FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (6): 324-326.

Previous Articles     Next Articles

Determination of γ-Amino Butyric Acid in Lactobacillus brevis Fermentation Liquid by HPLC

 GE  Jing-Ping, CAI  Bai-Yan, SONG  Ming-Ming, LING  Hong-Zhi, SONG  Gang, PING  Wen-Xiang   

  1. Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
  • Online:2008-06-15 Published:2011-08-26

Abstract: High performance liquid chromatography with o-phthaldialdelhyde pre-colomn derivatization was used to determine the content of γ-amino butyric acid (GABA) in Lactobacillus brevis. After pre-colomn derivatization of concentrated fermentation supernatant, separation of GABA was carried out on Nova2pakC18 column with the gradient elution of 50 mmol/L acetate sodium (pH 6.8), methanol and THF (solution A 82:17:1; solution B 22:77:1, V/V). The results of accuracy and recovery rate showed that this menthod can be used to detect trace content of GABA.

Key words: HPLC, o-phthaldialdelhyde, GABA, lactid acid bacteria