1
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Junges CH, Guerra CC, Gomes AA, Ferrão MF. Multiblock data applied in organic grape juice authentication by one-class classification OC-PLS. Food Chem 2024; 436:137695. [PMID: 37857206 DOI: 10.1016/j.foodchem.2023.137695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/27/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
A new strategy has been developed to enhance the assessment of the authenticity of whole grape juice within the organic class. This approach is based on the analysis of data from different analytical sources. The novel method employs a multiblock regression technique, specifically the one-class partial least squares (OC-PLS) classifier, to establish a relationship between each predictor block and the response variable. Sequential calculations are performed after orthogonalization with respect to the preceding regression scores. The proposed method has demonstrated effectiveness in detecting targeted samples. The results achieved of the best models for the test set had rates of up to 100 % sensitivity, 89 % specificity, and 83 % accuracy. To compare with the multiblock models, the DD-SIMCA method was employed, but it yielded inferior results when applied to visible data. The multiblock approach proved to be efficient in evaluating from different datasets of varied sources to classification of organic grape juice.
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Affiliation(s)
- Carlos H Junges
- Laboratório de Quimiometria e Instrumentação Analítica (LAQIA), Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul (RS), CEP 91501-970, Brazil.
| | - Celito C Guerra
- Laboratório de Cromatografia e Espectrometria de Massas (LACEM), Unidade Uva e Vinho, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Rua Livramento, 515, Bento Gonçalves, Rio Grande do Sul, CEP 95701-008, Brazil
| | - Adriano A Gomes
- Laboratório de Quimiometria e Instrumentação Analítica (LAQIA), Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul (RS), CEP 91501-970, Brazil
| | - Marco F Ferrão
- Laboratório de Quimiometria e Instrumentação Analítica (LAQIA), Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul (RS), CEP 91501-970, Brazil; Instituto Nacional de Ciência e Tecnologia-Bioanalítica (INCT-Bioanalítica), Cidade Universitária Zeferino Vaz, s/n, Campinas, São Paulo (SP), CEP 13083-970, Brazil
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2
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Deore P, Thekkumpurath AS, Upadhyay A, Devarumath R. Non-target influence of imidacloprid residues on grape global metabolome and berry quality with the identification of metabolite biomarkers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15770-15787. [PMID: 38305977 DOI: 10.1007/s11356-024-32134-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/18/2024] [Indexed: 02/03/2024]
Abstract
This paper illustrates the non-target impact of imidacloprid (IM) residues on the grape global metabolome and biomarker identification with high-resolution mass spectrometry. IM was applied at the recommended dose (SD), and ten times SD (10 RD). The global metabolome analysis revealed that 21 metabolites were up- and down-regulated with IM SD treatment. In 10 RD, 9 metabolites were upregulated, and 28 were downregulated. Pathway enrichment analysis revealed the primary and secondary pathway disruption in grapes. Berry quality was affected with decrease in flavonoids by 32.97% in 10 RD; phenols were reduced by 53.93 in SD, 50.8% in 10 RD. The non-target and target study revealed the degradation of IM in grapes to desnitro-IM and IM-urea which were identified as a potential biomarker for IM residues in grapes, which would benefit the authentication of organic product. Overall, imidacloprid showed a significant impact on the grape metabolome and quality.
