Effectiveness of antimicrobial coated oriented polypropylene/polyethylene films in sprout packaging |
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Authors: | Gayani R Gamage Hyun-Jin Park Ki Myong Kim |
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Affiliation: | School of Life Sciences and Biotechnology, Korea University in Seoul Korea, #206 Green Campus, Seoul 136-713, Republic of Korea |
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Abstract: | This study focused on the effect of antimicrobial incorporated soy protein isolate (SPI) coated oriented polypropylene/polyethylene (OPP/PE) packaging on extended shelf life of fresh sprouts. To develop antimicrobial SPI-coated packages, the minimum inhibitory and bactericidal concentrations of antimicrobial (allyl isothiocyanate, trans-cinnamaldehyde, garlic oil, and rosemary oil) and film properties of antimicrobial incorporated SPI films were investigated. Different concentrations (0.6–1.2%, v/v) of the SPI incorporated antimicrobial compounds were coated onto the OPP/PE film and heat-sealed. Packages containing sprouts (alfalfa, broccoli, and radish) were stored at 10 °C for 5 days. Significant reduction of the total microbial count of sprouts was observed in treated samples. Allyl isothiocyanate was the most effective antimicrobial compound, followed by garlic oil and trans-cinnamaldehyde. |
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