Poster Topical Area: Nutrition Translation
Location: Hall D
Poster Board Number: 615
Objects: Reference foods containing certified information on trace nutrient can be used for the accuracy checking in measuring nutrient contents in foods. They are essential in analysis of nutrient values for the establishment of food nutrient composition database. To achieve this aim, the reference foods should have a similar food matrix corresponding to the kind of food group that should be analyzed. INAA(Instrumental Neutron Activation Analysis)-method is a non-destructive method and useful for the measurement of micro-mineral or heavy metal in foods,, which can prevent the loss of volatile micro-minerals during pretreatment and facilitate an accurate analysis. So this study was aimed to find food list for the development of grain RM which have certified values on micromineral contents reflecting Korean diet using INAA-method.
Methods: an analysis of dietary consumption by food groups of Koreans was conducted by statistical analysis of the datasets of the National Health and Nutrition Examination Survey(KNANES). The key foods of Korean were investigated according to food and energy intake. As grain food group, rice and wheat flour were selected. In order to make the rice CRM, four regions in south Korea were selected considering the production size of rice and soil difference. In order to compose the reference rice food, 8 kinds of rice were selected. For wheat flour CRM, the production size of Korean market was examined and 3 manufacturing company with high production size were selected. The mineral content of these two CRM candidates were analyzed using ICP/OES and INAA method using Korean research reactor. And the analysis accuracy was checked using NIST CRMs.
Results: Through analysis of KNANES dataset, it was found out that the food intake by amount was in the order of white rice, beer, kimchi. The consumption of food items by energy grade were as follows: all subjects-white rice> pork> soju> ramen> bread, Low-mineralized foods were excluded from the final key foods through comparison of nutritional ingredients. The accurate analysis of Se, and Zn of NIST CRM were achieved using INAA, but not by ICP/OES for Se. Conclusions: This work showed that by using key foods and INAA-method, we can develop two grain CRM foods reflecting the Korean dietary practice which can be used in the micro-mineral analysis of grain foods.
Yongin,, Kyonggi-do, Republic of Korea