Bioavailability of heavy metal in rice using in vitro digestion model

Rice is a carbohydrate, one of the plant-based foods that can accumulate heavy metal from soil and the irrigation water. Since total heavy metal always overestimates the amount of heavy metal available in rice, bioavailability of heavy metal is always preferred. Many studies have been done and found that in vitro methods offer an appealing alternative to human and animal studies. They can be simple, rapid, low in cost and may provide insights which not achievable in the in vivo studies. In vitro digestion model for rice may differ from other in vitro digestion models applied in soil or other type of foods studies. This review aims to provide an overview of in vitro digestion model used to determine bioavailability of heavy metal in rice, summarize health risk assessment application of heavy metal in rice studies and highlight the importance of health risk assessment to be included in the studies. Future exploration of in vitroNdigestion model and health risk assessment application on the bioavailability of heavy metal in rice was also suggested.

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