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Zhao W, Ma X, Yan H, Zhang L, Shi W, Zhou Y. Aspergillus flavus and aflatoxins control in long-term storage of food ingredients of Puerh tea, peanut and polished rice. Food Chem 2024; 461:140805. [PMID: 39181056 DOI: 10.1016/j.foodchem.2024.140805] [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: 06/09/2024] [Revised: 07/25/2024] [Accepted: 08/07/2024] [Indexed: 08/27/2024]
Abstract
Aflatoxins are a group of high toxic mycotoxins in food chain. Recent studies showed that aflatoxins might contaminate post-fermented tea, but the result remains controversial. Here, Aspgergillus flavus growth and aflatoxin production were characterized in Puerh tea, peanut and polished rice at different initial water activity (aw) values for long-term storage. As a result, food initial aw value was the critical factor for A. flavus growth and aflatoxin production, and A. flavus almost not grew on foods at aw value lower than 0.8. A. flavus grew best in peanut, followed by rice, but growth on Puerh tea was limited. A. flavus growth was inhibited significantly by adding tea to Potato Dextrose Agar (PDA). Accordingly, aflatoxins produced dramatically in peanut, followed by rice at the first 90 days storage. However, aflatoxin neither produced in Puerh tea nor on tea modified PDA, indicating tea components inhibited A. flavus growth and aflatoxins synthesis.
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Affiliation(s)
- Weifan Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Xue Ma
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Hangbin Yan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Liang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Wei Shi
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Yu Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China; Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization, Ministry of Agriculture and Rural Affairs, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China.
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2
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Wu T, Kang K, Xia Y, Deng H, Han B, Han X, Xie Y, Li C, Zhan J, Huang W, You Y. Development and validation of a liquid chromatography tandem mass spectrometry method for the determination of 10 mycotoxins in beer of the Chinese market and exposure estimate. Food Res Int 2024; 184:114256. [PMID: 38609234 DOI: 10.1016/j.foodres.2024.114256] [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: 08/26/2023] [Revised: 03/11/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024]
Abstract
Mycotoxins are important risk factors in beer. In this study, a liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed to determine 10 mycotoxins in beer within 6 min. The method is fast, efficient, and has a simple and quick sample preparation. Validation was conducted based on the performance standards specified in Commission Decision 657/2002/EC, and the results demonstrated excellent linearity (R2 > 0.99), repeatability (RSD < 5 %), quantification limits (0.005-20.246 µg/L), and recovery rates (77 %-118 %). The prevalence of the 10 mycotoxins in 96 beers purchased from the Chinese market was analyzed, and the exposure of the Chinese population to mycotoxins through beer consumption was assessed. Deoxynivalenol (DON) was detected in 93.75 % of the beers, and the incidence of fumonisins (FBs) and zearalenone (ZEN) exceeded 50 %. Beer intake contributed significantly to the exposure of aflatoxins (AFs) and DON, especially in males. Correlation analysis between mycotoxin content in beer, raw materials, and the brewing process revealed that the brewing process significantly affected the content of DON (P < 0.001), while auxiliary materials also had a significant impact on the content of FBs and DON (P < 0.001). This study holds great significance in producing higher quality and safer beer.
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Affiliation(s)
- Tianyang Wu
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Kun Kang
- Anheuser-Busch Inbeve (Foshan) Brewery Co., Ltd., No.1 Baiwei Avenue, Sanshui District, Foshan City, Guangdong Province 528100, China.
| | - Ying Xia
- Anheuser-Busch Inbev (Wuhan) Beer Co., Ltd Craft Brewery, Qingduankou, Hanyang District, Wuhan City 430050, China.
| | - Huan Deng
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Bing Han
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Xiaoyu Han
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Yiding Xie
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Chenyu Li
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Jicheng Zhan
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China.
| | - Yilin You
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Tsinghua East Road 17, Haidian District, Beijing 100083, China; Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua 225700, Jiangsu, China.
