Natamycin based sol-gel antimicrobial coatings on polylactic acid films for food packaging

被引：44
作者：
Lantano, Claudia [1 ]
Alfieri, Ilaria [1 ,2 ]
Cavazza, Antonella [1 ,2 ]
Corradini, Claudio [1 ,2 ]
Lorenzi, Andrea [1 ,2 ]
Zucchetto, Nicola [1 ,2 ]
Montenero, Angelo [1 ,2 ]
机构：
[1] Univ Parma, Dept Chem, I-43124 Parma, Italy
[2] Interdept Ctr Packaging, CIPACK, I-43124 Parma, Italy
来源：
FOOD CHEMISTRY | 2014年 / 165卷
关键词：
Natamycin; Antimicrobial active packaging; Sol-gel; Polyvinyl alcohol; Cheese; Polylactic acid; ACTIVE FILMS; RELEASE; LYSOZYME; IMPROVE;
D O I：
10.1016/j.foodchem.2014.05.066
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this work a comprehensive study on a new active packaging obtained by a hybrid organic-inorganic coating with antimicrobial properties was carried out. The packaging system based on polylactic acid was realised by sol-gel processing, employing tetraethoxysilane as a precursor of the inorganic phase and polyvinyl alcohol as the organic component, and incorporating natamycin as the active agent. Films with different organic-inorganic ratios (in a range between 1:19 and 1:4) were prepared, and the amount of antimycotic entrapped was found to be modulated by the sol composition, and was between 0.18 and 0.25 mg/dm(2). FTIR microspectroscopic measurements were used to characterise the prepared coatings. The antifungal properties of the films were investigated against mould growth on the surface of commercial semi-soft cheese. The release of natamycin from the films to ethanol 50% (v/v) was studied by means of HPLC UV-DAD. The maximal level released was about 0.105 mg/dm(2), which is far below the value allowed by legislation. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：342 / 347
页数：6
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