Abstract
The need for safe food products has motivated food scientists and industry to find novel technologies for antimicrobial delivery for improving food safety and quality. Controlled release packaging is a novel technology that uses the package to deliver antimicrobials in a controlled manner and sustain antimicrobial stress on the targeted microorganism over the required shelf life. This work studied the effect of controlled release of nisin to inhibit growth of Micrococcus luteus (a model microorganism) using a computerized syringe pump system to mimic the release of nisin from packaging films which was characterized by an initially fast rate and a slower rate as time progressed. The results show that controlled release of nisin was strikingly more effective than instantly added (“formulated”) nisin. While instant addition experiments achieved microbial inhibition only at the beginning, controlled release experiments achieved complete microbial inhibition for a longer time, even when as little as 15% of the amount of nisin was used as compared to instant addition.
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Acknowledgments
This work was supported by “National Research Initiative Grant 2006-35503-17568 from the USDA Cooperative State Research, Education, and Extension Service Program on Improving Food Quality and Value.”
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Balasubramanian, A., Lee, D.S., Chikindas, M.L. et al. Effect of Nisin’s Controlled Release on Microbial Growth as Modeled for Micrococcus luteus . Probiotics & Antimicro. Prot. 3, 113–118 (2011). https://doi.org/10.1007/s12602-011-9073-8
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DOI: https://doi.org/10.1007/s12602-011-9073-8