食品科学 ›› 2009, Vol. 30 ›› Issue (22): 280-282.doi: 10.7506/spkx1002-6300-200922065

• 分析检测 • 上一篇    下一篇

气相色谱- 质谱法分析螺旋藻中脂肪酸

许 华,潘灿平*   

  1. 中国农业大学理学院
  • 收稿日期:2008-12-03 出版日期:2009-11-15 发布日期:2010-12-29
  • 通讯作者: 潘灿平 E-mail:xuhua1976@sohu.com

Analysis of Fatty Acids in Spirulina by Gas Chromatography-Mass Spectrometry

XU Hua,PAN Can-ping*   

  1. College of Science, China Agricultural University, Beijing 100094
  • Received:2008-12-03 Online:2009-11-15 Published:2010-12-29
  • Contact: PAN Can-ping E-mail:xuhua1976@sohu.com

摘要:

建立用毛细管柱气相色谱- 质谱法(GC-MS)分析螺旋藻中脂肪酸组成及亚麻酸含量的方法。螺旋藻中的脂肪酸用质谱进行定性确证分析,螺旋藻的脂肪酸组成用总离子流色谱图(TIC)归一化法计算。同时通过TIC 使用外标法对螺旋藻中的亚麻酸含量进行定量分析。质谱定性结果表明所检螺旋藻中含有10 种不饱和脂肪酸,根据峰面积归一法不饱和脂肪酸占46.774%,而γ- 亚麻酸含量高达26.702%。GC-MS 定量分析螺旋藻中亚麻酸在50.0~5000.0μg/ml 质量浓度范围内有较好的线性关系,线性方程为Y=15843X - 533217,R2=0.9986。定量分析结果表明所检螺旋藻中两种亚麻酸总量为396mg/100g,而γ- 亚麻酸为393mg/100g。

关键词: 螺旋藻, 脂肪酸组成, 气相色谱-质谱法(GC-MS)

Abstract:

A gas chromatography-mass spectrometry (GC-MS) method was established to identify compositions of fatty acids and determine the content ofγ-linolenic acid in Spirulina. The compositions of fatty acids in Spirulina were identified through MS and γ -linolenic acid was quantitatively determined by a normalization method of total ion chromatograph. Qualitative analysis results revealed that 10 unsaturated fatty acids were detected and the content of unsaturated fatty acids was 46.774%; meanwhile, the content ofγ-linolenic acid was 26.702%. The determination ofγ-linolenic acid using GC-MS was expressed to be Y = 15843X-533217 with a correlation coefficient of 0.9986. An excellent linear range forγ-linolenic acid was 50.0 -5000.0 μg/ml. Total content of linolenic acid in Spirulina was 396 mg/100 g andγ-linolenic acid was 393 mg/100 g.

Key words: Spirulina, fatty acid, gas chromatography-mass spectrometry (GC-MS)

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