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KMID : 0380620160480010036
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Korean Journal of Food Science and Technology
2016 Volume.48 No. 1 p.36 ~ p.41
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Sterilization of Rapeseed Sprouts by Intense Pulsed Light Treatment
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Park Hee-Ran
Cha Gyung-Hee
Shin Jung-Kue
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Abstract
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In this study, the effects of intense pulsed light (IPL) treatment on microbial inactivation and quality in rapeseed sprouts were investigated. Untreated rapeseed sprouts exhibit a high level of total aerobic bacteria (TAB) (1.2×107 CFU/ g), coliform bacteria (coliform) (3.3×106 CFU/g), and pathogenic E. coli (PE) (2.1×105 CFU/g). The microorganisms found on rapeseed sprouts decreased with exposure to increasing light intensity and treatment time. The greatest reduction in microbial content was observed with a treatment of 1000 V, 5 pps for 10 min, where TAB, coliform, and PE levels decreased to 1.0 log CFU/g, 1.6 log CFU/g, and 1.8 log CFU/g, respectively. In agreement with these data, the microbial inactivation rate increased with the increase in the distance between the light source and the samples during IPL treatment. After IPL treatment of rapeseed sprouts, water content and vitamin C content decreased.
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KEYWORD
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rapeseed sprouts, intense pulsed light (IPL), non-thermal sterilization
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