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Bauwens G, Gorska A, Purcaro G. The role of comprehensive two-dimensional gas chromatography in mineral oil determination. Anal Bioanal Chem 2023:10.1007/s00216-023-04718-3. [PMID: 37147559 DOI: 10.1007/s00216-023-04718-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/07/2023]
Abstract
Mineral oil hydrocarbons (MOH) contain a wide structural diversity of molecules, for which the reference method of analysis is the online coupled liquid chromatography-gas chromatography with flame ionization detection (LC-GC-FID). These compounds are very heterogeneous from a toxicological viewpoint, and an accurate risk assessment when dealing with a MOH contamination can only be performed if sufficient information is available on the types of structures present (i.e., number of carbons, degree of alkylation, number of aromatic rings). Unfortunately, the separation performances of the current LC-GC-FID method are insufficient for such characterization, not even mentioning the possible coelution of interfering compounds which additionally hinder MOH determination. Comprehensive two-dimensional gas chromatography (GC × GC), while mostly used for confirmation purposes in the past, starts to prove its relevance for overcoming the weaknesses of the LC-GC method and reaching even better the analytical requirements defined in the latest EFSA opinion. The present paper therefore aims at highlighting how GC × GC has contributed to the understanding of the MOH topic, how it has developed to meet the requirements of MOH determination, and how it could play a role in the field for overcoming many of the current analytical and toxicological challenges related to the topic.
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Affiliation(s)
- Grégory Bauwens
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Bât. G1 Chimie Des Agro-Biosystèmes, Passage Des Déportés 2, 5030, Gembloux, Belgium
| | - Aleksandra Gorska
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Bât. G1 Chimie Des Agro-Biosystèmes, Passage Des Déportés 2, 5030, Gembloux, Belgium
| | - Giorgia Purcaro
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Bât. G1 Chimie Des Agro-Biosystèmes, Passage Des Déportés 2, 5030, Gembloux, Belgium.
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2
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Review on chromatographic and specific detection methodologies for unravelling the complexity of MOAH in foods. Anal Chim Acta 2022; 1234:340098. [DOI: 10.1016/j.aca.2022.340098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 06/11/2022] [Accepted: 06/14/2022] [Indexed: 11/23/2022]
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3
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Wagner M, Oellig C. Screening for mineral oil hydrocarbons in vegetable oils by silver ion-planar solid phase extraction. J Chromatogr A 2021; 1662:462732. [PMID: 34910963 DOI: 10.1016/j.chroma.2021.462732] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 11/30/2022]
Abstract
The analysis of mineral oil hydrocarbons in vegetable oils is challenging especially regarding the analysis of mineral oil aromatic hydrocarbons (MOAH) since native terpenes like squalene or β-carotene are usually extracted along with the MOAH fraction and interfere their detection. When applying a recently developed screening method for the analysis of mineral oil saturated hydrocarbons (MOSH) and MOAH in paper and cardboard by planar solid phase extraction (pSPE) to vegetable oils, native terpenes expectably interfered with MOAH analysis. Thus, an adaption of pSPE employing silver ions, named silver ion-planar solid phase extraction (Ag-pSPE), was developed in this study. Impregnation of thin-layers with silver nitrate (AgNO3) was found to be very successful in retaining squalene and β-carotene. MOAH analysis of vegetable oils after saponification showed good repeatability (relative standard deviation (%RSD) <10%) and recoveries of 73.4-112.4% at a spiking level of 4.5 mg/kg (n = 4). For MOSH analysis, a simple solid phase extraction (SPE) clean-up with aluminum oxide removed native n-alkanes prior to Ag-pSPE. Recoveries for MOSH were 55.3-84.5% with %RSD <11% at a spiking level of 45.5 mg/kg (n = 4). Limits of decision and quantitation were at 7.2 and 22.2 ng/zone for MOSH and 1.1 and 3.4 ng/zone for MOAH, respectively, which corresponded to the recently introduced pSPE method, thus showing that analytes were not affected by the impregnation of HPTLC plates with AgNO3. The method comparison with LC-GC showed similar results for MOSH, while the amounts for MOAH determined by Ag-pSPE were higher.