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Affiliation(s)
- Pushpa Deore
- ICAR-National Research Centre for Grapes, Pune, Maharashtra, India, 412307
- Vasantdada Sugar Institute, Savitribai Phule Pune University, Pune, Maharashtra, India, 412307
| | | | - Anuradha Upadhyay
- ICAR-National Research Centre for Grapes, Pune, Maharashtra, India, 412307
| | - Rachayya Devarumath
- Vasantdada Sugar Institute, Savitribai Phule Pune University, Pune, Maharashtra, India, 412307
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3
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González N, Pàmies C, Martinez P, Martí L, Domingo JL, Nadal M, Marquès M. Effects of an organic diet intervention on the levels of organophosphorus metabolites in an adult cohort. Food Res Int 2023; 173:113354. [PMID: 37803657 DOI: 10.1016/j.foodres.2023.113354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 10/08/2023]
Abstract
Pesticides are a group of organic compounds used to control weeds or insect infestations in agriculture. Diet is the major route of human exposure to these compounds, which can cause serious health problems, even when the intake occurs at low concentrations. Hence, the consumption of organic food is an appropriate strategy to minimize the exposure to pesticides. A prospective, randomized study was conducted to assess the impact of an organic dietary intervention on the levels of urinary dialkyl phosphates (DAP). A screening of 204 pesticides was also carried out in order to confirm the absence of these compounds in organic food. The analytical results showed that only 20 of the 204 pesticides (9.8 %) had concentrations above the limit of quantification in one or more samples of the organic food consumed by the participants. It is substantially lower than the levels of pesticides found in other studies analysing conventional food, confirming the diet as suitable for the organic dietary intervention. A general reduction of most DAP metabolites in urine was found, being significant (p < 0.05) the decrease of dimethyl phosphate (DMP) (0.49 µg/g creatinine in Day 1 vs. 0.062 µg/g creatinine in Day 6), dimethyl thiophosphate (DMTP) (0.49 µg/g creatinine in Day 1 vs. 0.093 µg/g creatinine in Day 6) and diethyl phosphate (DEP) (0.28 µg/g creatinine in Day 1 vs. 0.12 µg/g creatinine in Day 6). In addition, the molar score for the total dimethyl DAP (ΣMP) and total dialkyl phosphate (ΣDAP) also showed significant differences after changing a conventional diet by an organic diet, being reduced from 0.008 µmol/g to 0.002 µmol/g for ΣMP and from 0.012 µmol/g to 0.003 µmol/g for ΣDAP. To the best of our knowledge, this is the first study that evaluates both the impact of an organic diet in the exposure to DAP and the levels of 204 pesticides in the organic food provided to the participants. In summary, the consumption of organic products decreases the dietary intake of pesticides, thus reducing also the potential adverse effects on human health.
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Affiliation(s)
- Neus González
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - Carla Pàmies
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - Paula Martinez
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - Laura Martí
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - José L Domingo
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - Martí Nadal
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain
| | - Montse Marquès
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain.
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4
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Schusterova D, Mraz P, Uttl L, Drabova L, Kocourek V, Hajslova J. Pesticide residues in fresh and processed edible mushrooms from Czech markets. FOOD ADDITIVES & CONTAMINANTS. PART B, SURVEILLANCE 2023:1-9. [PMID: 37830121 DOI: 10.1080/19393210.2023.2259867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 09/13/2023] [Indexed: 10/14/2023]
Abstract
The occurrence of pesticide residues, their metabolites and degradation products in 49 edible mushrooms (fresh, dried, canned and frozen) was investigated. Using QuEChERS extraction, followed by liquid and gas chromatography coupled with tandem mass spectrometry, the samples collected from Czech markets were tested for 427 analytes. A total of 21 pesticide residues, their metabolites and pesticide synergists were found in quantifiable concentrations. The most frequently detected pesticide residues included prochloraz and its metabolites, metrafenone and carbendazim. Two mushroom samples were found to be in violation of the maximum residue level. In addition, the fate of 13 pesticides during the processing of fresh mushrooms was investigated. The processing factors calculated from the data ranged from 6.0 to 12.3 for drying and from 0.3 to 1.3 for deep-freezing. The results showed that most of the pesticide residues tested were stable under the conditions of mushroom processing.
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Affiliation(s)
- Dana Schusterova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Petr Mraz
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Leos Uttl
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Lucie Drabova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Vladimir Kocourek
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Jana Hajslova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Czech Republic
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5
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Guo L, Li R, Chen W, Dong F, Zheng Y, Li Y. The interaction effects of pesticides with Saccharomyces cerevisiae and their fate during wine-making process. CHEMOSPHERE 2023; 328:138577. [PMID: 37019393 DOI: 10.1016/j.chemosphere.2023.138577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/13/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Pesticide residues in grapes could be transferred to fermentation system during the wine-making process, which may interfere the normal proliferation of Saccharomyces cerevisiae and subsequently affect the safety and quality of wine products. However, the interaction between pesticides and Saccharomyces cerevisiae is still poorly understood. Herein, the fate, distribution and interaction effect with Saccharomyces cerevisiae of five commonly-used pesticides during the wine-making process were evaluated. The five pesticides exerted varied inhibition on the proliferation of Saccharomyces cerevisiae, and the order of inhibition intensity was difenoconazole > tebuconazole > pyraclostrobin > azoxystrobin > thiamethoxam. Compared with the other three pesticides, triazole fungicides difenoconazole and tebuconazole showed stronger inhibition and played a major role in binary exposure. The mode of action, lipophilicity and exposure concentration were important factors in the inhibition of pesticides. Saccharomyces cerevisiae had no obvious impacts on the degradation of target pesticides in the simulated fermentation experiment. However, the levels of target pesticides and their metabolite were significantly reduced during the wine-making process, with the processing factors ranged from 0.030 to 0.236 (or 0.032 to 0.257) during spontaneous (or inoculated) wine-making process. As a result, these pesticides were significantly enriched in the pomace and lees, and showed a positive correlation (R2 ≥ 0.536, n = 12, P < 0.05) between the hydrophobicity of pesticides and distribution coefficients in the solid-liquid distribution system. The findings provide important information for rational selection of pesticides on wine grapes and facilitate more accurate risk assessments of pesticides for grape processing products.
