迁移条件对返青箬叶中铜迁移的影响  

Effect of migration conditions on copper migration from regreen Indocalamus leaves

作　　者：刘立萍 张志军 沈宏桂 罗宏泉 谌海群 LIU Liping;ZHANG Zhijun;SHEN Honggui;LUO Hongquan;CHEN Haiqun(Huaihua Inspection&Testing Center,Huaihua,Hunan 418000,China;School of Medical Laboratory,Hunan University of Medicine,Huaihua,Hunan 418000,China)

机构地区：[1]怀化市检验检测中心,湖南怀化418000 [2]湖南医药学院医学检验学院,湖南怀化418000

出　　处：《食品与机械》2025年第3期33-38,共6页Food and Machinery

基　　金：湖南省自然科学基金项目(编号:2022JJ90058)。

摘　　要：[目的]研究迁移温度、时间及铜含量对返青箬叶中铜向食品模拟物中迁移的影响。[方法]用五水硫酸铜溶液浸泡箬叶制备返青箬叶,食品模拟物包括超纯水、2.5%(质量分数)氯化钠溶液、4%(体积分数)乙酸溶液、10%(质量分数)白砂糖溶液、大豆油和5‰(质量分数)碳酸氢钠溶液;考察迁移温度、时间及铜含量对返青箬叶中铜迁移量的影响。[结果]除大豆油外,返青箬叶在乙酸溶液中的迁移量最大,其次是氯化钠溶液;当迁移温度为100℃时,所有食品模拟物中的铜迁移量在2 h时达到峰值,然后随着时间的延长呈下降趋势;当迁移时间为24 h时,超纯水、氯化钠溶液和大豆油的迁移峰值在40℃;乙酸和白砂糖溶液的迁移峰值在25℃;返青箬叶中铜含量越高,迁移量越大。[结论]食品模拟物性质、加热时间和温度是影响返青箬叶中铜迁移的重要因素;返青箬叶中铜含量越高,迁移量越大,酸性食品更有利于铜迁移。[Objective]To analyze the effects of migration temperature,heating time,and copper content on the migration of copper from regreen Indocalamus leaves to food simulants.[Methods]Regreen Indocalamus leaves were prepared by being soaked in copper sulfate pentahydrate solutions.Food simulants included ultrapure water,2.5%(mass fraction)sodium chloride solution,4%(volume fraction)acetic acid solution,10%(mass fraction)white sugar solution,soybean oil,and 5‰(mass fraction)sodium bicarbonate solution.The effects of migration temperature,heating time,and copper content on the migration amount of copper from regreen Indocalamus leaves were analyzed.[Results]Except for soybean oil,the migration amount of copper from regreen Indocalamus leaves was the largest in 4%acetic acid solution,followed by 2.5%sodium chloride solution.When the migration temperature was 100℃,the copper migration amount in all food simulants reached peaks in 2 hours,and then decreased as time elapsed;when the migration time was 24 hours,the migration amount reached peaks in ultrapure water,2.5%sodium chloride solution and soybean oil at 40℃,and the migration amount reached peaks in 4%acetic acid solution and 10%white sugar solution at 25℃;The higher the copper content of regreen Indocalamus leaves is,the greater the migration amount is.[Conclusion]The properties of food simulants,heating time,and temperature are important factors affecting the copper migration from regreen Indocalamus leaves.As the copper content of regreen Indocalamus leaves is higher,the migration amount is greater,and acidic food is more conducive to copper migration.

关 键 词：返青箬叶 重金属铜 食品模拟物 迁移量 

分 类 号：TS201.2[轻工技术与工程—食品科学]