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Time-dependent crosslinking of whey protein based films during storage

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Abstract Environmentally-friendly packaging based on whey protein offers the potential to replace petroleum-based oxygen barrier materials. Effective crosslinking of the whey protein is a prerequisite for this application. To quantify… Click to show full abstract

Abstract Environmentally-friendly packaging based on whey protein offers the potential to replace petroleum-based oxygen barrier materials. Effective crosslinking of the whey protein is a prerequisite for this application. To quantify the effect of storage time on the post-crosslinking of whey protein isolate based films, swelling tests were conducted in order to determine the degree of swelling (DoS). In addition, the degree of crosslinking (DoC) and the crosslinking density (CLD) were calculated using existing models with new data from water vapour sorption isotherm measurements. The results showed that increasing storage time led to decreased swelling of whey protein isolate based films (p

Keywords: storage time; whey protein; based films; whey; crosslinking whey

Journal Title: Materials Letters
Year Published: 2018

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