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Affiliation(s)
- Melanie Wagner
- Department of Food Chemistry and Analytical Chemistry (170a), Institute of Food Chemistry, University of Hohenheim, Garbenstrasse 28, Stuttgart 70599, Germany
| | - Claudia Oellig
- Department of Food Chemistry and Analytical Chemistry (170a), Institute of Food Chemistry, University of Hohenheim, Garbenstrasse 28, Stuttgart 70599, Germany.
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4
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Hochegger A, Moret S, Geurts L, Gude T, Leitner E, Mertens B, O'Hagan S, Poças F, Simat TJ, Purcaro G. Mineral oil risk assessment: Knowledge gaps and roadmap. Outcome of a multi-stakeholders workshop. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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5
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Bauwens G, Pantó S, Purcaro G. Mineral oil saturated and aromatic hydrocarbons quantification: Mono- and two-dimensional approaches. J Chromatogr A 2021; 1643:462044. [PMID: 33744654 DOI: 10.1016/j.chroma.2021.462044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/03/2021] [Accepted: 03/03/2021] [Indexed: 10/22/2022]
Abstract
The determination of the level of mineral oil contamination in foods is a well-known problem. This class of contaminants is generally divided into mineral oil saturated and aromatic hydrocarbons with different toxicological relevance and analytical challenges. Among the many challenges, data interpretation and integration represent an important source of uncertainty in the results provided by different laboratories leading to a variation evaluated on the order of 20%. The use of multidimensional comprehensive gas chromatography (GC × GC) has been proposed to support the data interpretation but the integration and the reliability of the results using this methodology has never been systematically evaluated. The aim of this work was to assess the integration and quantification performance of a two-dimensional (2D) software. The data were generated using a novel, completely automated platform, namely LC-GC × GC coupled to dual detectors, i.e., time-of-flight mass spectrometer (MS) and flame ionization detector (FID). From a systematic study of the failures of the two-dimensional quantification approach a novel solution was proposed for simplifying and automating the entire process. The novel algorithm was tested on ad hoc created samples (i.e. a paraffin mixture added of n-alkanes) and real-world samples proving the agreement of the results obtained by LC-GC × GC and the traditional mono-dimensional approach. Moreover, the benefits of using an entirely integrated platform were emphasized, particularly regarding the identity confirmation capability of the MS data, which can be easily translated into the 2D FID quantification feature.
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Affiliation(s)
- Grégory Bauwens
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, 5030, Belgium
| | - Sebastiano Pantó
- LECO European Application and Technology Center (EATC), Berlin, Germany
| | - Giorgia Purcaro
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, 5030, Belgium.
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6
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Wolf N, Säger S, Lommatzsch M, Simat TJ. Analysis of volatile oxidized oligomers from polyolefins by off-line normal phase high performance liquid chromatography and one-dimensional and comprehensive two-dimensional gas chromatography. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Research Progress of Analysis of Mineral Oil Hydrocarbons using On-line High Performance Liquid Chromatography Coupled with Gas Chromatography. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/s1872-2040(21)60084-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sdrigotti N, Collard M, Purcaro G. Evolution of hyphenated techniques for mineral oil analysis in food. J Sep Sci 2020; 44:464-482. [DOI: 10.1002/jssc.202000901] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/04/2020] [Accepted: 10/26/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Nicola Sdrigotti
- Analytical Chemistry Lab Gembloux Agro‐Bio Tech University of Liège Gembloux 5030 Belgium
- Department of Agricultural Food, Environmental and Animal Sciences University of Udine Udine 33100 Italy
| | - Maurine Collard
- Analytical Chemistry Lab Gembloux Agro‐Bio Tech University of Liège Gembloux 5030 Belgium
| | - Giorgia Purcaro
- Analytical Chemistry Lab Gembloux Agro‐Bio Tech University of Liège Gembloux 5030 Belgium
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Conchione C, Lucci P, Moret S. Migration of Polypropylene Oligomers into Ready-to-Eat Vegetable Soups. Foods 2020; 9:E1365. [PMID: 32992980 PMCID: PMC7601618 DOI: 10.3390/foods9101365] [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: 09/02/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 11/19/2022] Open
Abstract
Polyolefin oligomeric hydrocarbons (POH) are non-intentionally added substances (NIAS) which mainly reside in the polymer (PE, PP) as a consequence of the polymerization process, and that under favorable conditions (high fat content, high temperature, and long contact time) may migrate at high amount from the packaging into the food. The food industry offers a wide range of ready-to-eat products, among these, vegetable soups designed to be stored at refrigeration temperature (for times around 6 weeks), and in most cases to be heated for a few minutes in a microwave oven (into the original container, mostly of PP) before consumption. The present work aimed to study for the first-time migration of POH during the shelf life of these products, including storage at refrigeration temperature and after microwave heating. On-line high-performance liquid chromatography (HPLC)-gas chromatography (GC), followed by flame ionization detection (FID), was applied for POH analysis in a number of ready-to-eat products purchased from the Italian market. Microwave heating determined a variable POH increase ranging from 0.1 to 6.2 mg/kg. Parameters possibly affecting migration such as fat content and heating time were also studied.
