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Bauwens G, Purcaro G. Improved microwave-assisted saponification to reduce the variability of MOAH determination in edible oils. Anal Chim Acta 2024; 1312:342788. [PMID: 38834273 DOI: 10.1016/j.aca.2024.342788] [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: 03/21/2024] [Revised: 05/17/2024] [Accepted: 05/24/2024] [Indexed: 06/06/2024]
Abstract
BACKGROUND Mineral oil aromatic hydrocarbon (MOAH) analysis in foods is a major analytical challenge. Quantification is associated with a high uncertainty. The sources of uncertainty are multiple, but the major one is related to data interpretation and integration, which is partially derived from insufficiently efficient sample preparation. Recently, an updated ISO method for the analysis of mineral oil in fats and oils and a standard operating procedure for infant formula analysis have been published. Both methods reported significantly different (up to 1.25) distributions of the internal standards used for quantification (i.e., tri-tert-butyl benzene (TBB) and 2-methyl naphthalene (2-MN)) over the different solvent phases used in the saponification step. RESULTS In this work, a microwave-assisted saponification and extraction method was optimized for MOAH analysis to solve the problem related to the MOAH internal standards partition. The paper examines the impact of the solvent mixture used, the concentration of KOH on the partition of TBB and 2-MN, and the effect of the matrix and the washing step to extract the unsaponifiable fraction containing the mineral oils. SIGNIFICANCE The optimized procedure achieved a TBB/2-MN ratio of 1.05 ± 0.01 tested in five different fats and oils, namely, sunflower, rapeseed, coconut, palm, and extra virgin olive oils. The method can significantly contribute to reducing the uncertainty of the MOAH quantification when saponification is applied.
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Affiliation(s)
- Grégory Bauwens
- 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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Bauwens G, Cavaco Soares A, Lacoste F, Ribera D, Blomsma C, Berg I, Campos F, Coenradie A, Creanga A, Zwagerman R, Purcaro G. Investigation of the effect of refining on the presence of targeted mineral oil aromatic hydrocarbons in coconut oil. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:392-403. [PMID: 36608113 DOI: 10.1080/19440049.2022.2164621] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The goal of this work was to investigate the impact of refining on coconut oil particularly on the most toxicologically relevant fraction of the mineral oil aromatic hydrocarbon (MOAH) contamination, namely the fraction composed by the three to seven aromatic rings. A fully integrated platform consisting of a liquid chromatography (LC), a comprehensive multidimensional gas chromatography (GC) (LC-GC × GC) and flame ionization detector (FID) was used to obtained a more detailed characterization of the MOAH sub-classes distribution. The revised EN pr 16995:2017-08 official method was used for preparing the samples, both with and without the auxiliary epoxidation step. Crude coconut oil was spiked with different MOAH standards, namely naphthalenes, alkylated naphthalenes, benzo(a)pyrene, and its alkylated homologues. Refining was modelled by deodorization at 230 °C, stripping with 10 kg/h of steam under 1 mbar vacuum for 3 h. Complete removal of the naphthalenes and reduction of more than 98.8% of the benzo(a)pyrenes was observed. Epoxidation had a significant impact on the MOAH fraction with more than three rings, but with a high dependency on the sample matrix, being significantly less evident in the refined samples than in the crude ones.