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Affiliation(s)
- Luyao Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Runan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
| | - Wuying Chen
- Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, People's Republic of China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Yuanbo Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
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6
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Ahammed Shabeer TP, Hingmire S, Patil R, Patil A, Sharma AK, Taynath B. Dissipation kinetics and evaluation of processing factor for fluopyram + tebuconazole residues in/on grape and during raisin preparation. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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7
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Avîrvarei AC, Salanță LC, Pop CR, Mudura E, Pasqualone A, Anjos O, Barboza N, Usaga J, Dărab CP, Burja-Udrea C, Zhao H, Fărcaș AC, Coldea TE. Fruit-Based Fermented Beverages: Contamination Sources and Emerging Technologies Applied to Assure Their Safety. Foods 2023; 12:foods12040838. [PMID: 36832913 PMCID: PMC9957501 DOI: 10.3390/foods12040838] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/26/2023] [Accepted: 02/07/2023] [Indexed: 02/18/2023] Open
Abstract
The food and beverage market has become broader due to globalization and consumer claims. Under the umbrella of consumer demands, legislation, nutritional status, and sustainability, the importance of food and beverage safety must be decisive. A significant sector of food production is related to ensuring fruit and vegetable conservation and utilization through fermentation. In this respect, in this review, we critically analyzed the scientific literature regarding the presence of chemical, microbiological and physical hazards in fruit-based fermented beverages. Furthermore, the potential formation of toxic compounds during processing is also discussed. In managing the risks, biological, physical, and chemical techniques can reduce or eliminate any contaminant from fruit-based fermented beverages. Some of these techniques belong to the technological flow of obtaining the beverages (i.e., mycotoxins bound by microorganisms used in fermentation) or are explicitly applied for a specific risk reduction (i.e., mycotoxin oxidation by ozone). Providing manufacturers with information on potential hazards that could jeopardize the safety of fermented fruit-based drinks and strategies to lower or eliminate these hazards is of paramount importance.
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Affiliation(s)
- Alexandra Costina Avîrvarei
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
| | - Liana Claudia Salanță
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Carmen Rodica Pop
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Elena Mudura
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Antonella Pasqualone
- Department of Soil, Plant and Food Science (DISSPA), University of Bari Aldo Moro, I-70126 Bari, Italy
| | - Ofelia Anjos
- Instituto Politécnico de Castelo Branco, 6001-909 Castelo Branco, Portugal
- Forest Research Centre, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal
- Spectroscopy and Chromatography Laboratory, CBP-BI-Centro de Biotecnologia de Plantas da Beira Interior, 6001-909 Castelo Branco, Portugal
| | - Natalia Barboza
- Food Technology Department, University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
- National Center of Food Science and Technology (CITA), University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
| | - Jessie Usaga
- National Center of Food Science and Technology (CITA), University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
| | - Cosmin Pompei Dărab
- Faculty of Electrical Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
| | - Cristina Burja-Udrea
- Industrial Engineering and Management Department, Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania
| | - Haifeng Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Research Institute for Food Nutrition and Human Health, Guangzhou 510640, China
| | - Anca Corina Fărcaș
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Teodora Emilia Coldea
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
- Correspondence:
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8
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Penagos-Tabares F, Sulyok M, Faas J, Krska R, Khiaosa-Ard R, Zebeli Q. Residues of pesticides and veterinary drugs in diets of dairy cattle from conventional and organic farms in Austria. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120626. [PMID: 36370968 DOI: 10.1016/j.envpol.2022.120626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/26/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
Modern agriculture depends highly on pesticides and pharmaceutical preparations, so controlling exposure to these substances in the feed and food chain is essential. This article presents the first study on residues of a broad spectrum of pesticides and veterinary drugs in the diets of dairy cattle. One hundred and two representative samples of the complete diets, including basal feed rations and additional fed concentrate, were collected in three Austrian provinces (Styria, Lower and Upper Austria) in 2019 and 2020. The samples were tested for >700 pesticides, veterinary drugs and related metabolites using a validated method based on liquid chromatography/electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS). In total, 16 residues (13 pesticides and three veterinary drug residues) were detected. > 90% of the diets contained pesticide residues and <10% veterinary drug residues, whereas banned pesticides were not found. The most frequent pesticide residues were fluopyram (62%), piperonyl butoxide (39%) and diethyltoluamide (35%). The following pesticides exceed the default EU maximum residue level (MRL) (10 μg kg-1) for products exclusively used for animal feed production: Benzovindiflupyr (proportion of samples > MRLs: 1%), bixafen (2%), fluopyram (6%), ipconazole (1%) and tebuconazole (3%). Three residues (dinitrocarbanilide, monensin and nicarbazin) of veterinary drugs were identified, all below the MRLs. Over 60% of the evaluated samples contained mixtures of two to six residues/sample. Only one pesticide (diethyltoluamide) presented a significant difference among regions, with higher concentrations in Upper Austria. Brewery's spent grains were the dietary ingredient that showed the strongest correlation to pesticide residues. These findings evidence the realistic scenario of highly occurrent low doses of pesticides cocktails in the feed/food chain, which may affect the animal, human and environmental health. Since the risk assessments are based on single pesticides, the potential synergistic effect of co-occurring chemicals ("cocktail effect") requires further investigations.
