IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v18y2021i7p3360-d523566.html
   My bibliography  Save this article

Inactivation of Indigenous Microorganisms and Salmonella in Korean Rice Cakes by In-Package Cold Plasma Treatment

Author

Listed:
  • Joo Hyun Kang

    (Department of Food Science and Technology, Seoul Women’s University, 621, Hwarangro, Nowon-gu, Seoul 01797, Korea
    These authors contributed equally to this work.)

  • Jaewoo Bai

    (Department of Food Science and Technology, Seoul Women’s University, 621, Hwarangro, Nowon-gu, Seoul 01797, Korea
    These authors contributed equally to this work.)

  • Sea C. Min

    (Department of Food Science and Technology, Seoul Women’s University, 621, Hwarangro, Nowon-gu, Seoul 01797, Korea)

Abstract

The antimicrobial effects of in-package cold plasma (CP) treatment on Korean rice cakes (KRC) were evaluated. The CP treatment (25 kV) inactivated indigenous mesophilic aerobic bacteria by 0.8–1.0 log CFU/g, irrespective of the position of KRC in the package. The addition of a shaking step during CP treatment increased the reduction in microbes by ~1 log CFU/g. The microbial inactivation efficiency increased significantly when the treatment time increased from 1 to 3 min. Microbial inactivation activity was highest for packages containing eight rice cakes. The optimized CP treatment achieved a 2.0 ± 0.1 log CFU/g reduction in indigenous bacteria. In addition, the optimum CP treatment inactivated indigenous yeast and molds and Salmonella in KRC by 1.7 ± 0.1 log CFU/g and 3.9 ± 0.3 log CFU/g, respectively. No significant changes in color and firmness were observed, and the surface temperature of KRC did not exceed 22 °C after CP treatment. Moreover, CP treatment damaged the cellular membrane of Salmonella , mainly by inducing lipid peroxidation. This study demonstrates the potential use of in-package CP treatment for the non-thermal microbial inactivation of KRC.

Suggested Citation

  • Joo Hyun Kang & Jaewoo Bai & Sea C. Min, 2021. "Inactivation of Indigenous Microorganisms and Salmonella in Korean Rice Cakes by In-Package Cold Plasma Treatment," IJERPH, MDPI, vol. 18(7), pages 1-10, March.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:7:p:3360-:d:523566
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/18/7/3360/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/18/7/3360/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:18:y:2021:i:7:p:3360-:d:523566. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.