食品科学

• 工艺技术 •    下一篇

次氯酸钠消毒处理条件对鸡爪中氨基脲残留的影响

沈金灿1,2,谢冬冬3,康海宁1,2,郑宗坤3,赵凤娟1,2,王之维3   

  1. 1.深圳出入境检验检疫局食品检验检疫技术中心,广东 深圳 518045;
    2.深圳市食品安全检测技术研发重点实验室,广东 深圳 518045;3.深圳大学化学与化工学院,广东 深圳 518060
  • 出版日期:2015-05-25 发布日期:2015-05-08
  • 基金资助:

    国家自然科学基金青年科学基金项目(31201444);深圳市基础研究项目(JC201105190972A)

Influence of Disinfection Conditions with Sodium Hypochlorite on Semicarbazide Residue in Chicken Claw

SHEN Jincan1,2, XIE Dongdong3, KANG Haining1,2, ZHENG Zongkun3, ZHAO Fengjuan1,2, WANG Zhiwei3   

  1. 1. Food Inspection and Quarantine Technology Center, Shenzhen Entry-Exit Inspection and Quarantine Bureau, Shenzhen 518045,
    China; 2. Shenzhen Key Laboratory of Detection Technology R&D on Food Safety, Shenzhen 518045, China;
    3. College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China
  • Online:2015-05-25 Published:2015-05-08

摘要:

为探究不同条件下次氯酸钠消毒处理后对产生氨基脲残留的影响,以鸡爪为研究对象,考察次氯酸钠浓度、温度、浸泡时间、pH值等因素的影响。样品经次氯酸钠溶液处理后,在酸性条件下采用2-硝基苯甲醛进行衍生,调节pH值至中性后用乙酸乙酯提取,液相色谱-串联质谱仪进行测定,同位素内标法定量。结果表明,有效氯质量浓度、温度及浸泡时间与氨基脲产生量呈明显的正相关性;在pH 9~12范围内,鸡爪中氨基脲产生量随着浸泡溶液pH值的升高而增大。消毒处理过的样品经水漂洗后氨基脲含量减少50%~60%。

关键词: 次氯酸钠, 消毒, 鸡爪, 氨基脲, 处理条件

Abstract:

This study was concerned with the effect of disinfection with different concentrations of sodium hypochloriteunder varying conditions of temperature, soaking time and pH on the generated of semicarbazide residues in chicken claw.After samples were treated with aqueous sodium hypochlorite, the derivatization was carried out with 2-nitrobenzaldehyde inacidic conditions. The semicarbazide in the reaction system was extracted with ethyl acetate after adjusting to neutral pH foranalysis by liquid chromatography-tandem mass spectrometry and quantification by isotope internal standard method. Theresults showed that effective chlorine concentration, temperature and soaking time each had a significant positive correlationwith the yield of semicarbazide in chicken claw. The amount of semicarbazide increased with increasing pH value from 9 to12. After being rinsed with water, the content of semicarbazide was reduced by 50%–60%.

Key words: sodium hypochlorite, disinfection, chicken claw, semicarbazide, conditions

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