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Affiliation(s)
- Felipe Penagos-Tabares
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, Vienna, 1210, Austria.
| | - Michael Sulyok
- University of Natural Resources and Life Sciences, Vienna, Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, Konrad Lorenz-Strasse 20, 3430, Tulln, Austria.
| | - Johannes Faas
- DSM - BIOMIN Research Center, Technopark 1, Tulln, 3430, Austria.
| | - Rudolf Krska
- University of Natural Resources and Life Sciences, Vienna, Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, Konrad Lorenz-Strasse 20, 3430, Tulln, Austria; Institute for Global Food Security, School of Biological Sciences, Queens University Belfast, University Road, Belfast, BT7 1NN, Northern Ireland, United Kingdom.
| | - Ratchaneewan Khiaosa-Ard
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, Vienna, 1210, Austria.
| | - Qendrim Zebeli
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, Vienna, 1210, Austria; Christian-Doppler-Laboratory for Innovative Gut Health Concepts in Livestock (CDL-LiveGUT), Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Veterinaerplatz 1, Vienna, 1210, Austria.
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9
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Giacomini RX, Barnes Rodrigues Cerqueira M, Primel EG, Garda-Buffon J. Monitoring of mycotoxins and pesticides in winemaking. CIÊNCIA E TÉCNICA VITIVINÍCOLA 2023. [DOI: 10.1051/ctv/ctv20233801010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study monitored concentrations of both pesticides 2,4-dichlorophenoxyacetic acid (2,4-D) and procymidone, and mycotoxin ochratoxin A (OTA) in stages of the winemaking process. Sampling was carried out in the usual vinification process of red wine in a winery between the steps to obtain must and alcoholic fermentation. The highest transference of contaminants in the process occurred in the crushing step to 2,4-D (100%) and maceration to OTA and procymidone (100%). Removal of contaminants in the winemaking process corresponded to 100%, with a half-life (T1/2) longer for procymidone (216.5 h) and shorter for 2,4-D (38.5 h) and OTA (96 h). The processing factors (PFs) (0) for the contaminants, together with the data obtained, characterize winemaking as a process of reducing mycotoxin and pesticides. Results highlight the importance of fermentation to reduce contaminants and that yeasts promote detoxification
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10
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Mahmoud LA, dos Reis RA, Chen X, Ting VP, Nayak S. Metal-Organic Frameworks as Potential Agents for Extraction and Delivery of Pesticides and Agrochemicals. ACS OMEGA 2022; 7:45910-45934. [PMID: 36570238 PMCID: PMC9773949 DOI: 10.1021/acsomega.2c05978] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Pesticide contamination is a global issue, affecting nearly 44% of the global farming population, and disproportionately affecting farmers and agricultural workers in developing countries. Despite this, global pesticide usage is on the rise, with the growing demand of global food production with increasing population. Different types of porous materials, such as carbon and zeolites, have been explored for the remediation of pesticides from the environment. However, there are some limitations with these materials, especially due to lack of functional groups and relatively modest surface areas. In this regard, metal-organic frameworks (MOFs) provide us with a better alternative to conventionally used porous materials due to their versatile and highly porous structure. Recently, a number of MOFs have been studied for the extraction of pesticides from the environment as well as for targeted and controlled release of agrochemicals. Different types of pesticides and conditions have been investigated, and MOFs have proved their potential in agricultural applications. In this review, the latest studies on delivery and extraction of pesticides using MOFs are systematically reviewed, along with some recent studies on greener ways of pest control through the slow release of chemical compounds from MOF composites. Finally, we present our insights into the key issues concerning the development and translational applications of using MOFs for targeted delivery and pesticide control.
