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2004•Korean Journal of Food Science and TechnologyRequires access

Detection of Gamma-Irradiated Dried Vegetable Using ESR Spectroscopy

Jeong-Eun Han, Jae-Seung Yang

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Abstract

Dried cabbage, spinach, carrot, mugwort and yam were irradiated at 1, 5 and 10 kGy using a 60 Co irradiator at room temperature. Effects of irradiation dose and storage time on irradiated dried vegetables were investigated through electron spin resonance (ESR) spectroscopy. Strong positive correlation coefficients (R 2 = 0.9698-0.9915) were obtained between irradiation dose and corresponding ESR signal intensity. ESR signal of mugwort was most stable at 9 weeks storage, followed by carrot, yam, and spinach, whereas that ESR signal of cabbage was not distinguishable.

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What this paper is about

Dried cabbage, spinach, carrot, mugwort and yam were irradiated at 1, 5 and 10 kGy using a 60 Co irradiator at room temperature. Effects of irradiation dose and storage time on irradiated dried vegetables were investigated through electron spin resonance (ESR) spectroscopy. Strong positive correlation coefficients (R 2 = 0.9698-0.9915) were obtained between irradiation dose and corresponding ESR signal intensity. ESR signal of mugwort was most stable at 9 weeks storage, followed by carrot, yam, and spinach, whereas that ESR signal of cabbage was not distinguishable.

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Available abstract

Dried cabbage, spinach, carrot, mugwort and yam were irradiated at 1, 5 and 10 kGy using a 60 Co irradiator at room temperature. Effects of irradiation dose and storage time on irradiated dried vegetables were investigated through electron spin resonance (ESR) spectroscopy. Strong positive correlation coefficients (R 2 = 0.9698-0.9915) were obtained between irradiation dose and corresponding ESR signal intensity. ESR signal of mugwort was most stable at 9 weeks storage, followed by carrot, yam, and spinach, whereas that ESR signal of cabbage was not distinguishable.

Key concepts: Spinach, Irradiation, Electron paramagnetic resonance, Chemistry, Mugwort, Food irradiation, Spectroscopy, Gamma irradiation

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