CN108362785A - 功能食品中非法添加化学药物的快速检测方法 - Google Patents
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Abstract
本发明涉及一种快速检测功能食品中非法添加化学药物的分析方法,包括如下内容(1)取样品粉碎、细化后经系统溶剂提取,获得样品系统提取溶液;(2)样品系统提取溶液浓缩、过滤后经气相色谱‑质谱联用仪检测;(3)样品系统提取溶液浓缩、过滤后,以硅烷化衍生试剂衍生后气相色谱‑质谱联用仪(GC‑MS)检测;(4)所得色谱‑质谱图经与标准谱图库比对后确定非法添加化学药物的种类。
Description
技术领域
本发明涉及采用系统溶剂法对功能食品中非法添加化学药物的提取,采用直接和经硅烷化衍生处理后的样品的GC-MS的检测,以及检测所得色谱-质谱图与标准谱图库进行比对后对样品中的非法添加化学药物的确认。
技术背景
食品是人类赖以生存的物质基础,随着经济的发展与生活水平的提高,人们对食品的要求已从日常饮食向预防疾病发展,达到调节改善机体生理状态的目的,加上流传几千年的药食同源的中国传统饮食文化,养生保健蔚然成风。保健食品作为一种特殊的食品由于具有营养和安全的双重作用,越来越受到人们的青睐,发展异常迅速,到2010年全国保健食品销售总额将达到2380~2780亿元。
目前,尽管国家系列法律法规陆续颁布,对功能食品进行监督管理,但是安全问题还是日益突出。一些不法企业受经济利益驱动,在功能食品中非法添加化学成分。功能食品中非法添加化学物不仅严重危害消费者的身体健康,而且极大地损害了我国保健食品产业形象,成为社会、政府关注的焦点,同时也引起了广大消费者深切关注和担忧。因此,加强对功能食品的认识,正确面对功能食品中非法添加化学成分的问题,开展相关检测、监控方法研究,保证保健食品的质量安全,具有重要现实意义。
基于此,有必要建立对功能食品中非法添加化学药物的快速检测方法。
为实现以上目的,本发明提供一下技术方案及路线:
(1)取一次口服剂量的固体样品,去除包装后,粉碎、细化,其粒度可过120目标准筛。所述的一次口服剂量的固体样品的类型包括片剂、胶囊剂、颗粒剂的任意一种。
(2)取一次口服剂量的液体样品,混匀后备用。所述的一次口服剂量液体样品的类型包括酒剂、糖浆剂的任意一种。
(3)向内容(1)和(或)内容(2)所述的样品中依次加入5mL正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈对试样进行系统提取,系统提取液经离心后获得。
(4)对内容(3)的各系统提取液浓缩。浓缩应采用减压浓缩的方式,可辅助以适当的温度,但辅助温度不应超过50℃。
(5)对内容(4)的系统提取溶液进行硅烷化衍生。硅烷化衍生体系采用常用的N-甲基三甲基硅基三氟乙酰胺或N,O-双三甲基硅基三氟乙酰胺或N, O-双三甲基硅基乙酰胺为衍生剂,三甲基碘硅烷为催化剂的硅烷化衍生体系。
(6)采用GC-MS对内容(3)和内容(4)所获得的溶液进行测定,获得色谱-质谱图。
(7)所得色谱-质谱图与标准谱库对比后,确定样品中非法添加化学药物的种类。
相对于现有技术,本发明具有如下优点及效果:
待测样品经过系统溶剂提取后,不同极性的非法添加化学药物均可被有效提取,有效的降低漏检率。
系统提取溶液采用直接进样检测和硅烷化衍生进样检测两种模式进行处理,提高了高沸点、难气化化合物的检出率。
采用该方法对功能食品中的非法添加化学物进行检测,能够在30~60分钟内完成样品的前处理、检测和数据处理过程。
该方法能够不依靠对照品,而采用谱图比对的方法确证功能食品中的非法添加化学物。
附图说明
图1 .7种降压类药物化合物对照品的GC-MS总离子流图1.尼群地平、2.尼莫地平、3.尼索地平、4.非洛地平、5.氟桂利嗪、6.卡托普利、7.可乐定
图2. 8种非甾体抗炎类药物化合物对照品的GC-MS总离子流图1.布洛芬、2.对乙酰氨基酚、3.安替比林、4.氨基比林、5.甲芬钠酸、6.双氯芬酸、7.尼美舒利、8.贝诺酯
图3. 14种镇静催眠类药物化合物对照品的GC-MS总离子流图1.巴比妥、2.异戊巴比妥、 3.司可巴比妥钠、4.苯巴比妥、5.奥沙西泮、6.劳拉西泮、7.地西泮、8.氯氮卓、9.咪哒唑仑、10.硝西泮、11.氯硝西泮、12.艾司唑仑、13.阿普唑仑、14.三唑仑
具体实施方式
以下将结合具体实施例对本发明作进一步说明,但本发明不仅限于以下实施例。
实施例(1)功能食品中7种降压类药物的快速检测
