Effect of gaseous chlorine dioxide treatment on the quality of rice and wheat grain

Gyung Deok Han, Hyeok Kwon, Bo Hwan Kim, Ho Jung Kum, Keonwoo Kwon, Wook Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Gaseous chlorine dioxide (ClO2), which is a strong disinfecting agent with strong oxidation properties and penetration ability, is used to control insect pests and fungal contamination in stored grains. However, the effect of gaseous ClO2 on stored grain has yet to be reported. In the present study, we exposed rice and wheat seeds to several concentrations of ClO2 gas for various durations and found that the viability of rice was affected less than that of wheat. After 100 ppm of gaseous ClO2 for 12 h, the normal rice seedling rate was not significantly different than that of the control. However, that of wheat was significantly decreased. We also measured the ClO2 residueon stored rice and wheat after 200 ppm of gas treatment for 24 h. After 10 days of storage following the treatment, ClO2 and chlorine were not detected on either rice or wheat. Chlorite was detected on rice at 0.22 mg/kg of grain; however, it was not detected on wheat. These results suggest that gaseous ClO2 treatment affects the viability of rice and wheat seed but leaves minimal chemical residue.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalJournal of Stored Products Research
Publication statusPublished - 2018 Mar

Bibliographical note

Funding Information:
This work was supported by Korea University and the Korea Institute of Planning & Evaluation for Technology in Food, Agriculture, Forestry & Fisheries [grant no. 114063-03].

Publisher Copyright:
© 2018


  • ClO
  • Grains
  • Postharvest
  • Seed treatment
  • Stored product

ASJC Scopus subject areas

  • Food Science
  • Agronomy and Crop Science
  • Insect Science
  • Horticulture


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