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http://dx.doi.org/10.3746/jkfn.2013.42.2.268

Heavy Metal and Amino Acid Contents of Soybean by Application of Sewage and Industrial Sludge  

Moon, Kwang-Hyun (Dept. of Health and Longevity, Sunchang County office)
Kim, Jae-Young (Division of Food Chemical Residues, Dept. Food Safety Evaluation, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Adminstration)
Chang, Moon-Ik (Division of Food Chemical Residues, Dept. Food Safety Evaluation, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Adminstration)
Kim, Un-Sung (Quality Improvement Evaluation Team, Korea Health Industry Development Institute)
Kim, Seong-Jo (Dept. of Bio-Environmental Chemistry, Wonkwang University)
Baek, Seung-Hwa (Dept. of Biofood Science and Biotechnology, Chungbuk Provincial University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.42, no.2, 2013 , pp. 268-277 More about this Journal
Abstract
This study investigates the effects of accumulated levels of heavy metals and nutrients of cultivated soybean plant tissues, after the continuous application of sewage sludge (SS) and industrial sludge (IS). SS and IS were applied to soybean plants at loading of 0, 11.25, 22.50, and 45.00 Mg/ha, and the contents of heavy metals (Cd, Pb, Ni, Cu, and Zn), proteins, and amino acids in the cultivated soybean plants were measured. The Cd content in the soybean was 0.02~0.05 mg/kg, which is within the safety level set in the standard, and that of Pb was 0.02~0.15 mg/kg, which is also within the safety level except for IS 45 Mg/ha. The soybean harvest quantity was higher in the treatment groups than the control group in the first year. However, in the second year, SS had lower harvest and IS had the same level or a decreasing tendency, compared with the control group. In the first year, the content of amino acid which followed handling of SS was increased in the sludge groups more than in the control group in the case of glutamate. However, the influence of continuous application was increased in the sludge groups in the case of amino acids of 12 types. In conclusions, the accumulation in soybean of heavy metals by sludge treatment is not a problem, but the decreased yields needs to be considered. In addition, the most appropriate level of sludge treatment was 11.25 Mg/ha.
Keywords
soybean; heavy metals; amino acids; sludge;
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Times Cited By KSCI : 10  (Citation Analysis)
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