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3
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Yan H, Zhao W, Parveen A, Ye Z, Fei Q, Wang X, Zhou Y. Comprehensive and cumulative risk evaluation of dietary exposure to aflatoxins and ochratoxin A on fermented teas worldwide by a new assessment model. Food Chem Toxicol 2024; 184:114321. [PMID: 38072213 DOI: 10.1016/j.fct.2023.114321] [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: 08/24/2023] [Revised: 11/19/2023] [Accepted: 11/29/2023] [Indexed: 01/27/2024]
Abstract
Recently, mycotoxin risks in fermented tea have received high attention, but mycotoxin transfer rates from tealeaf to infusion during brewing were rarely considered. In addition, the assessment data (i.e., mycotoxin occurrences and tea consumption) in previous assessments were usually limited. Here, a comprehensive and cumulative risk assessment of aflatoxins and ochratoxin A was performed using a tea assessment model, by which mycotoxin transfer rates were included and the assessment data were collected worldwide. By 10 times of brewing, the aflatoxin transfer rate was only 2.94% and OTA was 63.65%. Besides the extreme case, hazard quotients (HQs) from all consumers were lower than the threshold of 1.0, indicating no noncarcinogenic risk; the P95 cumulative margin of exposure (1/MoET) values were 2.52E-04 (30-39 years of age) and 2.42E-04 (≥50 years of age) for two high exposure groups under the upper bound scenario, which a little higher than the carcinogenic risk threshold of 1.00E-04. Notably, the P95 cumulative 1/MoET values (3.24E-03 -7.95E-03) by food assessment model were ten times higher than those of by tea assessment model. The comparative results showed that mycotoxin dietary risks on tea consumption by food assessment model were much overestimated. The result of this study indicated that the contaminants transfer rates should be considered for risk assessment on tea consumption in future work.
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Affiliation(s)
- Hangbin Yan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China; Lu'an Institute of Supervision and Inspection on Product Quality, Anhui, Lu'an, 237000, China
| | - Weifan Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China
| | - Asma Parveen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China
| | - Ziling Ye
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China
| | - Qingru Fei
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China
| | - Xu Wang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China
| | - Yu Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Road West, Hefei, 230036, China.
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Hassan HF, Tashani H, Ballouk F, Daou R, El Khoury A, Abiad MG, AlKhatib A, Hassan M, El Khatib S, Dimassi H. Aflatoxins and Ochratoxin A in Tea Sold in Lebanon: Effects of Type, Packaging, and Origin. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6556. [PMID: 37623142 PMCID: PMC10454378 DOI: 10.3390/ijerph20166556] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 08/26/2023]
Abstract
Tea is among the oldest and most-known beverages around the world, and it has many flavors and types. Tea can be easily contaminated in any of its production steps, especially with mycotoxins that are produced particularly in humid and warm environments. This study aims to examine the level of ochratoxin A (OTA) and total aflatoxin (AF) contamination in black and green tea sold in Lebanon, evaluate its safety compared to international standards, and assess the effect of different variables on the levels of OTA and AFs. For this, the Lebanese market was screened and all tea brands (n = 37; 24 black and 13 green) were collected twice. The Enzyme-Linked Immunoassay (ELISA) method was used to determine OTA and AFs in the samples. AFs and OTA were detected in 28 (75.7%) and 31 (88.6%) samples, respectively. The average of AFs in the positive (above detection limit: 1.75 μg/kg) samples was 2.66 ± 0.15 μg/kg, while the average of OTA in the positive (above detection limit: 1.6 μg/kg) samples was 3.74 ± 0.72 μg/kg. The mean AFs in black and green tea were 2.65 ± 0.55 and 2.54 ± 0.40 μg/kg, respectively, while for OTA, the mean levels were 3.67 ± 0.96 and 3.46 ± 1.09 μg/kg in black and green tea samples, respectively. Four brands (10.8%) contained total aflatoxin levels above the EU limit (4 μg/kg). As for OTA, all samples had OTA levels below the Chinese limit (5 μg/kg). No significant association (p > 0.05) was found between OTA and tea type, level of packaging, country of origin, country of packing, and country of distribution. However, AF contamination was significantly (p < 0.05) higher in unpacked tea, and in brands where the country of origin, packing, and distributor was in Asia. The results showed that the tea brands in Lebanon are relatively safe in terms of AFs and OTA.
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Affiliation(s)
- Hussein F. Hassan
- Nutrition Program, Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon (M.H.)
| | - Hadeel Tashani
- Nutrition Program, Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon (M.H.)
| | - Farah Ballouk
- Department of Nutrition and Food Sciences, School of Arts and Sciences, Lebanese International University, Beirut P.O. Box 146404, Lebanon
| | - Rouaa Daou
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculty of Sciences, Campus of Sciences and Technologies, Saint Joseph University of Beirut, Mar Roukoz P.O. Box 17-5208, Lebanon
| | - André El Khoury
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculty of Sciences, Campus of Sciences and Technologies, Saint Joseph University of Beirut, Mar Roukoz P.O. Box 17-5208, Lebanon
| | - Mohamad G. Abiad
- Department of Nutrition and Food Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut P.O. Box 11-0236, Lebanon
- Laboratories for the Environment, Agriculture, and Food (LEAF), Faculty of Agricultural and Food Sciences, American University of Beirut, P.O. Box 11-0236, Beirut 1107-2020, Lebanon
| | - Ali AlKhatib
- Department of Nutrition and Food Sciences, School of Arts and Sciences, Lebanese International University, Beirut P.O. Box 146404, Lebanon
| | - Mahdi Hassan
- Nutrition Program, Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon (M.H.)
