A new reaction system to determine nonlinear chemical fingerprint and its use in Panax ginseng identification method based on double reaction system

Abstract

A new reaction system to determine nonlinear chemical fingerprint (NCF) and its use in identification method based on double reaction system was researched. Panax ginsengs, such as ginseng, American ginseng and notoginseng were identified by the method. The NCFs of the three samples of Panax ginsengs were determined through two nonlinear chemical systems, namely system 1 consisting of sample components, H₂SO₄, MnSO₄, NaBrO₃, acetone and the new system, system 2 consisting of sample components, H₂SO₄, (NH₄)₄Ce(SO₄)₂, NaBrO₃ and citric acid. The comparison between the results determined through systems 1 and 2 shows that the speed to determine NCF through system 2 is much faster than that through system 1; for systems 1 and 2, the system similarities of the same kind of samples are ≥ 98.09% and 99.78%, respectively, while those of different kinds of samples are ≤ 63.04% and 86.34%, respectively. The results to identify the kinds of some samples by system similarity pattern show that both the accuracies of identification methods based on single system 1 and 2 are ≥ 95.6%, and the average values are 97.1% and 96.3%, respectively; the accuracy of the method based on double system is ≥ 97.8%, and the average accuracy is 99.3%. The accuracy of the method based on double system is higher than that based on any single system.

Keywords

nonlinear chemical fingerprint / double reaction system / single reaction system / authenticity identification / Panax ginsengs

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