Nanocomposites of Food Antimicrobial Agents

Recently, nanocomposites consisting of inorganic nanolayers of layered silicate have evoked intense research interest to be used as antimicrobial carriers. Their applications have been exploring. The nanoclays with and without modification can be used as the nanofiller to prepare hybrid polymer nanocomposite material. These materials usually have improved mechanical, thermal, electrical, barrier, and optical properties and hence have the potential to be used in active antimicrobial food packaging applications. Montmorillonite nanoclay, consisting of two tetrahedral sheets of silica fused to an edge-shared octahedral sheet of alumina, was incorporated into alginate or chitosan and formed bio-nanocomposites with encapsulated essential oils (Alboofetileh et al., 2014; Abdollahi et al., 2012). The obtained nanocomposite films showed increased mechanical properties and antimicrobial activities. Carvacrol was employed in the methyl cellulose-based nanocomposites and produced a film with enhanced antimicrobial activity and a controlled release of carvacrol during storage (Tunc and Duman, 2011). The antimicrobial nanocomposites can also be deposited onto the material surface as an additional layer by various methods (Nikiforov et al., 2016).

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