Low-energy X-ray irradiation: A novel non-thermal microbial inactivation technology

Zhang, Hongfei; Zhou, Weibiao

doi:10.1016/bs.afnr.2022.02.001

Cited by 7 publications

(2 citation statements)

References 134 publications

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“…At present, biosafety is the primary problem that plagues the application of protein feedstuffs of animal origin, such as porcine plasma protein, fish meal, meat meal, and feather meal, in livestock production, mainly because the pathogenic microorganisms in feed raw materials cannot be killed using the conventional processing techniques [27,28,34]. γ-ray irradiation has been widely used to reduce the number of bacteria in food [35], but the appropriate treatment dose is not clear, and little is known about the effect of the γ-ray irradiation treatment of feed on weaning piglets. Therefore, the purpose of our study was to assess the effect of different doses of γ-ray irradiation on the of bacteria in feed.…”

Section: Discussionmentioning

confidence: 99%

Effects of Gamma-Ray Irradiation of Bacteria Colonies in Animal Feeds and on Growth and Gut Health of Weaning Piglets

Wei,

Yang,

Jiang

et al. 2023

Animals

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Animal feeds contain a substantial number and diversity of microorganisms, and some of them have pathogenic potential. The objectives of this study were to investigate the effects of different doses of gamma (γ)-ray irradiation on the bacteria count in different types of feed and then to test the effect of γ-ray-irradiation-treated fishmeal on the gut health and growth performance of weaning piglets. In trial 1, three fishmeal samples, two feather meal samples, three meat meal samples, three soybean meal samples, and three vitamin complexes were treated with γ-ray irradiation doses of 0, 3, 6, or 9 kGy. The 6 and 9 kGy doses eliminated most of the bacteria in the feed but also resulted in a loss of vitamin C and B1. In trial 2, 96 weaning piglets were fed one of the following three diets with eight replicates (pens) per group over a 14-day period: (1) the control diet—the basal diet supplemented with 6% fishmeal with a low bacteria count (40 CFU/g) and no E. coli; (2) the fishmeal-contaminated diet (FM-contaminated) diet—the basal diet supplemented with 6% fishmeal with a high bacteria count (91,500 CFU/g) and E. coli contamination; and (3) the irradiated fishmeal (irradiated FM) diet—the basal diet supplemented with γ-ray-irradiation-treated E. coli-contaminated fishmeal. The piglets that received the FM-contaminated diet had significantly lower average daily gain and a greater diarrhea index compared to those fed the control diet, whereas γ-ray irradiation treatment abrogated the negative effect of the E. coli-contaminated fishmeal. Collectively, γ-ray irradiation at a dose of 6–9 kGy was sufficient to eliminate the microorganisms in the feed, thereby benefitting the growth performance and gut health of the weaning piglets.

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Section: Discussionmentioning

confidence: 99%

Effects of Gamma-Ray Irradiation of Bacteria Colonies in Animal Feeds and on Growth and Gut Health of Weaning Piglets

Wei,

Yang,

Jiang

et al. 2023

Animals

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“…Several authors [9][10][11][12][13] have reported the high effectiveness of microbial inactivation, targeting bacteria such as Staphylococcus spp., Listeria spp., Enterobacterales spp., Vibrio spp., Salmonella spp., and others. However, the degree of inactivation depends on various internal (e.g., spore formation, radiation sensitivity) and external (e.g., temperature, oxygen presence, processing technology) factors [14].…”

Section: Introductionmentioning

confidence: 99%

Identification of fish irradiation by EPR spectrometry: Signal intensity and stability

Medzhidov,

Vasileva,

Polyakova

et al. 2024

E3S Web of Conf.

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In this work, the application of electron paramagnetic resonance spectroscopy for assessing the irradiation of fish is described. Pink salmon was chosen as the research object and irradiated at 3 and 6 kGy doses. A linear correlation was observed between the increase in EPR signal intensity and the radiation dose. It was demonstrated that the fish used in this study had previously been irradiated by the supplier for microbiological sterilization. To assess the signal decay kinetics, repeat spectroscopy of samples was conducted over the course of a year after irradiation. A decrease in EPR signal intensity is observed initially after irradiation, attributed to the decay of short-lived radicals. The results indicate that EPR spectroscopy is an accurate and sensitive way to determine whether fish has been irradiated.

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Comparison of the efficacy of physical and chemical strategies for the inactivation of biofilm cells of foodborne pathogens

Ban

Kim

Kang

et al. 2023

Food Sci Biotechnol

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Low-energy X-ray irradiation: A novel non-thermal microbial inactivation technology

Cited by 7 publications

References 134 publications

Effects of Gamma-Ray Irradiation of Bacteria Colonies in Animal Feeds and on Growth and Gut Health of Weaning Piglets

Effects of Gamma-Ray Irradiation of Bacteria Colonies in Animal Feeds and on Growth and Gut Health of Weaning Piglets

Identification of fish irradiation by EPR spectrometry: Signal intensity and stability

Comparison of the efficacy of physical and chemical strategies for the inactivation of biofilm cells of foodborne pathogens

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