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Plumbagin, a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric Determination in Roots, Stems, and Leaves in Plumbago Europaea L.

 

作者: MohammedA. Al-Nuri,   MohammedA. Hannoun,   NidalA. Zatar,   MaherA. Abu-Eid,   WaheedJ. Al-Jondi,   AhmadI. Hussein,   MohammedS. Ali-Shtayeh,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1994）
卷期: Volume 27, issue 4  

页码: 409-416

 

ISSN:0038-7010

 

年代: 1994

 

DOI:10.1080/00387019408007247

 

出版商: Taylor & Francis Group

 

关键词: Plumbagin;Isolation;Spectrophotometric Determination;Roots;Stems;Leaves;Plumbago Europaea L.;pKa;Acid-Base Indicator

 

数据来源: Taylor

 

摘要:

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pKavalue, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

 

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