数字农科院2.0

气相色谱法检测生姜贮藏期间咪鲜胺及其代谢物残留动态研究

文献类型: 中文期刊

作者: 刘培;孙海薪;丁永冲;赵晗;让雪娜;林琼;佟世生;赵垚垚;段玉权

作者机构:

关键词: 生姜;咪鲜胺;2;4;6-三氯苯酚;保鲜;气相色谱法;衍生化反应;萃取

期刊名称:蔬菜

ISSN: 1001-8336

年卷期: 2024 年 7 期

页码:

收录情况: 无来源刊(2024版)

摘要: 为了确认采用气相色谱法检测生姜中咪鲜胺及其代谢物残留动态方法的准确性,并确定咪鲜胺对生姜贮藏保鲜作用的安全用量,试验在验证气相色谱法(ECD电子捕获检测器)测定衍生化后生姜样品中咪鲜胺残留量的分析方法的准确度和灵敏度的基础上,将经450mg/kg咪鲜胺处理后的生姜在低温条件下(12±1)℃贮藏,用气相色谱法检测咪鲜胺及其代谢物2,4,6-三氯苯酚的残留动态。结果表明:咪鲜胺的衍生化率在0.1~1.0mg/kg浓度下均为100%,采用气相色谱法检测生姜中咪鲜胺及其代谢物残留动态的方法简单有效,准确度和精确度较好,灵敏度较高,符合农药残留分析的基本要求。咪鲜胺在生姜贮藏过程中的残留消解较慢,姜皮中残留量随贮藏期延长呈下降趋势,贮藏期第42天时降至14.31mg/kg,在姜肉中总体表现为残留量先增加后降低的趋势,含量最大值在贮藏第35天,为0.31mg/kg,第42天后含量降至0.25 mg/kg;2,4,6-三氯苯酚在生姜不同组织中的含量变化整体呈上升趋势,贮藏期第28天时,姜皮、姜肉中含量分别为0.042、0.035mg/kg,残留量均小于0.1mg/kg,符合食品安全标准。因此,450 mg/kg浓度咪鲜胺处理可以作为生姜贮藏的防腐保鲜剂。

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