Effect of electron beam irradiation on microbial inactivation, nutritional and quality properties of semi-moist pet foods

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-03-10 DOI:10.1016/j.radphyschem.2025.112689

Anand Kumar Sethukali , Hyun Jung Lee , Dongbin Park , Hyun Jun Kim , Hag Ju Lee , Cheorun Jo

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引用次数: 0

Abstract

The objective of this study was to evaluate the effect of electron beam irradiation (E-beam) on semi-moist pet foods at different absorbed doses. The samples were exposed to e-beam at dose levels of 0, 2.5, 5, and 10 kGy. Then, their effect on microbiological, nutritional, and physicochemical properties was analyzed during 60 days of storage. A dose-dependent effect was observed in bacterial pathogens, especially, 10 kGy sterilized them without further growth throughout the storage period. The nutrient analysis confirmed that 10 kGy of e-beam irradiation did not significantly influence the nutritional components of semi-moist pet foods, ensuring they are nutritionally safe for pets. Irradiated samples showed less changes in quality over time, with lower microbial growth and stable attributes like water activity, pH, and redness (a∗). While samples treated with 10 kGy initially showed more lipid oxidation and protein degradation, these differences were not significant by day 60, suggesting that higher doses did not affect physicochemical properties during storage. In contrast, non-irradiated samples experienced microbial and physicochemical changes over the extended storage. Therefore, we conclude that e-beam irradiation up to 10 kGy can secure microbial safety in semi-moist pet foods, preserving their nutritional and quality attributes for pets’ consumption.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.