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Affiliation(s)
- Grégory Bauwens
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | | | | | | | - Coen Blomsma
- VERNOF, Association of the Dutch manufacturers of edible oils and fats, Zoetermeer, The Netherlands
| | - Iekje Berg
- Sime Darby Oils, Zwijndrecht, The Netherlands
| | - Fernando Campos
- Archer Daniels Midland Company, ADM Hamburg AG - Research, Hamburg, Germany
| | | | | | | | - Giorgia Purcaro
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
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Jaén J, Domeño C, Nerín C. Development of an analytical method for the determination of mineral oil aromatic hydrocarbons (MOAH) from printing inks in food packaging. Food Chem 2022; 397:133745. [DOI: 10.1016/j.foodchem.2022.133745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/05/2022] [Accepted: 07/17/2022] [Indexed: 01/18/2023]
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QUANTIFICATION AND CHARACTERIZATION OF MINERAL OIL IN FISH FEED BY LIQUID CHROMATOGRAPHY-GAS CHROMATOGRAPHY-FLAME IONIZATION DETECTOR AND LIQUID CHROMATOGRAPHY-COMPREHENSIVE MULTIDIMENSIONAL GAS CHROMATOGRAPHY-TIME-OF-FLIGHT MASS SPECTROMETER/FLAME IONIZATION DETECTOR. J Chromatogr A 2022; 1677:463208. [DOI: 10.1016/j.chroma.2022.463208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 11/19/2022]
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Srbinovska A, Conchione C, Lucci P, Moret S. On-Line HP(LC)-GC-FID Determination of Hydrocarbon Contaminants in Fresh and Packaged Fish and Fish Products. J AOAC Int 2021; 104:267-273. [PMID: 33398342 DOI: 10.1093/jaoacint/qsaa144] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/28/2020] [Accepted: 10/11/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Fish products can be contaminated with mineral oil hydrocarbons (MOH), mainly as a result of environmental contamination (wild fish) or contaminated feeds (farmed fish). Packaged products may also be contaminated with polyolefin oligomeric hydrocarbons (POH), which, depending on the packaging, storage condition, matrix composition, and fat content, may migrate relatively easily from the packaging to the food. OBJECTIVE A rapid, solvent-sparing method for determining hydrocarbon contaminants in fish products was developed, validated, and applied to farmed and wild fish products (both fresh and packaged samples, stored under different conditions). METHOD Microwave-assisted saponification (MAS) was used in combination with on-line LC-GC-flame ionization detection (FID). RESULTS The proposed method showed quantitative recovery, good repeatability, and high sensitivity. Farmed salmon had variable mineral oil saturated hydrocarbon contamination (from 0.5 to 4.3 mg/kg), accompanied by mineral oil aromatic hydrocarbons (maximum 1.4 mg/kg), while wild salmons had no detectable contamination. Samples of one farmed salmon and a swordfish, both sliced and packed under vacuum, resulted contaminated with POH migrated from the packaging. POH migration was also evident in a ready-to-eat meal. CONCLUSIONS The proposed method showed good performance characteristics in terms of recovery, repeatability, and LOQ. Fatty fish products are more prone to contamination with hydrocarbon contaminants. HIGHLIGHTS MAS allows for rapid and efficient sample preparation. An LC-GC-FID method for MOH/POH determination in fish products was validated. Fish products may be contaminated with variable amounts of hydrocarbon contaminants.
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Affiliation(s)
- Ana Srbinovska
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Italy
| | - Chiara Conchione
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Italy
| | - Paolo Lucci
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Italy
| | - Sabrina Moret
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Italy
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Jaén J, Domeño C, Alfaro P, Nerín C. Atmospheric Solids Analysis Probe (ASAP) and Atmospheric Pressure Gas Chromatography (APGC) coupled to Quadrupole Time of Flight Mass Spectrometry (QTOF-MS) as alternative techniques to trace aromatic markers of mineral oils in food packaging. Talanta 2021; 227:122079. [PMID: 33714477 DOI: 10.1016/j.talanta.2020.122079] [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: 10/27/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 11/17/2022]
Abstract
The aim of this work was to select and identify the best markers of aromatic hydrocarbon mineral oil (MOAH) in food packaging. For this purpose, a series of mineral oils was initially analysed. Polycyclic Aromatic Hydrocarbons (PAHs) and the alkylated isomers of Methylnaphthalene (MNS), Diisopropylnaphtalene (DIPNs), Dibenzothiophenes (DBTS), Methyldibenzothiophene (MDBTs), Dimethyldibenzothiophenes (DMDBTs) and Benzonaphthiophenes (BNTS) were then explored. Their presence was confirmed by direct analysis of several mineral oils by Atmospheric Solids Analysis Probe Quadrupole-Time of Flight Mass Spectrometry (ASAP-QTOF-MS). Atmospheric Pressure Gas Chromatography Quadrupole-Time of Flight Mass Spectrometry (APGC-QTOF-MS) was used to confirm the markers in different samples of oils, recycled PET (rPET), recycled cardboard and packaging of couscous and semolina to confirm the contamination. 27 markers were found in the mineral oil samples, 22 of them in rPET, 8 in recycled board and no MOAH were found in packaging of couscous and semolina.
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Affiliation(s)
- Janira Jaén
- Instituto de Investigación en Ingeniería de Aragón (I3A), Depto. Química Analítica, EINA, Universidad de Zaragoza, María de Luna 3, 50018, Zaragoza, Spain
| | - Celia Domeño
- Instituto de Investigación en Ingeniería de Aragón (I3A), Depto. Química Analítica, EINA, Universidad de Zaragoza, María de Luna 3, 50018, Zaragoza, Spain
| | - Pilar Alfaro
- Instituto de Investigación en Ingeniería de Aragón (I3A), Depto. Química Analítica, EINA, Universidad de Zaragoza, María de Luna 3, 50018, Zaragoza, Spain
| | - Cristina Nerín
- Instituto de Investigación en Ingeniería de Aragón (I3A), Depto. Química Analítica, EINA, Universidad de Zaragoza, María de Luna 3, 50018, Zaragoza, Spain.