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Affiliation(s)
- Lila A.
M. Mahmoud
- School
of Chemistry and Biosciences, University
of Bradford, Bradford BD7 1DP, United Kingdom
- School
of Pharmacy, Al-Zaytoonah University of
Jordan, Amman 11733, Jordan
| | - Roberta A. dos Reis
- School
of Chemistry and Biosciences, University
of Bradford, Bradford BD7 1DP, United Kingdom
- Centro
de Ciências Naturais e Humanas, Universidade
Federal do ABC, Santo André, SP 09210, Brazil
| | - Xianfeng Chen
- School
of Engineering, Institute for Bioengineering, The University of Edinburgh, Edinburgh EH9 3JL, United Kingdom
| | - Valeska P. Ting
- Bristol
Composites Institute, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
| | - Sanjit Nayak
- School
of Chemistry and Biosciences, University
of Bradford, Bradford BD7 1DP, United Kingdom
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11
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Crocoli LC, Ramires N, Moura S. Determination of Pesticide Residues in Grapes Consumed in Natura and for Juice and Wine Production by High-Performance Liquid Chromatography with High Resolution Mass Spectrometry (HPLC-HRMS). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2134413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Luana C. Crocoli
- LBIOP – Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Biotechnology Institute, University of Caxias do Sul, Caxias do Sul, Brazil
| | - Nicole Ramires
- LBIOP – Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Biotechnology Institute, University of Caxias do Sul, Caxias do Sul, Brazil
| | - Sidnei Moura
- LBIOP – Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Biotechnology Institute, University of Caxias do Sul, Caxias do Sul, Brazil
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12
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Reddy BKK, Bhuvaneswari K, Geetha P, Thamilarasi N, Suganthi A, Paramasivam M. Effect of decontamination and processing on insecticide residues in grape (Muscat Hamburg). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:75790-75804. [PMID: 35661308 DOI: 10.1007/s11356-022-21165-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Field and laboratory experiments were conducted to study the effect of simple decontamination methods and processing on imidacloprid, dimethoate, and emamectin benzoate residues in grapes and their processed products by liquid chromatography-mass spectrometry. Among the decontamination methods evaluated, washing with NaCl (2%) solution was effective for reducing imidacloprid (77.55%), dimethoate (83.27%), and emamectin benzoate (77.28%) residues in mature grapes. No metabolites (omethoate and 6-chloronicotinic acid) were detected in both decontamination and processing studies. The grapes were processed into various products, including fresh juice, squash, and raisin, following the standard effective steps for each product. Washing with NaCl (2%) solution for decontamination was included as an additional step in the standard protocol and resulted in substantial removal of surface residues of the selected insecticides. The processing factor calculated was less than one for all the products.
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Affiliation(s)
| | | | - Padmanaban Geetha
- Department of Food Processing, Tamil Nadu Agricultural University, Coimbatore, India
| | - Natarajan Thamilarasi
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
| | - Angappan Suganthi
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
| | - Mariappan Paramasivam
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
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Differences in the levels of sulphites and pesticide residues in soils and wines and under organic and conventional production methods. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Determination of pesticide residues in chilli and Sichuan pepper by high performance liquid chromatography quadrupole time-of-flight mass spectrometry. Food Chem 2022; 387:132915. [DOI: 10.1016/j.foodchem.2022.132915] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 03/25/2022] [Accepted: 04/05/2022] [Indexed: 12/26/2022]
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15
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Maluleke E, Jolly NP, Patterton HG, Setati ME. Antifungal activity of non-conventional yeasts against Botrytis cinerea and non-Botrytis grape bunch rot fungi. Front Microbiol 2022; 13:986229. [PMID: 36081805 PMCID: PMC9445577 DOI: 10.3389/fmicb.2022.986229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 07/29/2022] [Indexed: 11/25/2022] Open
Abstract
Grapes harbour a plethora of non-conventional yeast species. Over the past two decades, several of the species have been extensively characterised and their contribution to wine quality is better understood. Beyond fermentation, some of the species have been investigated for their potential as alternative biological tools to reduce grape and wine spoilage. However, such studies remain limited to a few genera. This work aimed to evaluate the antagonistic activity of grape must-derived non-conventional yeasts against Botrytis cinerea and non-Botrytis bunch-rotting moulds and to further elucidate mechanisms conferring antifungal activity. A total of 31 yeast strains representing 21 species were screened on different agar media using a dual culture technique and liquid mixed cultures, respectively. Pichia kudriavzevii was the most potent with a minimum inhibitory concentration of 102 cells/mL against B. cinerea but it had a narrow activity spectrum. Twelve of the yeast strains displayed broad antagonistic activity, inhibiting three strains of B. cinerea (B05. 10, IWBT FF1 and IWBT FF2), a strain of Aspergillus niger and Alternaria alternata. Production of chitinases and glucanases in the presence of B. cinerea was a common feature in most of the antagonists. Volatile and non-volatile compounds produced by antagonistic yeast strains in the presence of B. cinerea were analysed and identified using gas and liquid chromatography mass spectrometry, respectively. The volatile compounds identified belonged mainly to higher alcohols, esters, organosulfur compounds and monoterpenes while the non-volatile compounds were cyclic peptides and diketopiperazine. To our knowledge, this is the first report to demonstrate inhibitory effect of the non-volatile compounds produced by various yeast species.
