目的:建立栀子HPLC数字化指纹图谱并进行统一化研究。方法:采用反相高效液相色谱法,使用CenturySILC。。BDS柱(20cm×4.6mm,5μm),以1%醋酸水一1%醋酸乙腈为流动相,低压线性梯度洗脱,检测波长265nm,柱温(30.0±0.15)℃,进样量5μL,测定10批不同产地栀子HPLC指纹图谱。以色谱指纹图谱指数F和色谱指纹图谱信息量指数,等指标定性、定量评价不同产地栀子药材质量。用方向余弦阐明大峰对相似度的影响,建立了比率定性相似度的消除方法。结果:以栀子苷峰为参照物峰,确定35个共有峰,建立了栀子HPLC数字化指纹图谱和统一化指纹图谱。结论:所建立的指纹图谱具有较好的精密度和重现性,可作为栀子药材质量控制和真伪鉴别的依据。
AIM : To establish a novel method for the overall quality control of Fructus Gardeniae by HPLC digi- tized fingerprint and its normalization, METHODS: The chromatographic fingerprints were obtained by injecting 5 μL of the sample solution each time on a Century SIL C18 BDS column (20 cm×4.6 mm, 5 μm) with the gradient elution solvent system composed of 1% acetate acid-water and 1% acetate acid- acetonitrile. The flow rate was 1.0 mL/min, the column temperature was maintained at (30±0.15 )℃ and the detection wavelength was set at 265 nm. The chromatographic fingerprints were evaluated by the digitized parameters, such as the chromatographic fingerprint index (F) , quantitative similarity, etc,. The influence of big peak on similarity was elaborated by di- rection cosines, and its cancellation was achieved by the qualitative similarity of peak area ratio. RESULTS: 35 co-possessing peaks were selected as the fingerprint peaks of Fructus Gardeniae by taking Geniposide peak as the reference peak. The HPLC digitized fingerprint and its normalization were implemented. CONCLUSION: This method with good precision and reproducibility can be useful in the quality control of Fructus Gardeniae.