Preparation of a porcine plasma protein composite film and its application

Abstract

To use blood released from slaughtering houses, a porcine plasma protein (PPP)/nanoclay composite film was prepared. The tensile strength and elongation at break values of the PPP composite film with 5% nanoclay were 10.01 MPa and 6.55%, respectively. The PPP composite film containing 1% grapefruit seed extract (GSE) was applied to pork meat, and the populations of inoculated Escherichia coli O157:H7 and Listeria monocytogenes in the pork meat packaged with the PPP composite film decreased by 0.8 and 1.0 log CFU/g, respectively, after 7 days of storage compared to the populations of the control. In addition, thiobarbituric acid values in the pork meat packaged with the PPP composite film were less than those of the control sample during storage. These results suggest that the PPP nanocomposite film containing 1% GSE can be used as a packaging material to maintain the quality of pork meat.

Preparation and application of a flaxseed meal protein film containing lemongrass (Cymbopogon citratus) oil

“…Biodegradable and edible films have recently received increasing attention as an alternative to nonbiodegradable plastic films (Tongnuanchan et al ., ). Biodegradable and edible film base materials may be produced from proteins owing to their good film‐forming ability and relative abundance (Cao et al ., ; Lee & Song, ). However, their high cost and poor physical properties and thermal stability (Song et al ., ) have necessitated a search for cheap biodegradable and edible film base materials with good physical properties.…”