NY/T 1573-2007
ActiveThe Method of Identification Irradiated Animal Food Containing Bone with ESR Spectroscopy
辐照含骨类动物源性食品的鉴定 — HSR法
Catalogue
前言 → 1 范围 → 2 原理 → 3 仪器和设备 → 4 检测 → 5 图谱分析与结果计算 Foreword → 1 Scope → 2 Principle → 3 Instruments and Equipment → 4 Detection → 5 Spectrum Analysis and Result Calculation
Scope
This standard specifies the method for identification of irradiated animal-derived food containing bone. This standard is applicable to the identification of whether animal-derived food containing bone has been irradiated or not.
本标准规定了辐照含骨类动物源性食品的鉴定方法。本标准适用于含骨类动物源性食品辐照与否的鉴定。
Keywords
Application Summary AI generated
Food testing laboratories and regulatory authorities use this standard to determine whether bone-containing animal-derived foods have been irradiated. It relies on ESR spectroscopy to detect long-lived free radicals produced by irradiation, ensuring accurate food labeling and consumer protection. This standard is crucial for combating undeclared irradiation, maintaining food safety, and facilitating international trade compliance.
食品检测机构和监管部门使用本标准来鉴定含骨类动物源性食品是否经过辐照处理。该标准通过ESR波谱技术检测辐照产生的自由基，确保食品标签的真实性和消费者知情权。它对于打击非法辐照食品、保障食品安全和国际贸易合规具有重要意义。
AI Summary AI generated
This standard specifies a method using Electron Spin Resonance (ESR) spectroscopy to identify whether bone-containing animal-derived foods have been irradiated. The principle is based on the detection of long-lived free radicals generated in calcified bone tissue by irradiation, indicated by an asymmetric split peak in the ESR spectrum. The standard details sample preparation (removing meat and marrow, freeze-drying, grinding), measurement conditions (X-band, specific magnetic field and modulation parameters), and result analysis (calculating the g-factor). It is intended for use by food testing laboratories to verify irradiation status.
本标准规定了利用电子自旋共振（ESR）波谱技术鉴定含骨类动物源性食品是否经过辐照处理的方法。原理基于辐照在骨骼钙化物质中产生长寿命自由基，通过ESR图谱中是否出现不对称分裂峰进行判定。标准详细描述了样品制备（剔除肉和骨髓、冷冻干燥、粉碎）、测量条件（X波段、特定磁场和调制参数）以及结果分析方法（计算g值）。适用于食品检测机构对辐照食品的鉴别。
Key Sentences extracted from text
本标准规定了辐照含骨类动物源性食品的鉴定方法。
含骨类动物源性食品中都含有钙化物质;辐照能在钙化物质中产生长寿命自由基;通过电子自旋共振(ESR)波谱技术可检测出辐照后在骨组织中产生的自由基。
当样品的ESR图谱(见附录A的图A.1)是各向同性时,没有出现不对称信号(分裂峰),则样品无法判定是否被辐照过。
当样品的ESR图谱上出现不对称信号(分裂峰)时,则计算ESR光谱分裂因子g值。
产生的自由基数量随吸收剂量的增加而增加,故ESR信号强度也随吸收剂量的增加而增强。
This standard specifies the method for identification of irradiated animal-derived food containing bone.
Bone-containing animal-derived foods all contain calcified substances; irradiation can produce long-lived free radicals in calcified substances; free radicals generated in bone tissue after irradiation can be detected by electron spin resonance (ESR) spectroscopy.
When the ESR spectrum of the sample (see Figure A.1 in Appendix A) is isotropic and no asymmetric signal (split peak) appears, it cannot be determined whether the sample has been irradiated.
When an asymmetric signal (split peak) appears on the ESR spectrum of the sample, the ESR spectrum splitting factor g value is calculated.
The number of free radicals generated increases with the increase of absorbed dose, so the ESR signal intensity also increases with the increase of absorbed dose.