食品科学 ›› 2010, Vol. 31 ›› Issue (20): 402-405.doi: 10.7506/spkx1002-6630-201020084

• 分析检测 • 上一篇    下一篇

气质联用法测定丁酸单甘酯

易路遥1,2,郑为完1,*,廖和菁1   

  1. 1.南昌大学 食品科学与技术国家重点实验室
    2.江西省食品药品检验所
  • 收稿日期:2010-05-27 修回日期:2010-09-19 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 郑为完 E-mail:zheng3008@126.com

Determination of Monobutyrin by GC-MS

YI Lu-yao1,2,ZHENG Wei-wan1,*,LIAO He-jing1   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
    2. Jiangxi Provicial Institute for Drug and Food Control, Nanchang 330046, China
  • Received:2010-05-27 Revised:2010-09-19 Online:2010-10-25 Published:2010-12-29
  • Contact: ZHENG Wei-wan1 E-mail:zheng3008@126.com

摘要:

建立GC-MS 测定丁酸单甘酯含量的方法。采用DB-5MS(30m × 0.25mm,0.25μm)毛细管柱,进样口温度280℃,色谱升温条件为起始100℃,以10℃/min 升至150℃,再以30℃/min 升至250℃,保持5min,氦气流量1.0mL/min,分流比10:1。结果表明:丁酸单甘酯质量浓度在0.5~10μg/mL 范围内呈良好线性关系,线性方程Y = 146961X - 30250(r = 0.9997),平均加标回收率为99.9%,重复性实验RSD 为1.7%,最低检测限0.2ng。该方法简便、准确且重复性好,可用于丁酸甘油酯中丁酸单甘酯的含量测定。

关键词: 丁酸单甘酯, 气相色谱-质谱, 测定

Abstract:

A GC-MS method for quantitative analysis of monobutyrin was established. The determination parameters were the capillary column DB-5MS (30 × 0.25 mmm, 0.25μm), injection temperature of 280 ℃ programmed temperature increase from 100 to 150 ℃ with an increase rate of 10 ℃/min, then programmed temperature increase from 150 ℃ to final temperature of 250 ℃ at an increase rate of 30 ℃/min, helium flow rate of 1.0 mL/min and split ratio of 10:1, respectively. Results indicated that a good linear relationship between integral value (Y) of peak area and the content of monobutyrin (X) in the range of 0.5-10μg/mL was observed and the linear equation was Y=146961X-30250 (r=0.9997). Recovery rate of monobutyrin were 99.9% with the RSD of 1.7%. The limit of determination was 0.2 ng. This method is simple, accurate and reproducible so that it can be used for the determination of monobutyrin.

Key words: GC-MS, monobutyrin, determination

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