Nano Archive

Effect of nano-clay type on the physical and antimicrobial properties of whey protein isolate/clay composite films

Sothornvita, Rungsinee and Rhimb, Jong-Whan and Hong, Seok-In (2009) Effect of nano-clay type on the physical and antimicrobial properties of whey protein isolate/clay composite films. Journal of Food Engineering, 91 (Issue 3). 468 -473. ISSN 0260-8774

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Abstract

Whey protein isolate (WPI)-based composite films with three different types of nano-clays, Cloisite Na+, Cloisite 20A, and Cloisite 30B, were prepared using a solution casting method, and their physical and antimicrobial properties were determined in order to better understand the effect of nano-clay type on film properties. The resulting films exhibited an opaque appearance and haze, and the degree of this effect depended on type of nano-clays added. However, these films displayed a similar gloss and slightly lower transparency relative to transparent neat WPI film. The type of nano-clay used significantly influenced the tensile and the water vapor barrier properties of the composite films with the exception of Cloisite 30B, which had no negative effect. In addition, the WPI/Cloisite 30B composite films showed a beneficially bacteriostatic effect against Gram-positive bacteria, Listeria monocytogenes.

Item Type:Article
Uncontrolled Keywords:Whey protein isolate; Composite films; Montmorillonite; Organoclays; Physical properties; Antimicrobial activity
Subjects:Biomedical Science > Nanobiotechnology
ID Code:7909
Deposited By:CSMNT
Deposited On:03 Jan 2010 02:58
Last Modified:03 Jan 2010 02:58

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