Evaluation of Long-Term Migration Testing from Can Coatings into Food Simulants: Polyester Coatings

Paseiro-Cerrato, Rafael; Noonan, Gregory O.; Begley, Timothy H.

doi:10.1021/acs.jafc.5b05880

Cited by 39 publications

(34 citation statements)

References 13 publications

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“…This work is further evidenced by Oldring et al who worked on a model to estimate BPA-diglycidyl ether exposure, concluding that exposure for UK consumers was well below the tolerable daily intake for all derivatives. 17 With BPA non-intent (BPANI), migration studies have been carried out on coatings of similar chemistry, 18,19 as is common with all new coating formulations, with a multitude of analytical techniques used such as gas chromatography and mass spectrometry. 20 While these methods of interaction are relatively well reported, the effect of the simulant solution/foodstuff on the adhesion of a coating to the substrate, or the substrate itself post-retort, has not been reported in depth.…”

Section: Manymentioning

confidence: 99%

Food packaging simulant failure mechanisms in next generation steel packaging

et al. 2019

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Legislative pressures have led to the mature dominant chromium-coated steel (ECCS) substrate and epoxy phenolic lacquer replacement in Europe. An investigation was carried out to examine the interaction between a steel surface engineered with a novel, developmental substrate coated using Cr (III)-based electrolytes and the food stuff being canned. Samples of lacquered material were subjected to a typical retort process (121°C for 90 minutes) and examined using a variety of laboratory analytical techniques. The foodstuff being packaged has a significant impact on the substrate/lacquer adhesion with clear differences in failure mechanisms between foodstuffs. There is clear evidence of chemical species transfer through the next generation lacquer, and this can instigate corrosion at the surface where incomplete chromium coverage leads to exposed iron. In general, the novel developmental material exhibits lower adhesive properties and shows a greater sensitivity to the foodstuff, although this is largely attributed to the homogeneity of the coverage. The novel substrate proves to be a promising alternative to ECCS due to REACH legislation, but improvement is required to achieve equivalent performance.

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Section: Manymentioning

confidence: 99%

Food packaging simulant failure mechanisms in next generation steel packaging

et al. 2019

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“…Polyesters have been proven commercially as BPA non-intent (BPANI) 1 3 alternatives to traditional coatings for food contact application, and are in use, as are other chemistries. As with all developments in coatings of this nature, migration studies have also been conducted on polyester coatings, showing little risk [18].…”

Section: Introductionmentioning

confidence: 99%

Inter-layer Adhesion Performance of Steel Packaging Materials for Food Cans Under Retort Conditions

Allman

Jewell

Vooys

et al. 2018

J Package Technol Res

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The steel packaging industry faces the dual challenge imposed by legislation to eradicate the use of Chrome(VI) from substrate manufacture and the removal of Bisphenol-A (BPA) from the organic lacquer at the point of food contact. The paper reports on an experimental investigation into the quality of adhesion between the coatings and substrates as a result of the retort process, typically the harshest conditions to which the materials will be exposed. In terms of adhesion, the novel Chrome(III) substrates show promise when compared with current Chrome(VI) substrate. There is a significant reduction in the adhesion of the polyester-based Bisphenol-A non-intent lacquers compared to the incumbent epoxy-phenolic lacquers. Adhesion performance is lower with an increase in retort temperature and time of exposure. The adhesion further reduces in mild acidic and saline conditions. The reduction in adhesion post-retort is attributed to the sensitivity of the polyester-based BPANI lacquers to water vapour absorption. The process reversible nature of the adhesion loss indicates that, at short timescales, the adhesion loss is a result of polyester hydrolysis. Acidic and saline solutions also lead to a reduction in adhesion as a result of metal surface corrosion. The paper has impact on producers, fillers and consumers of steel packaging foodstuffs.

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“…Besides, DART-HRMS gives very similar results to those obtained by conventional techniques for detection of unknowns in minutes, which involves a considerable progress in development of potential migrant identification strategies. Identified substances in this work are currently being used to monitor the migration process from polyester can coatings into food simulants[32] and foodstuff.…”

mentioning

confidence: 99%

Identification of unknown compounds from polyester cans coatings that may potentially migrate into food or food simulants

Paseiro-Cerrato

MacMahon

Ridge

et al. 2016

Journal of Chromatography A

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Cross-linked polyester resins are being introduced into the market as alternatives to epoxy resins as coatings for metal food cans. Identification of potential migrants, from these coatings into food, is a significant analytical challenge due to the diversity of substances employed in the manufacture of the coatings. However, such identification is required to assess migration from the can coating into the food and quantify dietary exposure. Polyester can coatings were extracted with acetonitrile at 40°C for 24h and the extracts were analyzed by a variety of analytical techniques, including GC-MS, HPLC-DAD/MS, HPLC-DAD/CAD and UHPL C-HRMS. Twenty nine non-volatile oligomers were tentatively identified using retention times, UV spectra, and accurate mass measurements. Identified oligomers suggest the coating in use for food cans is a polyester coating and is mainly based on the monomers isophthalic acid, terephthalic acid and nadic acid. To give confidence in the identification, one of the tentatively identified oligomer was synthetized and analyzed by (13)C and (1)H NMR and UHPL C-HRMS. The NMR and HRMS results, confirmed the presence of this compound in the can extracts. Finally, to determine if rapid, direct detection of the oligomers was practical, the coatings were analyzed by DART-HRMS. Twenty three out of the 29 oligomers were identified in the coating by direct measurement with DART-HRMS in few minutes.

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Evaluation of Long-Term Migration Testing from Can Coatings into Food Simulants: Polyester Coatings

Cited by 39 publications

References 13 publications

Food packaging simulant failure mechanisms in next generation steel packaging

Food packaging simulant failure mechanisms in next generation steel packaging

Inter-layer Adhesion Performance of Steel Packaging Materials for Food Cans Under Retort Conditions

Identification of unknown compounds from polyester cans coatings that may potentially migrate into food or food simulants

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