為了探討不同種植地區可能造成的差異性，本研究將針對臺灣主要產地之六類(包含22 種品系)山藥，植育於霧峰農試所，藉最適化儀器中子活化分析(INAA)，進行微量元素分析。本文對每種山藥品系進行三重複量測，共分析19 種元素。INAA 方法並與國際原子能總署地衣標準品(IAEA-336)進行比對/品質管制。結果顯示大部份的元素含量在各品系中分佈範圍及差異性極大，台農1 、2 號具有最多的鉀、鎂及鐵；硒、砷是第一次分析於臺灣本土種植山藥，濃度在10 -2 至10 -3 mg/kg 之間，本結果與馬來西亞、斯里蘭卡等地山藥元素含量相符合。以對山藥的攝食習慣，每人、每日最多攝取100 g 乾重山藥計算，鎂、銅、鈷之每日最大攝取量少於世界健康組織之建議值。 To effectively suppress the diversity different planted lands, six distinct species of Dioscorea spp.(22 varieties) were cultivated at the same farm, Wufeng in Taiwan. An optimal Instrumental Neutron Activation Analysis (INAA) was developed and about 19 elements were determined in the Taiwanese Dioscorea spp. Standard Reference Material (SRM), lichen IAEA-336 was also analyzed for quality assurance and concentration analysis. The samples and standard were analyzed in triplicate. Results indicate TNG1, TNG2 have the most abundance of K, Mg, and Fe. Most elements have wide ranges of concentrations among different species. Herein, Se and As were first analyzed in Taiwanese Yam, ranging from 10 -2 to 10 -3 mg/kg. Results show agreement with Dioscorea spp. planted in Malaysia and Sri Lanka. According to the consumption habit of these herbs, an adult is suggested to eat dry weight 100 g of Dioscorea spp. per day, Maximum Daily Intakes (MDI) of Cu, Co, Mg and Zn are below the current recommended levels by the World Health Organization (WHO).
