Correction: Yu, D.Q., et al. Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts. Molecules 2019, 24, 4548.

The authors would like to correct an error in the title paper [...].

Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts.

The accumulation of chemical constituents of some medicinal plants, such as Paeonia ostii T. Hong et J. X. Zhang, Houpoëa officinalis (Rehder and E. H. Wilson) N. H. Xia and C. Y. Wu. and Atractylodes lancea (Thunb.) DC, can precipitate on the surface and form frosts after natural or artificial intervention. The characteristics of these three medicinal plants and their frosts were analyzed by light microscope, polarizing microscope, stereomicroscope, and metalloscope. The results of ordinary Raman of P. ostii and H. officinalis showed that the frosts of P. ostii matched paeonol, while that of H. officinalis matched magnolol and honokiol. In P. ostii and its frost, 19 peaks were identified by UPLC-Q/TOF-MS, and the main component was paeonol. Eleven components were identified in H. officinalis and its frosts, and the main components were magnolol and honokiol. A. lancea and its frosts were analyzed by gas chromatography-mass spectrometry (GC-MS), 21 were identified, and its main components were hinesol and ß-eudesmol. These three medicinal plants accumulate compounds and precipitate frosts on the surface. The results show that the components of the frosts provide a basis for quality evaluation and research on similar medicinal plants, and reveals the scientific connotation of "taking the medicinal materials' precipitated frosts as the best" of P. ostii, H. officinalis, and A. lancea, to some extent.

[Rapid identification for fruit drugs of rosaceae based on electrochemical oscillation reaction].

OBJECTIVE: To establish a rapid identification method for fruit drugs of Rosaceae, according to the influence of Chinese traditional medicine on the electrochemical oscillation reaction. METHODS: The experiments were carried out in H2SO4-Ce (SO4)2-CH2 (COOH)2-KBrO3 electrochemical oscillation system. The graphs and characteristic parameters which were formed by the disturbance of Rosaceous fruit drugs to the electrochemical oscillation reaction were studied. RESULTS: There were obvious distinction on the electrochemical fingerprints of five kinds of medicinal materials, and the characteristic parameters of oscillation life were significant different. CONCLUSION: The electrochemical fingerprints of five kinds of Rosaceous fruit drugs can be used to identify those medicinal materials. The method is simple, rapid, economic and reliable.