Effect of two different rice dehusking procedures on total arsenic concentration in rice

A. Signes, K. Mitra, F. Burlo, A. A. Carbonell-Barrachina*, Antonio Signes-Pastor

*Corresponding author for this work

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Pollution of subterranean water by arsenic (As) in Asia has resulted in the worst chemical disaster in human history. For populations living on subsistence rice diets, As contamination of rice grain contributes greatly to dietary As exposure. The main objectives of this study were to compare two dehusking processes: (a) wet process (soaking of rice, boiling and mechanical hulling) and (b) dry process (mechanical hulling), and recommend the method leading to a lower As content in commercial rice. In general, hulling of paddy rice (373 mu g As kg(-1)) significantly decreased As content in rice grain (311 mu g As kg(-1)). The final As concentrations in boiled rice (final product of the wet process) and atab rice (dry process) were 332 and 290 mu g kg(-1). Thus, the dry method is recommended for dehusking paddy rice if not As-free water is available. However, villagers can reduce the As content in the wet system by discarding the soaking water and using new water for the light boiling. Finally, it is not recommended to use rice husk for feeding animals because the As concentration is very high, approximately 1,000 mu g As kg(-1).

Original languageEnglish
Pages (from-to)561-567
Number of pages7
JournalEuropean Food Research and Technology
Volume226
Issue number3
DOIs
Publication statusPublished - Jan 2008

Keywords

  • animal feed
  • hulling
  • husk
  • paddy rice
  • West Bengal
  • WEST-BENGAL
  • COOKED RICE
  • INDIA
  • WATER
  • BANGLADESH
  • AREA

Cite this

Signes, A., Mitra, K., Burlo, F., Carbonell-Barrachina, A. A., & Signes-Pastor, A. (2008). Effect of two different rice dehusking procedures on total arsenic concentration in rice. European Food Research and Technology, 226(3), 561-567. https://doi.org/10.1007/s00217-007-0571-6