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<p>In this study, six types of fish were treated with intense pulsed light (IPL) with a total energy fluences of 3.6–28.4&#xa0;J/cm<sup>2</sup> and the maximum microbial inactivation levels of six fish were shown 1.23–1.85 log. Also, <i>K</i><sub>1</sub> value and hypoxanthine ratio, which are indicators of fish freshness and degradation, were measured to confirm the degree of decay by storage period according to the energy fluences of IPL. In all fish, IPL reduced the rate of hypoxanthine accumulation at specific timepoints depending on the energy fluence. For example, in red seabream treated at 17.1&#xa0;J/cm<sup>2</sup>, the hypoxanthine ratio on day 10 was reduced by 74.9% compared to the control. Meanwhile, irradiating excessively large energy fluences of IPL can rather promote deterioration of freshness in fish during storage period. Therefore, it is necessary to optimize the treatment conditions of IPL that minimize the acceleration of ATP degradation while maximize the microbial inactivation.</p>

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Preserving fish quality through intense pulsed light: microbial inactivation and ATP degradation control

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Da-Hee Ryu,
  • Hye-Jae Choi,
  • Ji-Yoon Lee,
  • Hee-Jeong Hwang,
  • Myong-Soo Chung

摘要

In this study, six types of fish were treated with intense pulsed light (IPL) with a total energy fluences of 3.6–28.4 J/cm2 and the maximum microbial inactivation levels of six fish were shown 1.23–1.85 log. Also, K1 value and hypoxanthine ratio, which are indicators of fish freshness and degradation, were measured to confirm the degree of decay by storage period according to the energy fluences of IPL. In all fish, IPL reduced the rate of hypoxanthine accumulation at specific timepoints depending on the energy fluence. For example, in red seabream treated at 17.1 J/cm2, the hypoxanthine ratio on day 10 was reduced by 74.9% compared to the control. Meanwhile, irradiating excessively large energy fluences of IPL can rather promote deterioration of freshness in fish during storage period. Therefore, it is necessary to optimize the treatment conditions of IPL that minimize the acceleration of ATP degradation while maximize the microbial inactivation.