長(zhǎng)沙上禾生物HPLC法測(cè)定博落回中的血根堿與白屈菜堿 | ||||||||||||||||||||||||||||||||||||
發(fā)布時(shí)間:2019-09-17 信息來源:admin 發(fā)布人:admin 點(diǎn)擊次數(shù):2433 | ||||||||||||||||||||||||||||||||||||
HPLC法測(cè)定博落回中的血根堿與白屈菜堿 1)試劑 a. 乙腈(色譜純) b. 重蒸水 c.磷酸二氫胺(分析純)d.磷酸(優(yōu)級(jí)純) 2)儀器 高效液相色譜儀(Shimadzu) 分析天平(1/10000) 超聲波清洗儀 0.45 mm微孔過濾器 50 ml 容量瓶 帶塞小玻璃瓶 3)色譜條件 色譜柱 Kromasil C18 5 mm 4.6′200mm 大連化物所 波長(zhǎng) 270nm 流動(dòng)相 A:0.01mol/l磷酸二氫胺,用2%磷酸調(diào)pH到3 B:乙腈 流速 1.0 ml/min 進(jìn)樣量 10 ml 梯度:
4)樣品制備 1) 待測(cè)樣品 精確稱取30mg提取物于50ml容量瓶中,用1%磷酸超聲溶解,冷卻定容,0.45 mm微孔濾膜過濾為供試液。 2) 標(biāo)樣制備 精密稱取標(biāo)樣用磷酸溶解,使其濃度為0.1mg/ml,過0.45mm濾膜,置冰箱貯存。
5)計(jì)算 根據(jù)各峰峰面積利用外標(biāo)法計(jì)算各種成份的含量。
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% --長(zhǎng)沙上禾生物
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