| | - Sami El Khatib
- Department of Food Sciences and Technology, School of Arts and Sciences, Lebanese International University, Bekaa P.O. Box 146404, Lebanon;
- Center for Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
| | - Hani Dimassi
- School of Pharmacy, Lebanese American University, Byblos P.O. Box 36, Lebanon
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5
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Prakasham K, Gurrani S, Shiea J, Wu MT, Singhania RR, Patel AK, Dong CD, Lin YC, Tsai B, Huang PC, Andaluri G, Ponnusamy VK. Facile analysis of mycotoxin in coffee and tea samples using a novel semi-automated in-syringe based fast mycotoxin extraction (FaMEx) technique coupled with direct-injection ESI-MS/MS analysis. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:1992-2000. [PMID: 37206414 PMCID: PMC10188741 DOI: 10.1007/s13197-023-05733-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 05/21/2023]
Abstract
Identifying the risk of ochratoxin A in our daily food has become fundamental because of its toxicity. In this work, we report a novel semi-automated in-syringe-based fast mycotoxin extraction (IS-FaMEx) technique coupled with direct-injection electrospray-ionization tandem mass spectrometer (ESI-MS/MS) detection for the quantification of ochratoxin A in coffee and tea samples. Under the optimized conditions, the results reveal that the developed method's linearity was more remarkable, with a correlation coefficient of > 0.999 and > 92% extraction recovery with a precision of 6%. The detection and quantification limits for ochratoxin A were 0.2 and 0.8 ng g-1 for the developed method, respectively, which is lower than the European Union regulatory limit of toxicity for ochratoxin-A (5 ng g-1) in coffee. Furthermore, the newly developed modified IS-FaMEx-ESI-MS/MS exhibited lower signal suppression of 8% with a good green metric score of 0.64. In addition, the IS-FaMEx-ESI-MS/MS showed good extraction recovery, matrix elimination, good detection, and quantification limits with high accuracy and precision due to the fewer extraction steps with semi-automation. Therefore, the presented method can be applied as a potential methodology for the detection of mycotoxins in food products for food safety and quality control purposes. Supplementary Information The online version contains supplementary material available at 10.1007/s13197-023-05733-z.
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Affiliation(s)
- Karthikeyan Prakasham
- PhD Program in Environmental and Occupational Medicine, & Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
| | - Swapnil Gurrani
- PhD Program in Environmental and Occupational Medicine, & Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
| | - Jentaie Shiea
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung City, 804 Taiwan
| | - Ming-Tsang Wu
- PhD Program in Environmental and Occupational Medicine, & Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
- Department of Public Health, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
| | - Reeta Rani Singhania
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City, 81157 Taiwan
| | - Anil Kumar Patel
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City, 81157 Taiwan
| | - Cheng-Di Dong
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City, 81157 Taiwan
| | - Yu-Chia Lin
- Research and Development Division, Great Engineering Technology (GETECH) Corporation, No.392, Yucheng Rd., Zuoying District, Kaohsiung City, 813 Taiwan
| | - Bongee Tsai
- Research and Development Division, Great Engineering Technology (GETECH) Corporation, No.392, Yucheng Rd., Zuoying District, Kaohsiung City, 813 Taiwan
| | - Po-Chin Huang
- PhD Program in Environmental and Occupational Medicine, & Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
- National Institute of Environmental Health Sciences, National Health Research Institutes (NHRI), Miaoli County, 35053 Taiwan
| | - Gangadhar Andaluri
- Civil and Environmental Engineering Department, College of Engineering, Temple University, Philadelphia, USA
| | - Vinoth Kumar Ponnusamy
- PhD Program in Environmental and Occupational Medicine, & Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, 807 Taiwan
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung City, 804 Taiwan
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City, 81157 Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City, 807 Taiwan
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Wu R, Guo J, Wang M, Liu H, Ding L, Yang R, Liu LE, Liu Z. Fluorescent Sensor Based on Magnetic Separation and Strand Displacement Amplification for the Sensitive Detection of Ochratoxin A. ACS OMEGA 2023; 8:15741-15750. [PMID: 37151502 PMCID: PMC10157876 DOI: 10.1021/acsomega.3c01408] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
Ochratoxin A (OTA) is a common mycotoxin, and it is a significant threat to human health throughout the food chain. In this study, a sensitive and specific fluorescent sensor based on magnetic separation technology combined with chain displacement amplification was developed for fast and easy detection of OTA in food. The designed strand displacement amplification can improve the sensitivity for the detection, and the magnetic nanomaterials can provide a large surface area, thus enhancing the capture efficiency of the target from the sample. Based on those designs, the experimental results showed that the proposed method displayed excellent performance. The linearity range was 0.5-128.0 ng/mL. The detection limit was 0.125 ng/mL; the relative standard deviations were 3.92-7.71%. Additionally, the developed method was satisfactorily applied to determine OTA in wheat, corn, and red wine samples at three spiked levels (1.0, 8.0, and 64.0 ng/mL). The recoveries ranged from 85.45 to 107.8% for wheat flour, 101.34 to 108.35% for corn flour, and 91.15 to 93.80% for red wine, respectively. Compared with high-performance liquid chromatography, the proposed method showed a lower limit of detection and equal recovery. Hence, the designed method is a potential and good detecting tool for OTA residue analysis in complex matrix samples.
