Functional properties and antifungal activity of films based on gliadins containing cinnamaldehyde and natamycin

被引:45
作者
Balaguer, Mari Pau [1 ]
Fajardo, Paula [2 ]
Gartner, Hunter [3 ]
Gomez-Estaca, Joaquin [1 ]
Gavara, Rafael [1 ]
Almenar, Eva [3 ]
Pilar-Hernandez-Munoz [1 ]
机构
[1] CSIC, Inst Agroquim & Tecnol Alimentos, Grp Envases, Valencia 46980, Spain
[2] ANFACO CECOPESCA, Vigo 36310, Spain
[3] Michigan State Univ, Sch Packaging, E Lansing, MI 48824 USA
关键词
Bioplastics; Natural antimicrobials; Antifungal properties; Active packaging; Cheese; ASPERGILLUS-NIGER; RELEASE; BIOPOLYMERS; STYRENE; BIOPLASTICS; PIMARICIN; GROWTH; CHEESE; FOOD;
D O I
10.1016/j.ijfoodmicro.2013.12.013
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Gliadin films cross-linked with cinnamaldehyde (1.5, 3, and 5%) and incorporated with natamycin (0.5%) were prepared by casting, and their antifungal activity, water resistance, and barrier properties were characterized. Incorporation of natamycin gave rise to films with greater water uptake, weight loss and diameter gain, and higher water vapor and oxygen permeabilities. These results may be associated to a looser packing of the protein chains as a consequence of the presence of natamycin. The different cross-linking degree of the matrices influenced the natamycin migration to the agar test media, increasing from 13.3 to 23.7 (mu g/g of film) as the percentage of cinnamaldehyde was reduced from 5% to 1.5%. Antifungal activity of films was assayed against common food spoilage fungi (Penicillium species, Alternaria solani, Colletotrichum acutatum). The greatest effectiveness was obtained for films containing natamycin and treated with 5% of cinnamaldehyde. The level of cinnamaldehyde reached in the head-space of the test assay showed a diminishing trend as a function of time, which was in agreement with fungal growth and cinnamaldehyde metabolization. Developed active films were used in the packaging of cheese slices showing promising results for their application in active packaging against food spoilage. (C) 2013 Published by Elsevier B.V.
引用
收藏
页码:62 / 71
页数:10
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