GU Chao, YUE Xian-ke, DU Wei-feng, et al. Establishment of NIRS Quantitative Model for Synchronous Quantitative Detection of Contents of Three Alkaloids in Corydalis Rhizoma[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(3): 60-65.
GU Chao, YUE Xian-ke, DU Wei-feng, et al. Establishment of NIRS Quantitative Model for Synchronous Quantitative Detection of Contents of Three Alkaloids in Corydalis Rhizoma[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(3): 60-65. DOI: 10.13422/j.cnki.syfjx.2017030060.
Objective: To establish the near-infrared spectroscopy(NIRS) quantitative model to determine the contents of dehydrocorydaline
tetrahydropalmatine and corydaline in Corydalis Rhizoma rapidly. Method: High performance liquid chromatography (HPLC) was used to determine the authentic contents of dehydrocorydaline
tetrahydropalmatine and corydaline in Corydalis Rhizoma.The spectrum was collected through near infrared diffuse reflection spectroscopy. Then the authentic contents were corresponded to the near infrared spectrum one by one. The correction model was established by partial least squares(PLS) and optimized by multiple scattering correction (MSC) & first derivative. Result: Correlation coefficient (R) was 0.987
0.998
and 0.997 respectively fordehydrocorydaline
tetrahydropalmatine
and corydalinecorrection models respectively. The validation set indicated that the correlation coefficient between predicted content and authentic content of dehydrocorydaline
tetrahydropalmatine and corydaline was 0.943
0.978 and 0.991 respectively
and their relative deviation was -14.75%-18.08%
-4.73%-9.23% and -10.99%-9.70% respectively. Conclusion: The established NIRS quantitative model had high prediction accuracy
and could be used to determine the contents of three alkaloids in Corydalis Rhizoma rapidly and synchronously.