长沙上禾生物HPLC法测定博落回中的血根碱与白屈菜碱 | ||||||||||||||||||||||||||||||||||||
发布时间:2019-09-17 信息来源:admin 发布人:admin 点击次数:2314 | ||||||||||||||||||||||||||||||||||||
HPLC法测定博落回中的血根碱与白屈菜碱 1)试剂 a. 乙腈(色谱纯) b. 重蒸水 c.磷酸二氢胺(分析纯)d.磷酸(优级纯) 2)仪器 高效液相色谱仪(Shimadzu) 分析天平(1/10000) 超声波清洗仪 0.45 mm微孔过滤器 50 ml 容量瓶 带塞小玻璃瓶 3)色谱条件 色谱柱 Kromasil C18 5 mm 4.6′200mm 大连化物所 波长 270nm 流动相 A:0.01mol/l磷酸二氢胺,用2%磷酸调pH到3 B:乙腈 流速 1.0 ml/min 进样量 10 ml 梯度:
4)样品制备 1) 待测样品 精确称取30mg提取物于50ml容量瓶中,用1%磷酸超声溶解,冷却定容,0.45 mm微孔滤膜过滤为供试液。 2) 标样制备 精密称取标样用磷酸溶解,使其浓度为0.1mg/ml,过0.45mm滤膜,置冰箱贮存。
5)计算 根据各峰峰面积利用外标法计算各种成份的含量。
Determination of Sanguinarine and Chelerythrine by HPLC 1) Reagents a. Acetronitrile(HPLC) b. Nanopure water c.NH4H2PO4 (A.R) d.Phosphoric acid(A.R) 2) Apparatus HPLC (Shimadzu) Analytical balance (1/10000) Ultrasonic cleaner 0.45μm PTFE filter 50ml volumetric flask Screw cap vials 3) HPLC condition Column: Kromasil C18 5mm 4.6×200mm Detector: UV 270nm Mobile Phase: A=0.01mol/L NH4H2PO4 use 2%Phosphoric acidto adjust Ph=3 B=Acetronitrile Flow Rate: 1.0 ml/min Injection: 10μl Gradient:
4) Procedure Samples Preparation Accurately weigh 30mg extraction into 50ml volumetric flask. Add 1% Phosphoric acid to volume and sonicate to mix, filter through a 0.45μm PTFE filter into a screw cap vial and proceed with the analysis. Standard preparation /calibration Prepare a standard solution (approximately 0.1mg/ml in 1% Phosphoric acid) using a standard of Sanguinarine and Chelerythrine,Sonicate for about 10 minutes and transfer to screw-cap vials and can be stored in the refrigeration. 5) Calculation Determine the peak areas of the Sanguinarine and Chelerythrine acid on the sample chromatogram and compare to the corresponding peaks in the chromatogram for the standard solution. Calculate the weight percent.
博落回提取物 1-60% --长沙上禾生物
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