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The College of Life Sciences (CLS) remains one of the most prestigious-and the oldest-colleges in Zhejiang University. This special issue, which includes 16 reviews contributed by our alumni and faculties, is dedicated to mark the 90th Anniversary of CLS. The reviews provide a glimpse of current progresses in the areas of life sciences such as biochemical processes and their association with diseases (Ding et al., 2019; Hu et al., 2019; Jin et al., 2019; Nie and Yi, 2019), cancer biology (Feng, 2019; Huang et al., 2019; Leonard and Zhang, 2019; Zhu F et al., 2019), plant and environmental microbiology (Li et al., 2019; Yang et al., 2019; Zhu XR et al., 2019), cell cycle (Gao and Liu, 2019; Zhang et al., 2019), RNA biology (Gudenas et al., 2019; Luo et al., 2019), and protein structural biology (Yang and Tang, 2019).
RESUMEN
<p><b>OBJECTIVE</b>To study the contents of main chemical compounds, such as, paeonol, paeoniflorin and their similar compounds in structure in Paeonia ostii and P. suffruticosa, and to find their quality difference.</p><p><b>METHOD</b>HPLC was used. The contents of paeoniflorin and paeonol in 9 collected samples, 5 from P. ostii and 4 from P. suffruticosa, and 6 herb samples bought from different areas were analyzed. The rough contents of 3 paeonol similar compounds and 2 paeoniflorin similar compounds were investigated.</p><p><b>RESULT AND CONCLUSION</b>1. There is no obvious difference in the contents of paeonol and paeonoflorin and the constitution of other main compounds between P. ostii and P. suffruticosa. Since they belong to different botanic species, it is suggested that both P. ostii and P. suffruticosa should be recorded in Chinese Pharmacopoeia as the origin of Cortex Paeoniae. 2. The glucosides of paeonol might change to paeonol in the course of the collecting and processing of the herb. Therefore when the contents of paeonol is used as the standard to evaluate the quality of the material and patent medicine, the attention should be paid to the transformation mentioned above.</p>