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http://dx.doi.org/10.3746/jkfn.2003.32.4.531

Potential Detection of γ-Irradiated Panicum miliaceum by Viscosity Measurement during Storage  

최맑음 (한국식품개발연구원)
권중호 (경북대학교 식품공학과)
김현구 (한국식품개발연구원)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.32, no.4, 2003 , pp. 531-538 More about this Journal
Abstract
To elucidate the physicochemical change of Panicm miliaceum powders caused by irradiation and identify detection of irradiation, viscosity, TBA value, Hunter color and total viable count were measured after irradiation of Panicum miliaceum powder. Panicum miliaceum powders from Korea and China were irradiated at 0, 2.5, 5, 7.5, 10, 15 kGy using a $Co^{60}$ irradiator and stored for 9 months at $0^{\circ}C$ and $20^{\circ}C$. All samples resulted in decrease for viscosity and specific parameter values by increasing dosage at 50 rpm after irradiation. These values showed dose-dependent relationship (above $r^2$＝0.92) between non-irradiated and irradiated samples during storage. These results suggest that the detection of irradiated Panicum miliaceum at various doses is possible by using viscometric method during storage. Total viable count, TBA value and Hunter color were determined as assistant indices for the samples viscosity measured. Total viable count, TBA values showed dose-dependent relationship (2.5 ~15 kGy). The difference in viscosity along with total viable count, TBA values between non-irradiated samples little or some changed with the lapse of post-irradiation time, but was still distinguishable each other more than 6 months at $0^{\circ}C$ and $20^{\circ}C$ for Panicum miliaceum powders from Korea and China.
Keywords
Panicum miliaceum; irradiation detection; viscosity; quality;
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Times Cited By KSCI : 1  (Citation Analysis)
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