食品科学 ›› 2010, Vol. 31 ›› Issue (10): 188-191.doi: 10.7506/spkx1002-6630-201010038

• 分析检测 • 上一篇    下一篇

辐照鸡肉邻位酪氨酸含量检测方法的研究

林 琳1,张 可2,钱 和3,*   

  1. 1.上海市质量监督检验技术研究院 2.空军航空医学研究所 3.江南大学 食品科学与技术国家重点实验室
  • 收稿日期:2009-05-25 出版日期:2010-05-15 发布日期:2010-12-29
  • 通讯作者: 钱和 E-mail:amtf168@126.com
  • 基金资助:

    “十一五”国家科技支撑计划项目(2008BAD91B04-1);教育部创新团队基金项目(PCSIRT0627);
    教育部创新引智计划项目(111-project-B07029)

HPLC Determination of o-Tyrosine in Irradiated Chicken Products

LIN Lin1,ZHANG Ke2,QIAN He3,*   

  1. 1. Shanghai Institute of Quality Inspection and Technical Research, Shanghai 200233, China;2. Airman Aeromedicine Institution,
    Beijing 100000, China;3. State Key Laborary of Food Science and Technology, Jiangnan University , Wuxi 214122, China
  • Received:2009-05-25 Online:2010-05-15 Published:2010-12-29
  • Contact: QIAN He E-mail:amtf168@126.com

摘要:

建立辐照鸡肉中邻位酪氨酸含量的高效液相色谱检测方法。辐照鸡肉中的邻位酪氨酸经105℃,6mmol/L盐酸溶液水解4h 以上,C18 固相萃取柱净化,5% 乙腈溶液分3 次洗脱目标物,在激发波长275nm,发射波长305nm,98% 0.2mol/L NaH2PO4 水溶液和2% 乙腈作为流动相的条件下,用荧光检测器进行检测。研究表明,检出限为0.1mg/kg,加标水平在1.0mg/kg 时,回收率为97.3%。辐照剂量在10~100kGy 的范围内,辐照鸡肉中邻位酪氨酸含量与辐照剂量呈线性关系。

关键词: 邻位酪氨酸, 高效液相色谱法, 辐照鸡肉

Abstract:

A method using HPLC with fluorescence detection was developed for the determination of o-tyrosine in irradiated chicken products. Samples were hydrolyzed with 6 mmol/L HCl at 105 ℃ for 4 h in a vacuum environment and cleaned up on a C18 solid-phase extraction column. Three-time elution of the column with 5% actonitrile in water was carried out for the desorption of o-tyrosine. The excitation and emission wavelengths for fluorescence detection were set at 275 nm and 305 nm, respectively. The method exhibited a limit of detection of 0.1 mg/kg. The average spike recovery (6 replicates) for o-tyrosine at 1.0 mg/kg was 97.3%. Over the range of 10 to 100 kGy, irradiation dose displayed good linearity with o-tyrosine content of irritated chicken meat.

Key words: o-tyrosine, HPLC method, irritated chicken meat

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