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Affiliation(s)
- Evelyn Maluleke
- Department of Viticulture and Oenology, South African Grape and Wine Research Institute, Stellenbosch University, Matieland, South Africa
| | - Neil Paul Jolly
- Post Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Stellenbosch, South Africa
| | - Hugh George Patterton
- Centre for Bioinformatics and Computational Biology, Stellenbosch University, Matieland, South Africa
| | - Mathabatha Evodia Setati
- Department of Viticulture and Oenology, South African Grape and Wine Research Institute, Stellenbosch University, Matieland, South Africa
- *Correspondence: Mathabatha Evodia Setati,
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16
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Dumitriu Gabur GD, Gabur I, Cucolea EI, Costache T, Rambu D, Cotea VV, Teodosiu C. Investigating Six Common Pesticides Residues and Dietary Risk Assessment of Romanian Wine Varieties. Foods 2022; 11:foods11152225. [PMID: 35892809 PMCID: PMC9368409 DOI: 10.3390/foods11152225] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 12/10/2022] Open
Abstract
The food and environmental safety debate extends to the use of pesticides in agriculture including the wine sector, which is one of the most intensive pesticide users across the agricultural sector. Pesticide utilisation is a common agricultural practice to protect fruits and plants from pathogens and insects while maintaining high production levels. Grapevine is generally a crop that is subject to intensive phytosanitary treatments, and therefore, it can be assumed that pesticide residues will accumulate in the vine-shoots and, later on, end up in the grapes and wines. The aim of this study was to determine the pesticide content in red, rosé, and white wines after phytosanitary treatments applied in the vineyard and their impact on long-term dietary risks. The following six pesticides were analysed: oxathiapiprolin, myclobutanil, iprovalicarb, tebuconazole, chlorantraniliprole, and acetamiprid. Samples were extracted using the QuEChERS (quick, easy, cheap, effective, rugged, and safe) method and analysed for the residues of pesticides by liquid chromatography-tandem mass spectrometry. Results indicated that the observed pesticides in the wine samples ranged between 0.05 and 0.75 ng/g. Dietary risks due to pesticide residues for women and men were evaluated using the estimated daily intake (EDI), hazard quotient (HQ), and hazard index (HI) of wines. The HQs and HIs did not surpass the 1 value (HQ, HI < 1) for both women and men, denoting that the concentrations of pesticide residues in these wine samples do not pose any immediate risk to consumers. Moreover, a pesticide residue intake model (PRIMo) model analysis was conducted, and the results suggest that European adult consumers have a low pesticide residue intake due to moderate wine consumption. However, pesticide residue intakes have been associated with several human health problems and high toxicity levels, therefore reliable analytical methods to monitor their presence in horticultural crops is crucial for clean and safe food products and healthy consumers.
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Affiliation(s)
- Georgiana-Diana Dumitriu Gabur
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
- Faculty of Horticulture, Iasi University of Life Sciences, 700490 Iasi, Romania;
| | - Iulian Gabur
- Department of Plant Science, Iasi University of Life Sciences, 700490 Iasi, Romania
- Correspondence: (I.G.); (C.T.)
| | - Elena Iulia Cucolea
- Scient Research Centre for Instrumental Analysis, Tancabești, 077167 Ilfov, Romania; (E.I.C.); (T.C.); (D.R.)
| | - Teodor Costache
- Scient Research Centre for Instrumental Analysis, Tancabești, 077167 Ilfov, Romania; (E.I.C.); (T.C.); (D.R.)
| | - Dan Rambu
- Scient Research Centre for Instrumental Analysis, Tancabești, 077167 Ilfov, Romania; (E.I.C.); (T.C.); (D.R.)
| | - Valeriu V. Cotea
- Faculty of Horticulture, Iasi University of Life Sciences, 700490 Iasi, Romania;
| | - Carmen Teodosiu
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
- Correspondence: (I.G.); (C.T.)
