title: Controlled release properties of zein-fatty acid blend films for multiple bioactive compounds.
abstract: To develop edible films having controlled release properties for multiple bioactive compounds, hydrophobicity and morphology of zein films were modified by blending zein with oleic (C18:1)Δ⁹, linoleic (C18:2)Δ(9,12), or lauric (C₁₂) acids in the presence of lecithin. The blend zein films showed 2-8.5- and 1.6-2.9-fold lower initial release rates for the model active compounds, lysozyme (LYS) and (+)-catechin (CAT), than the zein control films, respectively. The change of fatty acid chain length affected both CAT and LYS release rates while the change of fatty acid double bond number affected only the CAT release rate. The film morphologies suggested that the blend films owe their controlled release properties mainly to the microspheres formed within their matrix and encapsulation of active compounds. The blend films showed antilisterial activity and antioxidant activity up to 81 μmol Trolox/cm². The controlled release of multiple bioactive compounds from a single film showed the possibility of combining application of active and bioactive packaging technologies and improving not only safety and quality but also health benefits of packed food.
authors.affiliation: Department of Food Engineering, Faculty of Engineering, Izmir Institute of Technology , 35430, Gülbahçe Köyü, Urla, Izmir, Turkey.
authors.forename: Iskender
authors.initials: I
authors.lastname: Arcan
authors.forename: Ahmet
authors.initials: A
authors.lastname: Yemenicioğlu
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000378:metabolism; D000975:Antioxidants / Q000032:analysis / Q000737:chemistry*; D002392:Catechin / Q000032:analysis / Q000737:chemistry; D004044:Dietary Proteins / Q000737:chemistry*; D052978:Disk Diffusion Antimicrobial Tests; D005230:Fatty Acids, Nonesterified / Q000737:chemistry*; D018857:Food Packaging; D005519:Food Preservation; D057927:Hydrophobic and Hydrophilic Interactions; D007850:Lauric Acids / Q000737:chemistry; D054709:Lecithins / Q000737:chemistry; D019787:Linoleic Acid / Q000737:chemistry; D008087:Listeria / Q000254:growth & development; D050296:Microbial Viability; D008863:Microspheres; D009113:Muramidase / Q000737:chemistry / Q000378:metabolism; D019301:Oleic Acid / Q000737:chemistry; D012995:Solubility; D013499:Surface Properties; D015028:Zein / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D004044:Dietary Proteins; D005230:Fatty Acids, Nonesterified; D007850:Lauric Acids; D054709:Lecithins; C030358:lauric acid; D019301:Oleic Acid; D002392:Catechin; D015028:Zein; D019787:Linoleic Acid; C421864:hen egg lysozyme; D009113:Muramidase