Evaluation of the Cadmium Levels of Various Brown Rice Grown in Paddy Soil
Date Issued
2014
Date
2014
Author(s)
Yeh, Chia-Min
Abstract
Food safety issue gained more and more public concern when the living standard and quality of life improved in recent years. The purpose of this study was to estimate Cd content in rice grown in Taiwan and plot the distribution map of the high risk areas as to provide a basic reference for decision making of agricultural authorities. Based on the predictive model for Cd levels in brown rice developed by Taiwan Agricultural Research Institute, the productivity and distribution areas of the high Cd rice in the various cultivar were estimated via analyzing soil characteristics and rice yields at towns in Taiwan. The results of this study was carried out that 16 towns were recognized as the serious risk areas of growing Indica and Hybrid Indica with high Cd, and their Indica,Glutinous rice yields were about 16 thousand tons per year (about 1 % of total rice yields in Taiwan) where located at Yilan and Changhua county. Ershui town in Changhua county was belong to the serious risk areas of growing Japonica rice with high Cd and its Japonica rice yields were about 8 thousand tons per year (about 0.5 % of total rice yields in Taiwan). Furthermore, Luodong town in Yilan and Tanzi District in Taichung were recognized as the potential risk areas of growing Japonica rice with high Cd. By this case study, the rice yields in serious risk areas of growing rice with high Cd was estimated about a quantity to provide the consumption of 510 thousand people per year in Taiwan. This study suggested that agricultural authorities could refer to the productivity and distribution areas of the high Cd rice from this study and further carry out the relative strategy to be an important reference of risk management for food safety.
Subjects
農地
重金屬
鎘
鎘米
水稻品種
水稻鎘米產出風險區
Type
thesis
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