取待测样品(胶囊剂)一次口服剂量,取内容物,粉碎、细化后,加入到 15mL具塞离心管中,依次用加入5mL正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈对试样进行系统提取,系统提取液经离心后获得。将系统提取液经减压浓缩后过滤,样品直接进GC-MS进行测定。气相条件:色谱柱HP-5ms毛细管色谱柱 (柱长30m,内径0.25mm,涂布厚度0.25μm,AgilentTechnologies);程序升温(初始温度60℃,保持8min,以10℃min-1升温至280℃,保持10min。);分流比5∶1;载气(He)2.0mL min-1;进样口温度250℃;质谱条件:离子源为EI源,温度为230℃;电子轰击能量70eV;质量分析器为四极杆,Scan模式,质量扫描范围:30~400amu;进样量1μL。色谱图见图1及表1。
实施例(2)功能食品中8种非甾体抗炎药类药物的快速检测
取待测样品(片剂)一次口服剂量,取内容物,粉碎、细化后,加入到15mL 具塞离心管中,依次用加入5mL正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈对试样进行系统提取,系统提取液经离心后获得。将系统提取液经减压浓缩后过滤,样品直接进GC-MS进行测定。气相条件:DB-5ms弹性石英键合毛细管柱;程序升温条件(初始温度120℃,保持1min,以10℃.min-1升温至230℃,以 15℃.min-1升温至270℃,保持20min;分流比5∶1;载气(He,纯度大于99.99%) 流速1.7mL.min-1;进样口温度280℃;接口温度300℃;采用恒压模式,柱压135kPa;进样量1μL;质谱条件:电子轰击电离源(EI,70ev)温度为250℃; Scan模式采集,扫描的质量范围:40~350amu,溶剂延迟时间2.5min。色谱图见图2及表2。
实施例(3)功能食品中14种镇静催眠类药物的快速检测
取待测样品(口服液)一次口服剂量,取内容物,加入到15mL具塞离心管中,依次用加入5mL正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈对试样进行系统提取,系统提取液经离心后获得。将系统提取液经减压浓缩后,加入硅烷化试剂N-甲基三甲基硅基三氟乙酰胺0.1mL和催化剂三氟碘硅烷0.5mL,充氮气后,80℃衍生0.5小时,氮吹去除对于衍生剂和催化剂后,残渣用乙腈溶解, GC-MS进行测定。气相条件:DB-5ms弹性石英键合毛细管柱;程序升温条件(初始温度120℃,保持1min,以10℃.min-1升温至230℃,以15℃.min-1升温至 270℃,保持20min;分流比5:1;载气(He,纯度大于99.99%)流速1.7mL min-1;进样口温度280℃;接口温度300℃;采用恒压模式,柱压135kPa;进样量1μL;质谱条件:电子轰击电离源(EI,70ev)温度为250℃;Scan模式采集,扫描的质量范围:40~350amu,溶剂延迟时间2.5min。色谱图见图3及表3。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
表1 7种降压类药物标准谱库信息
表2 8种非甾体抗炎类药物标准谱库信息
表3 14种镇静催眠类药物标准谱库信息
Claims (5)
1.一种快速检测功能食品中非法添加化学药物的方法,其特征在于包括以下内容:
(1)取一次口服剂量的固体样品,去除包装后,粉碎、细化,其粒度可过120目标准筛。所述的一次口服剂量的固体样品的类型包括片剂、胶囊剂、颗粒剂的任意一种。
(2)取一次口服剂量的液体样品,混匀后备用。所述的一次口服剂量液体样品的类型包括酒剂、糖浆剂的任意一种。
(3)向内容(1)和(或)内容(2)所述的样品中依次加入5mL正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈对试样进行系统提取,系统提取液经离心后获得。
(4)对内容(3)的各系统提取液浓缩。
(5)对内容(4)的系统提取溶液进行硅烷化衍生。
(6)采用GC-MS对内容(3)和内容(4)所获得的溶液进行测定,获得色谱-质谱图。
(7)所得色谱-质谱图与标准谱库对比后,确定样品中非法添加化学药物的种类。
2.根据权利要求1所述的功能食品中非法添加化学药物的检测方法,其特征在于,内容(3)所述的系统溶剂提取,即对样品一次采用5mL的正己烷、二氯甲烷、乙酸乙酯、丙酮、乙腈进行提取,并获得系统提取溶液。
3.根据权利要求1所述的功能食品中非法添加化学药物的检测方法,其特征在于,内容(5)所述的对系统提取溶液进行硅烷化衍生,硅烷化衍生体系采用常用的N-甲基三甲基硅基三氟乙酰胺或N,O-双三甲基硅基三氟乙酰胺或N,O-双三甲基硅基乙酰胺为衍生剂,三甲基碘硅烷为催化剂的硅烷化衍生体系。
4.根据权利要求1所述的功能食品中非法添加化学药物的检测方法,其特征在于,内容(6)所述的对内容(4)和内容(5)所获得样品的GC-MS的检测,以及获得色谱-质谱图。
5.根据权利要求1所述的功能食品中非法添加化学药物的检测方法,其特征在于,内容(7)所述的检测所得色谱-质谱图经与标准谱图库进行比对后,可以确定样品中的非法添加化学药物。
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