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植物研究 ›› 2006, Vol. 26 ›› Issue (5): 629-632.doi: 10.7525/j.issn.1673-5102.2006.05.023

• 论文 • 上一篇    下一篇

高效液相色谱法测定大豆乳清提取物中大豆异黄酮的含量

井乐刚1;张永忠2*   

  1. (1.哈尔滨师范大学阿城学院生命科学系,阿城 150301) (2.东北农业大学理学院,哈尔滨 150030)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-09-20 发布日期:2006-09-20
  • 通讯作者: 张永忠
  • 基金资助:
     

Determination of soybean isoflavones extracted from soybean whey by HPLC

JING Le-Gang;ZHANG Yong-Zhong*   

  1. (1.Department of Life science, Acheng College, Harbin Normal University, Acheng 150301) (2.College of Science, Northeast Agricultural University, Harbin 150030)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-09-20 Published:2006-09-20
  • Contact: ZHANG Yong-Zhong
  • Supported by:
     

摘要: 建立了大豆乳清提取物中大豆异黄酮含量的高效液相色谱测定方法。采用Nova-Pak C18(3.9×150 mm,4 μm)色谱柱;以甲醇:0.4%磷酸=30:70(v/v)为流动相分析染料木苷和黄豆苷;流速为0.7 mL·min-1;柱温为30℃;检测波长为260 nm。试验结果表明,大豆乳清提取物中的大豆异黄酮含量为72.5%,其组成以染料木苷和黄豆苷为主,二者比例接近1∶1,苷元型大豆异黄酮未检出。染料木苷和黄豆苷的平均回收率分别为98.1%和98.4%,相对标准偏差(RSD)分别为0.7%(n=5)和0.8%(n=5)。该方法快速、准确、重复性好。

关键词: 大豆异黄酮, 高效液相色谱, 大豆乳清

Abstract: A method for the determination of soybean isoflavones extracted from soybean whey by HPLC was established. Nova-Pak C18 column (3.9×150 mm, 4 μm) was used. Genistin and daidzin were separated by mobile phase: methanol-0.4% phosphoric acid solution = 30:70 (v/v). The flow rate was 0.7 mL·min-1. The column temperature was 30℃. The UV detection wavelength was 260 nm. The results showed that the content of soybean isoflavones in the soybean whey extract was 72.5%. Genistin and daidzin were the major components in the soybean isoflavones, and the ratio of the two components was nearly 1∶1. The isoflavone aglycons were not found by HPLC. The average recoveries of genistin and daidzin were 98.1% and 98.4% respectively, and the relative standard deviations of genistin and daidzin were 0.7% (n=5) and 0.8% (n=5) respectively. The method was rapid, accurate and with good reproducibility.

Key words: soybean isoflavones, high performance liquid chromatography, soybean whey

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