ZHAO Yan, XU Ying, HOU Ying-ying, et al. Content Determination of 21 Kinds of Amino Acids in Ligustri Lucidi Fructus by RP-HPLC[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(14): 79-83.
ZHAO Yan, XU Ying, HOU Ying-ying, et al. Content Determination of 21 Kinds of Amino Acids in Ligustri Lucidi Fructus by RP-HPLC[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(14): 79-83. DOI: 10.13422/j.cnki.syfjx.2016140079.
Objective: To determine the contents of free amino acids and hydrolyzed amino acids from Ligustri Lucidi Fructus by pre-column derivatization RP-HPLC. Method: The samples were derived with phenylisothiocyanate (PITC) for pre-column derivatization and HPLC method was adopted. Gradient elution was applied to determine the contents of free amino acids and hydrolyzed amino acids in Ligustri Lucidi Fructus. Result: The 21 kinds of amino acids showed a good linearity in the ranges of 0.002-0.270 mmol ·L-1 with the correlation coefficients≥0.999 5.The average recovery rate was 88.33%-99.88% with relative standard deviation of 0.6%-2.5% for free amino acids
and 90.32%-99.91% with relative standard deviation of 0.5%-2.5% for hydrolyzed amino acids. Conclusion: This method is suitable for determining the contents of amino acids in Ligustri Lucidi Fructus.