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KMID : 0881720220370060385
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Journal of Food Hygiene and Safety
2022 Volume.37 No. 6 p.385 ~ p.393
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Comparison of Total and Inorganic Arsenic Contamination in Grain and Processed Grain Foods
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Baek Eun-Jin
Kim Myung-Gil
Kim Hyun-Jue
Sung Jin-Hee
Lee You-Jin
Kwak Shin-Hye
Lee Eun-Bin
Kim Hye-Jin
Lee Won-Joo
Lee Myung-Jin
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Abstract
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The contamination level of inorganic arsenic, a human carcinogen, was investigated in 87 grains and 66 processed grain foods. Two inorganic arsenic species arsenite (As(III)) and arsenate (As(V)) and four organic arsenic monomethylarsonic acid, dimethylarsinic acid, arsenobetaine, arsenocholine were analyzed using HPLCICP/ MS with high separation and sensitivity and ICP/MS was used to quantify total arsenic. Inorganic arsenic was detected in all grains. And the total arsenic in grains consists of about 70-85% inorganic arsenic and about 10-20% DMA. The concentration of inorganic arsenic was high in rice and black rice cultivated in paddy soil with irrigated water, while the miscellaneous grain in field was low. Mean concentration of inorganic arsenic in rice germ, brown rice and polished rice was 0.160 mg/kg, 0.135 mg/kg, 0.083 mg/kg, respectively, indicating that rice bran contains more arsenic. In processed grain foods, inorganic arsenic concentration varied according to the kind of ingredients and content, and the detection amount was high in processed food with brown rice and germ. The arsenic content of all samples did not exceed each standard, but the intake frequency is high and it is considered that continuous monitoring is necessary for food safety.
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KEYWORD
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Grain, Inorganic arsenic, Organic arsenic, Total arsenic, HPLC-ICP/MS
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