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17
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Transfer of Pesticide Residues from Grapes (Vitis vinifera) into Wine—Correlation with Selected Physicochemical Properties of the Active Substances. TOXICS 2022; 10:toxics10050248. [PMID: 35622661 PMCID: PMC9147552 DOI: 10.3390/toxics10050248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 02/05/2023]
Abstract
The concentration of pesticide residues in agricultural products at harvest can change during subsequent processing steps. This change, commonly expressed as Processing Factor (PF), is influenced by the raw agricultural commodity, and the processing conditions, as well as the properties of the substances. As it is not possible to conduct processing studies for all possible combinations of pesticide × process × product, new approaches for determining processing factors are needed. Wine was chosen as the object of the present study because it is a widely consumed product. Furthermore, it is already known that the concentration of pesticide residues can change considerably during the processing of grapes into wine, substantiating the need for PFs for a large number of pesticides. The aim of the present study was to investigate the correlation between selected physicochemical properties and PFs. In addition, the influence of different winemaking processes was explored. For this purpose, 70 processing studies conducted by pesticide manufacturers in the framework of regulatory procedures were evaluated in detail and PFs were derived for 20 pesticides. For wine, a good correlation between the PF and the octanol-water partition coefficient of the substances was found, depending on the specific production methods used. Exemplarily, the coefficient of determination for white wine was 0.85, and 0.81 for red wine, when thermovinification was applied. These results can serve as the basis for a predictive model to be validated further with future winemaking studies for pesticides.
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18
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Tsagkaris AS, Uttl L, Dzuman Z, Pulkrabova J, Hajslova J. A critical comparison between an ultra-high-performance liquid chromatography triple quadrupole mass spectrometry (UHPLC-QqQ-MS) method and an enzyme assay for anti-cholinesterase pesticide residue detection in cereal matrices. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1479-1489. [PMID: 35343530 DOI: 10.1039/d2ay00355d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Analytical method development for the control of pesticide residues occurring in significant dietary foodstuffs is of utmost importance considering their potential impact on consumer health and food market sustainability. Depending on the purpose, either instrumental analysis, mainly chromatographic methods, or screening assays, mostly using biorecognition affinity, are commonly used, featuring different advantages and drawbacks. To practically compare these two different types of analytical strategies, we applied them for the detection of (i) 97 organophosphate (OP) and carbamate (CM) pesticide residues in wheat flour and (ii) carbofuran (a carbamate insecticide) in wheat, rye and maize flour samples. Regarding high-end analysis, an ultra-high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (UHPLC-QqQ-MS) method was developed and validated achieving low limits of quantification (LOQs, from 0.002 to 0.040 mg kg-1) and a short chromatographic run (12 min). In terms of bioanalytical methods, a fast (17 min) and cost-efficient (∼0.01€ per sample) acetylcholinesterase (AChE) microplate assay for carbofuran screening was utilized. Importantly, carbofuran was the strongest of the 11 OP and CM tested pesticides achieving a half maximal inhibitory concentration (IC50) of 0.021 μM whilst the assay detectability was at the parts per billion level in all three cereal matrices. Based on the attained results, a critical discussion is presented providing the analytical merits and bottlenecks for each case and a wider outlook related to the application of analytical methods in the food safety control analytical scheme.
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Affiliation(s)
- A S Tsagkaris
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 - Dejvice, Prague, Czech Republic.
| | - L Uttl
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 - Dejvice, Prague, Czech Republic.
| | - Z Dzuman
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 - Dejvice, Prague, Czech Republic.
| | - J Pulkrabova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 - Dejvice, Prague, Czech Republic.
| | - J Hajslova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 - Dejvice, Prague, Czech Republic.
