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. 2020 Nov 12;17(22):8357. doi: 10.3390/ijerph17228357

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

SEM images acquired from (a) aluminum foil in its unused state; (b) aluminum foil used for baking beef without seasoning and taken from a portion which was in contact with the beef (Al-C-BNS: Al contact beef, no seasoning); (c) aluminum foil used for baking beef with seasoning and taken from a portion which was in contact with the beef (Al-C-BS: Al contact beef, with seasoning); (d) aluminum foil used for baking beef with seasoning and taken from a portion which was not in contact with the beef (Al-N-BS: Al no contact beef, with seasoning).