface antigen of hepatitis B HBsAg (HBsAg-) were 4.4 and 2.6, respectively. Based on results of the MCS for risks to cancer effects, the 95th and 50th centiles of margins of exposure (MOE) were 233 and 231, respectively. Therefore, it is recommended to update agricultural approaches and storage methods and implement monitoring and regulations based on risks to health posed by consumption of rice by the Iranian population.


Assuntos
Exposição Dietética , Contaminação de Alimentos/análise , Micotoxinas/análise , Oryza/química , Aflatoxina B1/análise , Humanos , Irã (Geográfico) , Ocratoxinas/análise , Medição de Risco , Toxina T-2/análise , Tricotecenos/análise
18.
Toxins (Basel) ; 11(12)2019 12 09.
Artigo em Inglês | MEDLINE | ID: mdl-31835298

RESUMO

Eighty-seven samples of malt from several Polish malting plants and 157 beer samples from the beer available on the Polish market (in 2018) were tested for Fusarium mycotoxins (deoxynivalenol (DON), nivalenol (NIV)), and their modified forms ((deoxynivalenol-3-glucoside (DON-3G), nivalenol-3-glucoside (NIV-3G), 3-acetyldeoxynivalenol (3-AcDON)). DON and its metabolite, DON-3G, were found the most, among the samples analyzed; DON and DON-3G were present in 90% and 91% of malt samples, and in 97% and 99% of beer samples, respectively. NIV was found in 24% of malt samples and in 64% of beer samples, and NIV-3G was found in 48% of malt samples and 39% of beer samples. In the malt samples, the mean concentration of DON was 52.9 µg/kg (range: 5.3-347.6 µg/kg) and that of DON-3G was 74.1 µg/kg (range: 4.4-410.3 µg/kg). In the beer samples, the mean concentration of DON was 12.3 µg/L (range: 1.2-156.5 µg/L) and that of DON-3G was 7.1 µg/L (range: 0.6-58.4 µg/L). The concentrations of other tested mycotoxins in the samples of malt and beer were several times lower. The risk of exposure to the tested mycotoxins, following the consumption of beer in Poland, was assessed. The corresponding probable daily intakes (PDIs) remained a small fraction of the tolerable daily intake (TDI). However, in the improbable worst-case scenario, in which every beer bottle consumed would be contaminated with mycotoxins present at the highest level observed among the analyzed beer samples, the PDI would exceed the TDI for DON and its metabolite after the consumption of a single bottle (0.5 L) of beer.


Assuntos
Cerveja/análise , Contaminação de Alimentos/análise , Hordeum , Tricotecenos/análise , Adulto , Exposição Dietética , Humanos , Polônia , Medição de Risco
19.
ACS Sens ; 4(11): 3072-3079, 2019 11 22.
Artigo em Inglês | MEDLINE | ID: mdl-31713421

RESUMO

Mycotoxin contamination causes over $5 billion of economic loss per year in the North American food and feed industry. A rapid, low-cost, portable, and reliable method for on-site detection of deoxynivalenol (DON), a representative mycotoxin predominantly occurring in grains, would be helpful to control mycotoxin contamination. In this study, a paper-based microfluidic chip capable of measuring DON (DON-Chip) in food, feed, and feed ingredients was developed. The DON-Chip incorporated a colorimetric competitive immunoassay into a paper microfluidic device and used gold nanoparticles as a signal indicator. Furthermore, a novel ratiometric analysis method was proposed to improve detection resolvability. Detection of DON in the aqueous extracts from solid food, feed, or feed ingredients was successfully validated with a detection range of 0.01-20 ppm (using dilution factors from 10 to 104). Compared with conventional methods, the DON-Chip method could greatly reduce the cost and time of mycotoxin detection in the food and feed industry.


Assuntos
Análise de Alimentos/economia , Contaminação de Alimentos/análise , Dispositivos Lab-On-A-Chip/economia , Papel , Tricotecenos/análise , Poluentes Químicos da Água/química , Indústria Alimentícia
20.
Toxins (Basel) ; 11(10)2019 09 21.
Artigo em Inglês | MEDLINE | ID: mdl-31546581

RESUMO

Fusarium head blight (FHB) epidemics in wheat and contamination with Fusarium mycotoxins has become an increasing problem over the last decades. This prompted the need for non-invasive and non-destructive techniques to screen cereal grains for Fusarium infection, which is usually accompanied by mycotoxin contamination. This study tested the potential of hyperspectral imaging to monitor the infection of wheat kernels and flour with three Fusarium species. Kernels of two wheat varieties inoculated at anthesis with F. graminearum, F. culmorum, and F. poae were investigated. Hyperspectral images of kernels and flour were taken in the visible-near infrared (VIS-NIR) (400-1000 nm) and short-wave infrared (SWIR) (1000-2500 nm) ranges. The fungal DNA and mycotoxin contents were quantified. Spectral reflectance of Fusarium-damaged kernels (FDK) was significantly higher than non-inoculated ones. In contrast, spectral reflectance of flour from non-inoculated kernels was higher than that of FDK in the VIS and lower in the NIR and SWIR ranges. Spectral reflectance of kernels was positively correlated with fungal DNA and deoxynivalenol (DON) contents. In the case of the flour, this correlation exceeded r = -0.80 in the VIS range. Remarkable peaks of correlation appeared at 1193, 1231, 1446 to 1465, and 1742 to 2500 nm in the SWIR range.


Assuntos
Farinha/microbiologia , Contaminação de Alimentos/análise , Fusarium/isolamento & purificação , Análise Espectral/métodos , Tricotecenos/análise , Triticum/microbiologia , DNA Fúngico/análise , Grão Comestível/microbiologia
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