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19
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Čuš F, Česnik HB, Bolta ŠV. Pesticide residues, copper and biogenic amines in conventional and organic wines. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108534] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Pérez-Mayán L, Ramil M, Cela R, Rodríguez I. Determination of pesticide residues in wine by solid-phase extraction on-line combined with liquid chromatography tandem mass spectrometry. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.104184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Liu S, Bai A, Song L, Zou N, Han Y, Zhou L, Yu C, Li C, Pan C. Utilizing a Rapid Multi-Plug Filtration Cleanup Method for 72 Pesticide Residues in Grape Wines Followed by Detection with Gas Chromatography Tandem Mass Spectrometry. Foods 2021; 10:foods10112731. [PMID: 34829012 PMCID: PMC8623294 DOI: 10.3390/foods10112731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
A convenient and fast multi-residue method for the efficient identification and quantification of 72 pesticides belonging to different chemical classes in red and white grape wines has been developed. The analysis was based on gas chromatography tandem quadrupole mass spectrometric determination (GC-MS/MS). The optimization strategy involved the selection of the amount of multi-walled carbon nanotubes (MWCNTs) and the number of cleanup procedure cycles for multi-plug filtration cleanup (m-PFC) to achieve ideal recoveries and reduce the sample matrix compounds in the final extracts. The optimized procedure obtained consistent recoveries between 70.2 and 108.8% (70.2 and 108.8% for white wine, and 72.3 and 108.4% for red wine), with relative standard deviations (RSDs) that were generally lower than 9.2% at the three spiking levels of 0.01, 0.05 and 0.1 mg/kg. The linearity was studied in the range between 0.002 and 0.1 mg/kg using pesticide standards prepared both in pure solvent and in the presence of the matrix, showing coefficients of determination (R2) higher than 0.9495 for all the pesticides. To improve accuracy, matrix-matched calibration curves were used for calculating the quantification results. Finally, the method was used successfully for detecting pesticide residues in commercial grape wines.
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Affiliation(s)
- Shaowen Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
- Hunan Institute of Agricultural Environment and Ecology, Changsha 410125, China;
| | - Aijuan Bai
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
| | - Le Song
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
| | - Nan Zou
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
| | - Yongtao Han
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
| | - Li Zhou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;
| | - Chuanshan Yu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
| | - Changjun Li
- Hunan Institute of Agricultural Environment and Ecology, Changsha 410125, China;
| | - Canping Pan
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; (S.L.); (A.B.); (L.S.); (N.Z.); (Y.H.); (C.Y.)
- Correspondence: ; Fax: +86-10-6273-3620
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22
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Jamalidoust M, Aliabadi N, Namayandeh M, Ziyaeyan M. Human Herpesvirus 6 as an Indicator of Cytomegalovirus Infection and Its Attributable Disease Symptoms in Liver Transplant Recipients. EXP CLIN TRANSPLANT 2019; 19:703-707. [PMID: 31724929 DOI: 10.6002/ect.2019.0119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Human β-herpes viruses, including cytomegalovirus and human herpesvirus 6, can become activated in liver transplant patients. Here, we evaluated the effects of human herpesvirus 6 infection as an independent factor on cytomegalovirus infection and the occurrence of associated diseases in liver transplant patients. MATERIALS AND METHODS In this cross-sectional study, 46 patients who underwent deceased-donor liver transplant at Nemazi Hospital, Shiraz University of Medical Sciences (Shiraz, Iran) were prospectively monitored for cytomegalovirus and human herpesvirus 6 infections during 3 months posttransplant. Taq-man real-time polymerase chain reaction assay as an accurate and rapid test and pp65-anigenemia as the standard test were used to monitor cytomegalovirus infections, whereas human herpesvirus 6 infection was monitored by Taq-man real-time polymerase chain reaction assay. We also followed clinical findings from laboratory data and symptoms of cytomegalovirus infections. RESULTS Active cytomegalovirus infection was detected in 23 liver transplant recipients (50%), of which 17 (74%) were diagnosed with cytomegalovirus-related diseases. Active human herpesvirus 6 infection was detected in 25 patients (54%). Thirteen of 17 cytomegalovirussymptomatic patients had coinfection with human herpesvirus 6. In 10 ofthe 13 patients with coinfection, human herpesvirus 6 DNAemia appeared significantly earlier by 9 days than cytomegalovirus infection. In the pp65 antigenemia test, the mean number of cytomegalovirus-infected polymorphonuclear cells was 42.47 ± 5.41, which was correlated with incidence of clinical presentation. In symptomatic patients, average serum and polymorphonuclear cell viral loads of cytomegalovirus were 12064.59 copies/mL and 6735 copies/2 × 105 cells,respectively, with significant differences between the loads and cytomegalovirusattributable disease symptoms. Average human herpesvirus 6 DNA burden in serum samples of symptomatic patients was 11283 copies /mL, which was statistically related to cytomegalovirus-attributable disease symptoms. CONCLUSIONS We found that human herpesvirus 6 infection is often associated with cytomegalovirus reactivation and cytomegalovirus-attributable disease symptoms.
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Affiliation(s)
- Marzieh Jamalidoust
- From the Professor Alborzi Clinical Microbiology Research Center, Nemazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
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