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目的:探讨富碘玉米芽苗菜的生物强化培育及对人体补碘的适用性探讨。方法:选取2个品种[鲜玉糯4号、鲜玉糯6号(改良型)]玉米为材料,用不同浓度碘培养液(0~200 mg/L)浸种14 h并培育7d,在萌发过程中实行碘的生物强化,培育富碘玉米芽苗菜。通过测定不同碘浓度培育条件下芽苗菜的生长参数(发芽率、芽长)、可食部分碘、Vc和矿物质(Fe、Zn、Mn、Mg)含量,探明培养液碘的适宜浓度条件和富碘玉米芽苗菜的补碘适用性。结果:鲜玉糯6号(改良型)玉米芽苗菜的富碘能力明显强于鲜玉糯4号。与对照(CK)相比,富碘玉米芽苗菜Vc、矿物质(Fe、Zn、Mn、Mg)含量差别不大。对鲜玉糯4号、鲜玉糯6号(改良型)两个品种,富碘玉米芽苗菜培育的碘培养液适宜浓度均为10~80 mg/L。富碘玉米芽苗菜可食部分每10 g(DW)中碘积累量,对鲜玉糯4号、鲜玉糯6号分别占中国青年及成人RNI的16.8%、85.9%。结论:玉米芽苗菜可能是进行碘生物强化的良好载体,预计富碘玉米芽苗菜适用于人体补碘。
Objective: To investigate the bio-fortification cultivation of iodine-enriched corn sprouts and its applicability to human body’s iodine supplement. Methods: Two varieties of Xian Yu Nuo No.4 and Xian Yu Nuo No.6 (modified) maize were used as raw materials, soaked with different concentrations of iodine (0 ~ 200 mg / L) for 14 h and cultivated for 7 days. In the process of biological strengthening of iodine, nurturing rich iodine corn sprouts. The contents of iodine, Vc and minerals (Fe, Zn, Mn and Mg) in edible shoots were determined by measuring the growth parameters (germination rate and shoot length), the appropriate concentrations of iodine Conditions and Applicability of Iodine for Iodized Corn Sprouts. Results: The iodine-rich capacity of Xiangyuyou No.6 (modified) corn sprouts was significantly higher than that of Xiangyuyou No.4. Compared with the control (CK), the contents of Vc and minerals (Fe, Zn, Mn, Mg) in iodine-enriched corn sprouts were not significantly different. The optimum concentration of iodine broth for cultivating Xiangyuhuo No.4 and Xiangyuhuo No.6 (improved type) and iodine - rich corn seedling was 10 ~ 80 mg / L. The iodine accumulation per 10 g (DW) of edible iodized corn sprouts accounted for 16.8% and 85.9% of the young and adult RNI of China respectively for Xiangyu No.4 and Xiangyu No.6 respectively. Conclusion: Corn sprouts may be a good carrier for bioaccumulation of iodine. It is expected that iodine-rich corn sprouts are suitable for iodine supplementation in the human body.