建立了粮食及其制品中6种玉米赤霉烯酮类物质(α-玉米赤霉醇、β-玉米赤霉醇、α-玉米赤霉烯醇、β-玉米赤霉烯醇、玉米赤霉酮和玉米赤霉烯酮)的超高效液相色谱-串联质谱(UPLC-MS/MS)检测方法.样品用84%(体积分数)乙腈水溶液提取,通过ENVI-Carb石墨化炭黑(GCB)固相萃取柱进行富集净化,用6 mL二氯甲烷-甲醇(7∶3, v/v)溶液洗脱,采用UPLC-MS/MS进行测定.在ACQUITY UPLCTM BEH C18反相柱上分离,梯度洗脱,流动相为水和乙腈;质谱采集模式为电喷雾负离子多反应监测模式.以α-玉米赤霉烯酮-d4为内标,6种目标物的线性范围为0.1~50 μg/L,相关系数(R2)大于0.99,检出限为0.1~0.2 μg/kg, 3个不同水平的加标平均回收率为79.9% ~104.0% ,相对标准偏差不大于10% .应用该方法对北京市的粮食及相关产品进行了分析,结果发现玉米赤霉烯酮的检出率最高,含量为0.42~220.7 μg/kg;此外还检出了α-和β-玉米赤霉烯醇.该方法具有操作简单、灵敏度高、重现性好等特点,符合食品样品中痕量污染物的检测要求.
参考文献
[1] | Richard J L.Int J Food Microbiol,2007,119(1/2):3 |
[2] | Zinedine A,Soriano J M,Moltó J C,et al.Food Chem Toxicol,2007,45(1):1 |
[3] | Richardson K E,Hagler W H,Mirocha C J.J Agric Food Chem,1985,33(5):862 |
[4] | Kleinova M,Zllner P,Kahlbacher H,et al.J Agric Food Chem,2002,50(17):4769 |
[5] | Jodlbauer J,Zllner P,Lindner W.Chromatographia,2000,51(11/12):681 |
[6] | Su F R,Wang S X,Sun H,et al.Science and Technology of Cereals,Oils and Foods (苏富荣,王松雪,孙辉,等.粮油食品科技),2007,15(6):57 |
[7] | Urraca J L,Benito-Pea E,Pérez-Conde C,et al.J Agric Food Chem,2005,53(9):3338 |
[8] | Kruger S C,Khon B,Ramsey C S,et al.J AOAC Int,1999,82(6):1364 |
[9] | AOAC Official Method 985.18,1995 |
[10] | Zeng H Y,Li Y Q,Jing H Q.Chinese Journal of Analytical Chemistry (曾红燕,黎源倩,敬海泉.分析化学),2006,34(3):351 |
[11] | Ren Y P,Zhang Y,Shao S L,et al.J Chromatogr A,2007,1143:48 |
[12] | Shumacher R,Krska R,Grasserbauer M,et al.Fresenius' J Anal Chem,1998,360(2):241 |
[13] | Fazekas B,Tar A.J AOAC Int,2001,84(5):1453 |
[14] | Biselli S,Hummert C.Food Addit Contam,2005,22(8):752 |
[15] | Biselli S,Hartig L,Wegner H,et al.Spectroscopy,2005,20(2):20 |
[16] | Cavaliere C,Foglia P,Pastorini E,et al.J Chromatogr A,2006,1101:69 |
[17] | Zheng P,Sheng X,Yu X F,et al.Chinese Journal of Chromatography (郑屏,盛旋,余晓峰,等.色谱),2006,24(1):62 |
[18] | 2002/657/EC |
[19] | Matuszewski B K,Constanzer M L,Chavez-Eng C M.Anal Chem,2003,75(13):3019 |
[20] | Briones-Reyes D,Gómez-Martinez L,Cueva-Rolón R.Food Chem,2007,100(2):693 |
[21] | Li R T,Xie G,Fu P C,et al.Grain Storage (李荣涛,谢刚,付鹏程,等.粮食储藏),2004,32(5):36 |
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