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Berger S, Oesterle I, Ayeni KI, Ezekiel CN, Rompel A, Warth B. Polyphenol exposure of mothers and infants assessed by LC-MS/MS based biomonitoring in breast milk. Anal Bioanal Chem 2024; 416:1759-1774. [PMID: 38363307 PMCID: PMC10899372 DOI: 10.1007/s00216-024-05179-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 02/17/2024]
Abstract
Exposure to polyphenols is relevant throughout critical windows of infant development, including the breastfeeding phase. However, the quantitative assessment of polyphenols in human breast milk has received limited attention so far, though polyphenols may positively influence infant health. Therefore, a targeted LC-MS/MS assay was developed to investigate 86 analytes representing different polyphenol classes in human breast milk. The sample preparation consisted of liquid extraction, salting out, freeze-out, and a dilution step. Overall, nearly 70% of the chemically diverse polyphenols fulfilled all strict validation criteria for full quantitative assessment. The remaining analytes did not fulfill all criteria at every concentration level, but can still provide useful semi-quantitative insights into nutritional and biomedical research questions. The limits of detection for all analyzed polyphenols were in the range of 0.0041-87 ng*mL-1, with a median of 0.17 ng*mL-1. Moreover, the mean recovery was determined to be 82% and the mean signal suppression and enhancement effect was 117%. The developed assay was applied in a proof-of-principle study to investigate polyphenols in breast milk samples provided by twelve Nigerian mothers at three distinct time points post-delivery. In total, 50 polyphenol analytes were detected with almost half being phenolic acids. Phase II metabolites, including genistein-7-β-D-glucuronide, genistein-7-sulfate, and daidzein-7-β-D-glucuronide, were also detected in several samples. In conclusion, the developed method was demonstrated to be fit-for-purpose to simultaneously (semi-) quantify a wide variety of polyphenols in breast milk. It also demonstrated that various polyphenols including their biotransformation products were present in breast milk and therefore likely transferred to infants where they might impact microbiome development and infant health.
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Affiliation(s)
- Sabrina Berger
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, 1090, Vienna, Austria
| | - Ian Oesterle
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, 1090, Vienna, Austria
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, 1090, Wien, Austria
- Vienna Doctoral School of Chemistry (DoSChem), University of Vienna, 1090, Vienna, Austria
| | - Kolawole I Ayeni
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, 1090, Vienna, Austria
- Department of Microbiology, Babcock University, Ilishan-Remo, Ogun State, Nigeria
| | - Chibundu N Ezekiel
- Institute for Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad-Lorenz Str. 20, 3430, Tulln, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, 1090, Wien, Austria
| | - Benedikt Warth
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, 1090, Vienna, Austria.
- Exposome Austria, Research Infrastructure and National EIRENE Node, Vienna, Austria.
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A Rapid Immunochromatographic Method Based on Gold Nanoparticles for the Determination of Imidacloprid on Fruits and Vegetables. Foods 2023; 12:foods12030512. [PMID: 36766041 PMCID: PMC9914284 DOI: 10.3390/foods12030512] [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: 12/20/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023] Open
Abstract
Imidacloprid (IMP) is toxic and a potential carcinogen that is most widely used as an insecticide for pest control and seed treatment. It is important to produce a rapid and sensitive assay for on-site monitoring. We have developed a novel lateral flow assay (LFA) using a sensitive monoclonal antibody (mAb) for monitoring IMP residues on fruits and vegetables. The 50% inhibition concentration result that was found when using the ELISA method was 0.247 ng mL-1, with the cut-off limits using the LFA method the result was 10 ng mL-1 (0.01 M PBS), and in the samples it was 20 ng mL-1 (with a recovery rate of 96-104.7% for Chinese cabbage, cowpea, apple, and pear samples, respectively). All of the results can be determined within seven minutes. The proposed LFA method is a valid, quick, and stable assay for the on-site detection of IMP in large numbers of samples.
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A Modified QuEChERS-DART-MS/MS Technique for High-Throughput Detection of Organophosphate Nerve Agent Hydrolysis Products in Environmental Samples. JOURNAL OF ANALYSIS AND TESTING 2022. [DOI: 10.1007/s41664-022-00234-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Luo J, Li S, Pang C, Wang M, Ma X, Zhang C. Highly selective fluorescence probe for imidacloprid measurement based on fluorescence resonance energy transfer. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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