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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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Srbinovska A, Conchione C, Menegoz Ursol L, Lucci P, Moret S. Occurrence of n-Alkanes in Vegetable Oils and Their Analytical Determination. Foods 2020; 9:E1546. [PMID: 33114601 PMCID: PMC7694132 DOI: 10.3390/foods9111546] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022] Open
Abstract
Vegetable oils contain endogenous linear hydrocarbons, namely n-alkanes, ranging from n-C21 to n-C35, with odd chain lengths prevalent. Different vegetable oils, as well as oils of the same type, but of different variety and provenience, show typical n-alkane patterns, which could be used as a fingerprint to characterize them. In the first part of this review, data on the occurrence of n-alkanes in different vegetable oils (total and predominant n-alkanes) are given, with a focus on obtaining information regarding variety and geographical origin. The second part aims to provide the state of the art on available analytical methods for their determination. In particular, a detailed description of the sample preparation protocols and analytical determination is reported, pointing out the main drawbacks of traditional sample preparation and possible solutions to implement the analysis with the aim to shift toward rapid and solvent-sparing methods.
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Affiliation(s)
- Ana Srbinovska
- Department of Agri-Food, Environmental and Animal Sciences, University of Udine, 33100 Udine, Italy; (C.C.); (L.M.U.); (P.L.); (S.M.)
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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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Supercritical fluid chromatography as a rapid single-step method for the determination of mineral oil saturated and aromatic hydrocarbons in purified mineral oils for food and cosmetics applications. J Chromatogr A 2020; 1614:460713. [PMID: 31761438 DOI: 10.1016/j.chroma.2019.460713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/11/2019] [Accepted: 11/14/2019] [Indexed: 11/21/2022]
Abstract
Mineral oil hydrocarbons are used in the consumer goods sector for the elaboration of a wide range of foods and cosmetics. Traditional methods for determining their levels and composition are time consuming and laborious, besides requiring complex instrumentation. Here a simple and fast method was developed that uses columns packed with silver-modified silica in supercritical fluid chromatography with flame ionization and UV detection (SFC-FID/UV) for the determination of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH) in purified mineral oil samples. The method requires no sample preparation apart from dilution. Direct quantification of MOSH and MOAH was possible for samples with MOSH/MOAH ratios around one. For other samples deconvolution of the MOSH and MOAH humps in the FID chromatogram using the UV signal was needed since baseline separation of the two fractions could not be obtained. Validation of the method performance showed an excellent linearity (R2 > 0.9995) in the range of concentrations tested (2.5-100 mgmL-1) and a better repeatability than the standard methods (<5%). MOAH detection limits were better than 0.36% MOAH, which makes the method sufficiently sensitive for analysis of all but the highest purity mineral oils. The proposed SFC-FID/UV method was suitable for the analysis of mineral oils with viscosities and molecular weights below approximately 56 mm2s-1 and 450 gmol-1. The quantitative results of the new method were not statistically significantly different from those obtained with the standard SPE-GC-FID method where the new method has the advantages of a better repeatability, simpler operation and a significantly shortened analysis time. This new method could potentially also be used for the analysis of mineral oil contaminations in consumer products such as foods. However, in this case additional sample clean-up and preconcentration steps are needed for reducing matrix interferences from e.g. triglycerides and olefins and for improving the detection limits.
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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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Wagner M, Oellig C. Screening for mineral oil saturated and aromatic hydrocarbons in paper and cardboard directly by planar solid phase extraction and by its coupling to gas chromatography. J Chromatogr A 2019; 1588:48-57. [DOI: 10.1016/j.chroma.2018.12.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/14/2018] [Accepted: 12/19/2018] [Indexed: 10/27/2022]
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Weber S, Schrag K, Mildau G, Kuballa T, Walch SG, Lachenmeier DW. Analytical Methods for the Determination of Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH)-A Short Review. ANALYTICAL CHEMISTRY INSIGHTS 2018; 13:1177390118777757. [PMID: 29887729 PMCID: PMC5989051 DOI: 10.1177/1177390118777757] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/19/2018] [Indexed: 01/18/2023]
Abstract
Mineral oils (such as paraffinum liquidum or white oil), which consist of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH), are widely applied in various consumer products such as medicines and cosmetics. Contamination of food with mineral oil may occur by migration of mineral oil containing products from packaging materials, or during the food production process, as well as by environmental contamination during agricultural production. Considerable analytical interest was initiated by the potential adverse health effects, especially carcinogenic effects of some aromatic hydrocarbons. This article reviews the history of mineral oil analysis, starting with gravimetric and photometric methods, followed by on-line-coupled liquid chromatography with gas chromatography and flame ionization detection (LC-GC-FID), which still is considered as gold standard for MOSH-MOAH analysis. Comprehensive tables of applications in the fields of cosmetics, foods, food contact materials, and living organisms are provided. Further methods including GCxGC-MS methods are reviewed, which may be suitable for confirmation of LC-GC-FID results and identification of compound classes. As alternative to chromatography, nuclear magnetic resonance (NMR) spectroscopy has recently been suggested for MOSH-MOAH analysis, especially with the possibility of detecting only the toxicologically relevant aromatic rings. Furthermore, NMR may offer potential as rapid screening especially with low-field instruments usable for raw material control.