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Affiliation(s)
- Chiara Conchione
- Department of Agri-Food, Environmental and Animal Sciences, University of Udine, 33100 Udine, Italy; (P.L.); (S.M.)
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Biedermann M, Munoz C, Grob K. Epoxidation for the analysis of the mineral oil aromatic hydrocarbons in food. An update. J Chromatogr A 2020; 1624:461236. [PMID: 32540076 DOI: 10.1016/j.chroma.2020.461236] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/30/2020] [Accepted: 05/11/2020] [Indexed: 11/25/2022]
Abstract
On-line coupled high performance liquid chromatography-gas chromatography-flame ionization detection (HPLC-GC-FID) used for determining mineral oil aromatic hydrocarbons (MOAH) in foods, particularly in certain oils and fats, may be disturbed by interfering olefins present as natural food components or resulting from raffination of the oils and fats. While some interference can be coped with by disregarding their peaks, others overload GC to the extent of obscuring the MOAH or form humps which need to be distinguished from the hump formed by the MOAH. In the latter cases, it is necessary to remove these interferences prior to HPLC-GC analysis. So far, epoxidation of the olefins to increase their retention time beyond that of the MOAH in HPLC is the best method available, though imperfect by causing some loss of MOAH and sometimes incomplete removal of the interference. Two methods are re-evaluated; preference is given to a slightly modified version of that proposed by Nestola and Schmidt. The performances are comparable: the losses of MOAH are similar and with both methods not all interfering olefins may be removed from refined edible oils. However, the Nestola/Schmidt method has practical advantages, the main ones being that no cooling is necessary and no solvent needs to be evaporated, which facilitates automation. Potential residual interferences must be recognized and subtracted, which can be by the characteristics of the hump they form in HPLC-GC-FID, by GCxGC-FID or by GCxGC-MS using characteristic mass fragments.
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Affiliation(s)
- Maurus Biedermann
- Official Food Control Authority of the Canton of Zürich, PO Box, CH-8032 Zurich, Switzerland
| | - Celine Munoz
- Official Food Control Authority of the Canton of Zürich, PO Box, CH-8032 Zurich, Switzerland
| | - Koni Grob
- Official Food Control Authority of the Canton of Zürich, PO Box, CH-8032 Zurich, Switzerland.
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11
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García-Cicourel AR, van de Velde B, Verduin J, Janssen HG. Comprehensive off-line silver phase liquid chromatography × gas chromatography with flame ionization and vacuum ultraviolet detection for the detailed characterization of mineral oil aromatic hydrocarbons. J Chromatogr A 2019; 1607:460391. [DOI: 10.1016/j.chroma.2019.460391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 10/26/2022]
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Bevan R, Harrison PTC, Jeffery B, Mitchell D. Evaluating the risk to humans from mineral oils in foods: Current state of the evidence. Food Chem Toxicol 2019; 136:110966. [PMID: 31751646 DOI: 10.1016/j.fct.2019.110966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 11/10/2019] [Accepted: 11/11/2019] [Indexed: 10/25/2022]
Abstract
Key issues around the evaluation of risks to humans from mineral oils in food and feedstuffs are discussed. MOHs (MOAH and MOSH) occur in food due to intentional use, contamination from environmental sources and during transport/processing, or through migration from food contact materials. Problems in setting and enforcing human health guidelines for MOH include uncertainty around MOH toxicity and the specialist expertise needed for analysis of complex food matrices. Currently, the method of choice for measuring mineral oils is LC-GC-FID, however some complex food matrices also require additional analytical techniques to differentiate between some naturally occurring hydrocarbons and those from other sources, including of petrogenic origin. This requires the skills of an experienced analyst. Significant toxicological gaps for MOHs prevent robust human health risk assessment and the derivation of guidance values. As food-grade mineral oils are virtually MOAH-free, the key issue explored here is the relevance to humans of liver (micro)granulomas observed in F344 rats following oral intake. Available data suggest that despite the ubiquitous nature of MOH in the human diet, the prevalence of liver lipogranulomas in the population is low. These are not associated with inflammation and based on current evidence are not considered of human health significance.
