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OBJECTIVE:To establish a method for the content determination of ecdysterone in different parts of Radix serratu-lae. METHODS:HPLC was performed on the column of ZORBAX Eclipse XDB-C18 with mobile phase of methanol-water at a flow rate of 1.0 ml/min(46∶54,V/V),detection wavelength was 248 nm,column temperature was 30℃,and the injection volume was 10 μl. Compare the contents of ecdysterone in different parts of R. serratulae. RESULTS:The linear range of ecdysterone was 0.12-1.21 μg;RSDs of precision,stability and reproducibility tests were lower than 1.5%;recovery was 98.4%-101.9%(RSD=1.64,n=6). The content of ecdysterone in roots was found at the highest level,followed by tubers,and lower in stems and leaves, and it was not detected in seeds. CONCLUSIONS:The method is simple and rapid with good accuracy and reproducibility,and suitable for the content determination of ecdysterone in different parts of R. serratulae. It is feasible to develop the medicinal parts of R. serratulae from roots to roots,flowers,tubers and buds on tubers.
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Objective To explore the effects of a new simple device for blood collection by tail snipping in rats so as to provide a safe, practical and repeatable method. Methods The rats were held by simple devices which made from plastic bottles and block and treated by some moderate ways for blood collection. Results The device was easy to be made and handled. 20 rats could have 6 times of blood collec-tion by this device in one day. There was no mouse death and no person injure during the experimental course. Conclusion This device is a safe and ideal equipment for blood collection by tail snipping in rats.
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To establish the HPLC fingerprints of Eucommia ulmoides at different ages of different varieties with pi-noresinol diglucoside as the reference material to provide the basis for the HPLC fingerprints in the enterprise quality standards of Eu-commia ulmoides from the GAP base of Chenzhou Dacheng Chinese Herbal Medicine Co. Ltd. . Methods: A column of ZORBAX E-clipse XDB-C18 (250 mm × 4. 6 mm, 5μm) was used. The mobile phase consisted of methanol-0. 1% phosphoric acid with gradient e-lusion. The detection wavelength was 277 nm, the column temperature was 25℃,the flow rate was 1. 0 ml·min-1 , and the injection volume was 5 μl. Results:The Eucommia ulmoides HPLC fingerprints including 14 common peaks were established with pinoresinol diglucoside as the reference material. The similarity of the HPLC fingerprints of 10 samples was over 0. 939. Conclusion:The method is accurate and reliable. The HPLC fingerprints can be used as the enterprise quality standards of Eucommia ulmoides for Chenzhou Dacheng Chinese Herbal Medicine Co. Ltd. .
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A brief survey of the resources of fungi in Hunan Province used for medicinal purposes was carried out by studying their di stribution and cultivation.Their rational use and future pevelopment were briefly discussed.
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AIM: To compare the volatile oils of Lonicera macranthoides Hands-Mazz. from three plantation. METHODS: The volatile oil of L. macranthoides Hands-Mazz. was studied by GC-MS. RESULTS and CONCLUSION: The volatile oil in three different samples contained 26 kinds of same components: such as Linaiool, Geraniol, a-Terpineol, 1-Octen-30ol,3-Henen-1-ol and so on. The content of Linaiool was the highest which was 15.17%, 28.85% and 31.88% in L. macranthoides Hands-Mazz. from Longhui County, Xupu County and Xinning County.