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Article alert: Total and Inorganic Arsenic in Rice and Rice Bran Purchased in Thailand
04.06.2012

Journal of Food Protection (2012) 75(4): 771-774(4)

Ruangwises S, Saipan P, Tengjaroenkul B, Ruangwises N

Concentrations of total and inorganic arsenic were determined in 180 samples of polished and brown rice of three rice types, namely white, jasmine, and sticky, and 44 samples of rice bran from these three rice types purchased in Thailand. Concentrations (expressed in nanograms per gram) of inorganic arsenic in polished white, jasmine, and sticky rice were 68.3 17.6 (with a range of 45.0 to 106), 68.4 15.6 (41.7 to 101), and 75.9 24.8 (43.5 to 156), respectively, while those in the three brown rice samples were 124 34.4 (74.5 to 193), 120 31.6 (73.1 to 174), and 131 35.6 (78.0 to 188), respectively. Inorganic arsenic concentrations (expressed in nanograms per gram) in rice bran produced from the three rice types were 633 182 (375 to 919), 599 112 (447 to 824), and 673 195 (436 to 1,071), respectively. Rice bran contained concentrations of total and inorganic arsenic approximately seven and nine times higher, respectively, than those found in the corresponding polished rice. The levels of inorganic arsenic in the three rice types of both polished and brown rice were within the only published regulatory limit of 200 ng/g.


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