对涂有碘掺杂壳聚糖可食用膜的番茄果实进行碘补充。
An iodine supplementation of tomato fruits coated with an edible film of the iodide-doped chitosan.
机构信息
Materials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand.
出版信息
Food Chem. 2016 Jun 1;200:223-9. doi: 10.1016/j.foodchem.2016.01.042. Epub 2016 Jan 11.
In general, the risk of numerous thyroid cancers inevitably increases among people with iodine deficiencies. An iodide-doped chitosan (CT-I) solution was prepared for dipping tomatoes to coat the fresh surface with an edible film (1.5 μm), thereby providing iodine-rich fruits for daily intake. Characterisation of the thin film was conducted by FTIR and SEM. Stability of the CT-I film was studied via water immersion at various time intervals, and no residual iodide leached out due to intrinsic interactions between the cationic amino group of chitosan and iodide ions. Moreover, the iodide supplement exhibited no effect on the antioxidant activity of tomatoes. The iodine content in the film-coated tomato was determined by ICP-OES. The tomato coating with 1.5% (w/v) CT-I contained approximately 0.4 μg iodide per gram fresh weight. In addition, the freshness and storability of iodine-doped tomatoes were also maintained for shelf-life concerns.
一般来说，碘缺乏症患者甲状腺癌的风险必然会增加。我们制备了一种碘化壳聚糖（CT-I）溶液，用于浸泡西红柿，在新鲜表面涂覆一层可食用的薄膜（1.5μm），从而为日常摄入提供富含碘的水果。通过傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）对薄膜进行了表征。通过在不同时间间隔的水中浸泡来研究 CT-I 薄膜的稳定性，由于壳聚糖的阳离子氨基基团和碘离子之间的固有相互作用，没有游离的碘离子浸出。此外，碘补充剂对西红柿的抗氧化活性没有影响。通过电感耦合等离子体发射光谱仪（ICP-OES）测定了薄膜包衣番茄中的碘含量。1.5%（w/v）CT-I 的番茄包衣中每克鲜重含有约 0.4μg 碘化物。此外，为了保持货架期的新鲜度和储存稳定性，也保持了碘掺杂番茄的新鲜度和储存稳定性。
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