Impact of factors affecting the efficacy of intense pulsed light for reducing Bacillus subtilis spores
- 주제(키워드) Intense pulsed light (IPL) , Bacillus subtilis , Spore , Pulse width , Optimal condition
- 주제(기타) Food Science & Technology
- 설명문(일반) [Hwang, Hee-Jeong] Dongguk Univ, Res Inst Biotechnol & Med Converged Sci, Goyang 10326, South Korea; [Kim, Gyu-A.; Chung, Myong-Soo] Ewha Womans Univ, Dept Food Sci & Engn, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS, KCI등재
- OA유형 Green Published
- 발행기관 KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
- 발행년도 2021
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000183676
- 본문언어 영어
- Published As http://dx.doi.org/10.1007/s10068-021-00971-3
- PubMed https://pubmed.ncbi.nlm.nih.gov/34721927
초록/요약
This study investigated how the following four intense pulsed light (IPL) treatment factors affect the inactivation of Bacillus subtilis (KCCM 11,315) spores: distance between the sample and IPL lamp (8, 13, and 18 cm), pulse width (0.5, 1.3, and 2.1 ms), charging voltage (1000, 1200, and 1400 V), and processing time (10, 20, and 30 s). The results showed that all four factors considerably influenced the spore inactivation rate in different ways. Excluding processing time, which does not affect the pulse itself, the effect was largest for pulse width, followed by distance, and charging voltage. The optimal treatment condition that maximized the inactivation rate was a distance of 8 cm, a pulse width of 2.1 ms, a charging voltage of 1000 V, and a processing time of 30 s, which together produced a 6 log reduction. It revealed that individual factors need to be investigated together for achieving the optimal condition of IPL.
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