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Affiliation(s)
- Sandra Weber
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
| | - Karola Schrag
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
| | - Gerd Mildau
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
| | - Thomas Kuballa
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
| | - Stephan G Walch
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Karlsruhe, Germany
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Huang Z, Bi YJ, Sha YF, Xie WY, Wu D, Liu BZ. Separation and Analysis of Sucrose Esters in Tobacco by Online Liquid Chromatography-Gas Chromatography/Mass Spectrometry. ANAL SCI 2018; 34:887-891. [PMID: 30101882 DOI: 10.2116/analsci.18p076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 03/23/2018] [Indexed: 11/23/2022]
Abstract
In this work, a strategy of in-series combination of ultrasound-assisted extraction and online LC-GC/MS was constructed for effective separation and analysis of sucrose esters in tobacco. Sucrose esters were first extracted by ultrasound-assisted extraction with high efficiency and easyhandling. Online LC-GC/MS was then applied for sucrose ester clean-up and analysis. To better evaluate the effectiveness of this strategy, we limited our focus to five groups of sucrose ester isomers. Each group differed in mass from the next by 14 Da. The obtained coefficient of the calibration curve was 0.9986. Limit of detection (LOD) and limit of quantitation (LOQ) were 0.05 and 0.16 μg/ mL, respectively. The recovery was above 90% and the reproducibility was below 4%. This strategy was subsequently applied to the comparison of relative amounts of five groups of sucrose esters extracted from three different parts of aromatic tobacco. The satisfactory performance indicated that this strategy has great prospect for the rapid and high-throughput analysis of sucrose esters in tobacco.
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Affiliation(s)
- Zhi Huang
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Yan-Jiu Bi
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Yun-Fei Sha
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Wen-Yan Xie
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Da Wu
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Bai-Zhan Liu
- Technical Center of Shanghai Tobacco Group Co. Ltd
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18
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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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19
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Gharbi I, Moret S, Chaari O, Issaoui M, Conte LS, Lucci P, Hammami M. Evaluation of hydrocarbon contaminants in olives and virgin olive oils from Tunisia. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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20
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Moret S, Scolaro M, Barp L, Purcaro G, Conte LS. Microwave assisted saponification (MAS) followed by on-line liquid chromatography (LC)–gas chromatography (GC) for high-throughput and high-sensitivity determination of mineral oil in different cereal-based foodstuffs. Food Chem 2016; 196:50-7. [DOI: 10.1016/j.foodchem.2015.09.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 08/31/2015] [Accepted: 09/10/2015] [Indexed: 10/23/2022]
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21
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Barp L, Suman M, Lambertini F, Moret S. Migration of selected hydrocarbon contaminants into dry semolina and egg pasta packed in direct contact with virgin paperboard and polypropylene film. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015. [DOI: 10.1080/19440049.2015.1075176] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Solid-phase microextraction with gas chromatography and mass spectrometry determination of benzo(a)pyrene in microcrystalline waxes used as food additives. J Sep Sci 2015; 38:1749-54. [DOI: 10.1002/jssc.201401246] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 11/07/2022]
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23
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Barp L, Suman M, Lambertini F, Moret S. Migration of selected hydrocarbon contaminants into dry pasta packaged in direct contact with recycled paperboard. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 32:271-83. [DOI: 10.1080/19440049.2014.999259] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Moret S, Scolaro M, Barp L, Purcaro G, Sander M, Conte LS. Optimisation of pressurised liquid extraction (PLE) for rapid and efficient extraction of superficial and total mineral oil contamination from dry foods. Food Chem 2014; 157:470-5. [DOI: 10.1016/j.foodchem.2014.02.071] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 01/17/2014] [Accepted: 02/17/2014] [Indexed: 11/27/2022]
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