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Affiliation(s)
- R Bevan
- IEH Consulting Ltd, Nottingham, UK.
| | | | - B Jeffery
- Mars Global Food Safety Center, Beijing, PR China
| | - D Mitchell
- Mars Global Food Safety Center, Beijing, PR China
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Arcella D, Baert K, Binaglia M. Rapid risk assessment on the possible risk for public health due to the contamination of infant formula and follow‐on formula by mineral oil aromatic hydrocarbons (MOAH). ACTA ACUST UNITED AC 2019. [DOI: 10.2903/sp.efsa.2019.en-1741] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Biedermann M, Munoz C, Grob K. Update of on-line coupled liquid chromatography – gas chromatography for the analysis of mineral oil hydrocarbons in foods and cosmetics. J Chromatogr A 2017; 1521:140-149. [DOI: 10.1016/j.chroma.2017.09.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/09/2017] [Accepted: 09/12/2017] [Indexed: 12/01/2022]
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15
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Nestola M, Schmidt TC. Determination of mineral oil aromatic hydrocarbons in edible oils and fats by online liquid chromatography–gas chromatography–flame ionization detection – Evaluation of automated removal strategies for biogenic olefins. J Chromatogr A 2017; 1505:69-76. [DOI: 10.1016/j.chroma.2017.05.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/26/2017] [Accepted: 05/13/2017] [Indexed: 11/16/2022]
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16
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Liu L, Huang H, Wu Y, Li B, Ouyang J. Offline Solid-phase Extraction Large-volume Injection-Gas chromatography for the Analysis of Mineral Oil-saturated Hydrocarbons in Commercial Vegetable Oils. J Oleo Sci 2017; 66:981-990. [DOI: 10.5650/jos.ess17081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lingling Liu
- Beijing Center for Physical and Chemical Analysis, Beijing Food Safety Analysis and Testing Engineering Research Center
| | - Hua Huang
- Beijing Center for Physical and Chemical Analysis, Beijing Food Safety Analysis and Testing Engineering Research Center
- Beijing Municipal Center for Food Safety Monitoring and Risk Assessment
| | - Yanwen Wu
- Beijing Center for Physical and Chemical Analysis, Beijing Food Safety Analysis and Testing Engineering Research Center
| | - Bingning Li
- Beijing Center for Physical and Chemical Analysis, Beijing Food Safety Analysis and Testing Engineering Research Center
| | - Jie Ouyang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University
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Lommatzsch M, Biedermann M, Grob K, Simat TJ. Analysis of saturated and aromatic hydrocarbons migrating from a polyolefin-based hot-melt adhesive into food. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:473-88. [DOI: 10.1080/19440049.2015.1130863] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Zoccali M, Barp L, Beccaria M, Sciarrone D, Purcaro G, Mondello L. Improvement of mineral oil saturated and aromatic hydrocarbons determination in edible oil by liquid-liquid-gas chromatography with dual detection. J Sep Sci 2015; 39:623-31. [DOI: 10.1002/jssc.201501247] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 11/19/2015] [Accepted: 11/19/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Mariosimone Zoccali
- “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
| | - Laura Barp
- “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
| | - Marco Beccaria
- “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
| | - Danilo Sciarrone
- “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
| | - Giorgia Purcaro
- Chromaleont s.r.l., c/o “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
| | - Luigi Mondello
- “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze chimiche, biologiche, farmaceutiche ed ambientali” Department; University of Messina; Messina Italy
- University Campus Bio-Medico of Rome; Roma Italy
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