王 毅,王 炯
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鉤吻HPLC指紋圖譜研究及來源分析
王 毅1,王 炯2
(1.貴陽市公安局,貴陽 550007;2.公安部物證鑒定中心,北京 100038)
ABATRACT: Objective To establish HPLC fi ngerprint of gelsemium for its different source analysis. Methods 9 batches of gelsemium collected from Guangxi, Hubei, Zhejiang and Fujian provinces were studied on their similarities. HPLC method was employed with Welchrom C18 column, and a mixture liquid of acetonitrile (A) and 0.025% trimethylamine (B) as mobile phase in a gradient elution (0 min, 0.5%A; 5 min, 1%A; 10 min, 3%A; 15 min, 8%A; 20 min, 15%A; 40 min, 30%A; 46 min,36%A; 60 min, 65%A), at a fl ow rate of 1.0 mL/min, column temperature of 30℃ and detection wavelength of 272 nm. 1 g of gelsemium plant sample was boiled in 45 mL of water for 2 hours and was concentrated by vortex fi ltration through a 0.45 μm microporous membrane. The HPLC fi ngerprints were analyzed in cluster. The sample precision, repeatability and stability were tested for at least 6 times. Results The HPLC fi ngerprint method was established with good precision, repeatability and stability, effective for the principal component analysis and cluster analysis of different-origin samples of gelsemium. 9 groups of gelsemium from different origin could be broadly divided into four categories. Gelsemium of varied sources differs in its intrinsic chemical composition, showing a different classifi cation in SPSS. Conclusions The HPLC fi ngerprint technology could provide the basis for the source analysis of gelsemium plants in vitro. Further characteristic study of the indicators is required in order to establish a more comprehensive and accurate evaluation method when involvement in poisoning cases.
摘要:目的 運用鉤吻HPLC指紋圖譜分析方法對其不同產(chǎn)地來源進行數(shù)據(jù)分析。方法 取鉤吻藥材1 g,加45 mL水,煎煮2 h,搖勻過濾,進樣量10 μL,色譜條件采用Welchrom C18 柱,洗脫流動相:乙腈(A)-0.025%三乙胺水溶液(B),梯度洗脫(0 min,0.5%A; 5 min,1%A;10 min,3%A;15 min,8%A;20 min,15%A;40 min,30%A;46 min,36%A;60 min,65%A),流速為1.0 mL/min,柱溫30 ℃,檢測波長272 nm。分別測定9批鉤吻的樣本圖譜,對其進行聚類分析和相似度分析。結果 建立了鉤吻的指紋圖譜測定方法,該方法精密度、重復性、穩(wěn)定性良好。利用該方法對不同產(chǎn)地來源樣品進行主成分和聚類分析,結果顯示9批不同產(chǎn)地的鉤吻藥材成分大致可分為四類,不同產(chǎn)地來源的鉤吻其內在化學成分均有差異,呈現(xiàn)出不同的分類。結論 指紋圖譜技術可為判斷體外鉤吻不同產(chǎn)地來源提供分類依據(jù)。
關鍵詞:鉤吻;HPLC指紋圖譜;來源分析
指紋圖譜是指樣本經(jīng)適當處理后,采用一定的分析手段,得到的能夠標示其化學特征的色譜圖或光譜圖,是一種綜合的,可量化的鑒定手段,其中在中藥材質量控制運用尤為廣泛。而現(xiàn)今法醫(yī)毒理學對司法鑒定結果解釋的進一步要求,不僅僅是單一化學結構鑒定,還應包括來源、因果關系等方面[1]。中藥指紋圖譜技術對于植物化學成分采取“整體的”、“模糊的”方法來進行分析[2],法醫(yī)毒物檢驗擬在共性中通過聚類分析差異,又可對不同產(chǎn)地來源的植物進行甄別,從而判斷毒物來源,在此基礎上進一步進行血清藥物化學的分析,更能對中毒人員吸收方式、時間、效果(即因果關系)進行分析。……