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Hegedüs Z, Gömöri C, Varga M, Vágvölgyi C, Szekeres A. Separation of ochratoxins by centrifugal partition chromatography. J Chromatogr A 2024; 1724:464898. [PMID: 38669941 DOI: 10.1016/j.chroma.2024.464898] [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: 01/29/2024] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024]
Abstract
The present research work was dedicated to developing an efficient method based on liquid-liquid chromatography (centrifugal partition chromatography, CPC) applicable to routine purifications of ochratoxins (OT) from the liquid culture of the strain A. albertensis SZMC 2107. The crude extract contained numerous components in addition to OTA (90.1 %,) and OTB (1.1 %,) according to HPLC examinations. For the separation of OTs by CPC, several tertiary systems based on acetonitrile, acetone, and short-chain alcohols were examined to find the most applicable biphasic system. The hexane/i-propanol/water 35:15:50 system supplemented with 0.1 % acetic acid was found to be the most efficient for use in CPC separation. Using liquid-liquid instrumental separation, the two OTs, namely OTA (2.23 mg) and OTB (0.031 mg), were successfully isolated with 96.3 % and-72.8 % purity, respectively, from 1 L ferment broth. The identities and purities of the purified components were confirmed and the performance parameters of each separation step and the whole procedure were determined. The developed method could be used effectively to purify OTs for analytical or toxicological applications.
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Affiliation(s)
- Zsófia Hegedüs
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary; Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Csilla Gömöri
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary
| | - Mónika Varga
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary
| | - Csaba Vágvölgyi
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary
| | - András Szekeres
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary.
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Nam M, Kim D, Kim MS. Simultaneous determination of total ergot alkaloids in wheat flour by Orbitrap mass spectrometry. Food Chem 2024; 441:138363. [PMID: 38199100 DOI: 10.1016/j.foodchem.2024.138363] [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: 09/19/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
The optimization screening methods for total ergot alkaloids in wheat extracts involve transforming them into a single compound, which is then analyzed via high-resolution Orbitrap mass spectrometry (Orbitrap MS). Orbitrap MS provides highly sensitive and accurate mass measurements, enhancing the selectivity and sensitivity of the analysis. Various hydrolysis and reduction methods have been investigated, and the use of superhydrides has emerged as the most effective method for transforming ergopeptine alkaloids. This study also focused on the epimerization of ergot alkaloids, particularly the differences between R- and S-epimers and their impact on the mass spectra. We validated our method by assessing the linearity, sensitivity, recovery, matrix effects, repeatability, and stability. The limits of detection and quantitation were set at 0.43 and 1.30 μg LSA/kg wheat, respectively. The proposed method offers a robust analytical approach for screening and quantifying total ergot alkaloids in wheat samples, addressing important concerns about their presence in food and feed.
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Affiliation(s)
- Miso Nam
- Food Analysis Research Center, Korea Food Research Institute, Republic of Korea
| | - Danbi Kim
- Food Analysis Research Center, Korea Food Research Institute, Republic of Korea
| | - Min-Sun Kim
- Food Analysis Research Center, Korea Food Research Institute, Republic of Korea.
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Gwinn KD, Leung MCK, Stephens AB, Punja ZK. Fungal and mycotoxin contaminants in cannabis and hemp flowers: implications for consumer health and directions for further research. Front Microbiol 2023; 14:1278189. [PMID: 37928692 PMCID: PMC10620813 DOI: 10.3389/fmicb.2023.1278189] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/04/2023] [Indexed: 11/07/2023] Open
Abstract
Medicinal and recreational uses of Cannabis sativa, commonly known as cannabis or hemp, has increased following its legalization in certain regions of the world. Cannabis and hemp plants interact with a community of microbes (i.e., the phytobiome), which can influence various aspects of the host plant. The fungal composition of the C. sativa phytobiome (i.e., mycobiome) currently consists of over 100 species of fungi, which includes phytopathogens, epiphytes, and endophytes, This mycobiome has often been understudied in research aimed at evaluating the safety of cannabis products for humans. Medical research has historically focused instead on substance use and medicinal uses of the plant. Because several components of the mycobiome are reported to produce toxic secondary metabolites (i.e., mycotoxins) that can potentially affect the health of humans and animals and initiate opportunistic infections in immunocompromised patients, there is a need to determine the potential health risks that these contaminants could pose for consumers. This review discusses the mycobiome of cannabis and hemp flowers with a focus on plant-infecting and toxigenic fungi that are most commonly found and are of potential concern (e.g., Aspergillus, Penicillium, Fusarium, and Mucor spp.). We review current regulations for molds and mycotoxins worldwide and review assessment methods including culture-based assays, liquid chromatography, immuno-based technologies, and emerging technologies for these contaminants. We also discuss approaches to reduce fungal contaminants on cannabis and hemp and identify future research needs for contaminant detection, data dissemination, and management approaches. These approaches are designed to yield safer products for all consumers.