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Affiliation(s)
- Ruoyu Wu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jiaping Guo
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Minkai Wang
- Department
of Neurosurgery, First Affiliated Hospital
of Zhengzhou University, Zhengzhou, Henan 450052, People’s Republic of China
| | - Huimin Liu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Lihua Ding
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Ruiying Yang
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Li-e Liu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Zhiyong Liu
- Key
Laboratory of Food Safety Quick Testing and Smart Supervision Technology
for State Market Regulation, Beijing 100094, People’s
Republic of China
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Ponce MDV, Cina M, López C, Cerutti S. Polyurethane Foam as a Novel Material for Ochratoxin A Removal in Tea and Herbal Infusions-A Quantitative Approach. Foods 2023; 12:foods12091828. [PMID: 37174366 PMCID: PMC10178770 DOI: 10.3390/foods12091828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/17/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
A novel solid-phase extraction methodology followed by UHPLC-MS/MS has been developed for Ochratoxin A (OTA) analysis in herbal infusions. For this purpose, a commercial polyurethane foam (PUF) was used as sorbent, and the experimental conditions were fully optimized. The strategy was satisfactory for reducing the matrix effect and allowed for OTA quantification in black tea and herbal infusions, with suitable recoveries and quantitation limits in agreement with those required by the maximum levels allowed by current regulations. The achieved results demonstrated the unprecedented use of polyurethane foam as an effective alternative for OTA retention and quantification in herbal infusions with the advantages of simple preparation, time saving, sustainability, and low cost for routine analysis.
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Affiliation(s)
- María Del Valle Ponce
- Instituto de Química de San Luis (INQUISAL-CONICET-UNSL), Laboratorio de Espectrometría de Masas, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Bloque III, Ejército de los Andes 950, San Luis 5700, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires 1033, Argentina
| | - Mariel Cina
- Instituto de Química de San Luis (INQUISAL-CONICET-UNSL), Laboratorio de Espectrometría de Masas, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Bloque III, Ejército de los Andes 950, San Luis 5700, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires 1033, Argentina
| | - Carlos López
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires 1033, Argentina
- Instituto de Investigaciones en Tecnología Química (INTEQUI-CONICET-UNSL), Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Almirante Brown 1455, San Luis 5700, Argentina
| | - Soledad Cerutti
- Instituto de Química de San Luis (INQUISAL-CONICET-UNSL), Laboratorio de Espectrometría de Masas, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Bloque III, Ejército de los Andes 950, San Luis 5700, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires 1033, Argentina
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8
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Indigenous Yeasts from Rose Oil Distillation Wastewater and Their Capacity for Biotransformation of Phenolics. Microorganisms 2023; 11:microorganisms11010201. [PMID: 36677493 PMCID: PMC9865748 DOI: 10.3390/microorganisms11010201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
The indigenous yeasts associated with the spontaneous fermentation of phenolic-rich rose oil distillation wastewater (RODW) generated after the industrial distillation of rose oil were studied. The ITS-rDNA sequence analysis of the samples collected from RODW fermented at semi-sterile conditions, a waste deposition lagoon and endophytic yeasts isolated from industrially cultivated Rosa damascena suggests that the spontaneous RODW fermentation is caused by yeasts from the genus Cyberlindnera found also as endophytes in the rose flowers. Phylogenetic analysis based on the nucleotide sequences of the translation elongation factor (TEF1α) and 18S- and 26S- rRNA genes further confirmed the taxonomic affiliation of the RODW yeast isolates with the genus Cyberlindnera. The RODW fermentation capacity of a selected set of indigenous yeast isolates was studied and compared with those of common yeast strains. The indigenous yeast isolates demonstrated a superior growth rate, resulting in a nearly double reduction in the phenolic content in the fermented RODW. The indigenous yeasts' fermentation changed the RODW phenolics' composition. The levels of some particular phenolic glycosides decreased through the depletion and fermentation of their sugar moiety. Hence, the relative abundance of the corresponding aglycons and other phenolic compounds increased. The capacity for the biotransformation of RODW phenolics by indigenous yeasts is discussed.
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9
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Determination of four aflatoxins on dark tea infusions and aflatoxin transfers evaluation during tea brewing. Food Chem 2022; 405:134969. [DOI: 10.1016/j.foodchem.2022.134969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/25/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
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