Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (4): 040301 doi: 10.13538/j.1001-8042/nst.2013.04.005


Study on rapid detection of irradiated rice based on RVA profile

MEI Shufang1,2 FU Junjie1,*?ZHOU Xiyao1  XU Furong1  ZHAO Xiaojun1   

  1. 1Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou310029, China
    2Jinhua Polytechnic College, Jinhua 321017, China
  • Received:2013-06-12
  • Contact: FU Junjie
  • Supported by:

    Supported by Special Funds for Agro-scientific Research in the Public Interest (No.201103007)

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MEI Shufang, FU Junjie, ZHOU Xiyao, XU Furong, ZHAO Xiaojun. Study on rapid detection of irradiated rice based on RVA profile.Nuclear Science and Techniques, 2013, 24(4): 040301     doi: 10.13538/j.1001-8042/nst.2013.04.005


In order to confirm whether the rice sample was exposed to gamma radiation, the changes in starch pasting viscosity of rice irradiated by different absorbed doses with additive acid solution and distilled water were investigated. The peak viscosity of irradiated rice sample was significantly decreased with the increment of absorbed doses even for the samples storedover 360 days. Irradiation samples can be distinguished from non-irradiated samples by their RVA profile as inthe acid solution (pH=2.5), the starch pasting viscosities of irradiated rice samples were apparently higherwhile the starch pasting viscosities of non-irradiated rice samples were lower than that in distilled water (pH=7.0). The irradiation absorbed dose can be estimated accurately by the regression equation constructed with peak viscosity and absorbed doses.

Key words: Rice, Starch, Irradiation, RVA profile