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Guangzhou Scikoon Industry Ltd. Co.
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2024 Posters

Protein and Co-Products

Session: Protein and Co-Products Poster Session

Development of a novel bioactive packaging film based on mung bean protein isolate/pullulan incorporated with marjoram (Origanum majorana L.) essential oil

Tuesday, April 30, 2024
5:00 PM – 6:00 PM EDT
Abstract:

In this study, mung bean protein isolate (MPI)/pullulan (PU) composite films activated by marjoram essential oil (MEO) were prepared for the preservation of minced beef meat. The effect of MEO on the mechanical, barrier, antioxidant, and antimicrobial properties of composite films and the quality of minced beef meat during 14 days of storage at 4 ◦C was evaluated. The results revealed the presence of two components (MPI and MEO) in the PU film matrix with the formation of new intermolecular hydrogen bonds and an improvement in the amorphous nature of the film. The homogeneous surfaces of MPI-PU and MPI-PU-MEO films were observed, and the addition of MPI and MEO led to the reduced water vapor permeability and water solubility and the increased water contact angle of PU film. However, the tensile strength and flexibility of PU film improved only in the presence of MPI. In addition, the films enriched with MEO had a considerable positive effect on DPPH radical scavenging and antibacterial activity against pathogenic bacteria (Listeria monocytogenes and Escherichia coli). Based on the bacterial and chemical analyses of the minced meat samples, MEO-incorporation in MPI/PU films enhanced the oxidative stability of minced beef samples and showed effective antimicrobial activity against all of the tested bacteria.