Comparison of bactericidal effects of two types of pilot-scale intense-pulsed-light devices on cassia seeds and glutinous millet

Hee Jeong Hwang, Chan Ick Cheigh, Myong Soo Chung

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The aim of this study was to evaluate the bactericidal effect of two types of pilot-scale intense pulsed light (IPL) devices constructed in our laboratory. Cassia seeds and glutinous millet, with initial microbial loads of 2.04 × 104 and 5.03 × 103 CFU/g, respectively, were treated by cyclone-type and belt-type IPL devices at total fluences of 3.89–54.43 J/cm2. The maximum microbial reductions of the cassia seeds and glutinous millet were 0.74, and 0.66 log/g, respectively, when using the cyclone-type IPL, and 2.63 and 0.55 log/g when using the belt-type IPL device. The geometric mean diameter of cassia seeds and glutinous millet was 0.25 and 0.13, respectively. The cassia seeds having larger particle size than glutinous millet showed a greater bactericidal effect when treated with the belt-type device. Therefore, the design of the treatment chamber can have an improved bactericidal effect on cassia seeds, demonstrating the importance of selecting a suitable IPL device according to the size of the sample to be treated.

Original languageEnglish
Pages (from-to)170-175
Number of pages6
JournalInnovative Food Science and Emerging Technologies
Volume49
DOIs
StatePublished - Oct 2018

Bibliographical note

Funding Information:
This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry (IPET) through High Value-added Food Technology Development Program, funded by Ministry of Agriculture, Food and Rural Affairs (MAFRA) (317030-3) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( NRF-2016R1D1A3B03931649 ).

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

  • Belt-type
  • Cyclone-type
  • Intense pulsed light (IPL)
  • Pilot-scale
  • Seed food

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