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Affiliation(s)
- Kimberly D. Gwinn
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - Maxwell C. K. Leung
- School of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ, United States
| | - Ariell B. Stephens
- School of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ, United States
| | - Zamir K. Punja
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada
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Jimenez-Carvelo AM, López-Ruiz R, Romero-González R, Garrido-Frenich A. Critical evaluation of MS acquisition conditions and identification process in LC-Q-Orbitrap-MS for non-targeted analysis: pesticide residues as case of study. Anal Bioanal Chem 2023; 415:6269-6277. [PMID: 37572212 DOI: 10.1007/s00216-023-04903-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/26/2023] [Accepted: 08/02/2023] [Indexed: 08/14/2023]
Abstract
In routine measurements, the length of analysis time and the number of samples analysed during a given time unit are crucial. Additionally, the analytical method used has to provide reliable results and be able to identify and quantify any compound present in the matrix. High-resolution equipment, including Orbitrap analysers, is commonly used for non-targeted determinations. However, researchers still rely on trial and error to achieve the best acquisition conditions on the mass spectrometer, which is a tedious and time-consuming process that can lead to errors. Moreover, tentative compound identification, particularly when using a non-targeted approach, heavily depends on commercial databases. All of these issues can ultimately result in incomplete identification of compounds in the study matrix. In this framework, the study presented here has a dual objective: to use the experimental design tool to optimise critical parameters in mass spectrometry using LC-Q-Orbitrap-MS equipment when working in a non-targeted approach and to compare the mzCloud™ and ChemSpider™ commercial databases included in Compound Discoverer software with TraceFinder home-made databases generated to evaluate the ability to identify compounds. The study's noteworthy findings reveal that employing an experimental design has facilitated rapid optimisation of the mass spectrometer's multiplexing and loop parameters. Furthermore, the study highlights that the lack of harmonisation in commercial databases poses a disadvantage in the identification of compounds, leading to superior results when using home-made databases. In the latter databases, around 80% of the compounds were identified, which is approximately twice the number identified in commercial databases (around 40% in the best case with ChemSpider™).
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Affiliation(s)
- Ana M Jimenez-Carvelo
- Department of Analytical Chemistry, University of Granada, Granada, Spain
- Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), Agri-Food International Campus of Excellence (CeiA3), University of Almeria, Almeria, Spain
| | - Rosalía López-Ruiz
- Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), Agri-Food International Campus of Excellence (CeiA3), University of Almeria, Almeria, Spain.
| | - Roberto Romero-González
- Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), Agri-Food International Campus of Excellence (CeiA3), University of Almeria, Almeria, Spain
| | - Antonia Garrido-Frenich
- Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), Agri-Food International Campus of Excellence (CeiA3), University of Almeria, Almeria, Spain
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Meneely J, Greer B, Kolawole O, Elliott C. T-2 and HT-2 Toxins: Toxicity, Occurrence and Analysis: A Review. Toxins (Basel) 2023; 15:481. [PMID: 37624238 PMCID: PMC10467144 DOI: 10.3390/toxins15080481] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/11/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
One of the major classes of mycotoxins posing serious hazards to humans and animals and potentially causing severe economic impact to the cereal industry are the trichothecenes, produced by many fungal genera. As such, indicative limits for the sum of T-2 and HT-2 were introduced in the European Union in 2013 and discussions are ongoing as to the establishment of maximum levels. This review provides a concise assessment of the existing understanding concerning the toxicological effects of T-2 and HT-2 in humans and animals, their biosynthetic pathways, occurrence, impact of climate change on their production and an evaluation of the analytical methods applied to their detection. This study highlights that the ecology of F. sporotrichioides and F. langsethiae as well as the influence of interacting environmental factors on their growth and activation of biosynthetic genes are still not fully understood. Predictive models of Fusarium growth and subsequent mycotoxin production would be beneficial in predicting the risk of contamination and thus aid early mitigation. With the likelihood of regulatory maximum limits being introduced, increased surveillance using rapid, on-site tests in addition to confirmatory methods will be required. allowing the industry to be proactive rather than reactive.
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Affiliation(s)
- Julie Meneely
- Institute for Global Food Security, National Measurement Laboratory: Centre of Excellence in Agriculture and Food Integrity, Queen’s University Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, UK; (B.G.); (O.K.); (C.E.)
- The International Joint Research Center on Food Security (IJC-FOODSEC), 113 Thailand Science Park, Pahonyothin Road, Khong Luang 12120, Thailand
| | - Brett Greer
- Institute for Global Food Security, National Measurement Laboratory: Centre of Excellence in Agriculture and Food Integrity, Queen’s University Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, UK; (B.G.); (O.K.); (C.E.)
- The International Joint Research Center on Food Security (IJC-FOODSEC), 113 Thailand Science Park, Pahonyothin Road, Khong Luang 12120, Thailand
| | - Oluwatobi Kolawole
- Institute for Global Food Security, National Measurement Laboratory: Centre of Excellence in Agriculture and Food Integrity, Queen’s University Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, UK; (B.G.); (O.K.); (C.E.)
- The International Joint Research Center on Food Security (IJC-FOODSEC), 113 Thailand Science Park, Pahonyothin Road, Khong Luang 12120, Thailand
| | - Christopher Elliott
- Institute for Global Food Security, National Measurement Laboratory: Centre of Excellence in Agriculture and Food Integrity, Queen’s University Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, UK; (B.G.); (O.K.); (C.E.)
- The International Joint Research Center on Food Security (IJC-FOODSEC), 113 Thailand Science Park, Pahonyothin Road, Khong Luang 12120, Thailand
- School of Food Science and Technology, Faculty of Science and Technology, Thammasat University, 99 Mhu 18, Pahonyothin Road, Khong Luang 12120, Thailand
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