Cooking rice in a high water to rice ratio reduces inorganic arsenic content

Andrea Raab, Christina Baskaran, Jorg Feldmann, Andrew A Meharg

Research output: Contribution to journalArticle

113 Citations (Scopus)

Abstract

Total arsenic and arsenic speciation was performed on different rice types (basmati, long-grain, polished ([white] and wholegrain [brown]) that had undergone various forms of cooking. The effect of rinse washing, low volume (2.5 : 1 water : rice) and high volume (6 : 1 water : rice) cooking, as well as steaming, were investigated. Rinse washing was effective at removing circa. 10% of the total and inorganic arsenic from basmati rice, but was less effective for other rice types. While steaming reduced total and inorganic arsenic rice content, it did not do so consistently across all rice types investigated. Low volume water cooking did not remove arsenic. High volume water : rice cooking did effectively remove both total and inorganic arsenic for the long-grain and basmati rice (parboiled was not investigated in high volume cooking water experiment), by 35% and 45% for total and inorganic arsenic content, respectively, compared to uncooked (raw) rice. To reduce arsenic content of cooked rice, specifically the inorganic component, rinse washing and high volume of cooking water are effective.

Original languageEnglish
Pages (from-to)41-44
Number of pages4
JournalJournal of Environmental Monitoring
Volume11
Issue number1
Early online date20 Nov 2008
DOIs
Publication statusPublished - 1 Jan 2009

Keywords

  • dietary exposure
  • soils
  • grain
  • contamination

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