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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6936

Title: Characterization and HPLC quantification of piperine isolated from piper guineense (fam. piperaceae)
Authors: Adosraku, Reimmel Kwame
Kyekyeku, James Oppong
Attah, Isaac Yaw
Keywords: Piper guineense
, Piperine
Issue Date: 2013
Publisher: International Journal of Pharmacy and Pharmaceutical Sciences
Citation: International Journal of Pharmacy and Pharmaceutical Sciences Vol 5, Issue 1, 2013
Abstract: Piperine (1 - piperoyl piperidine) is the major alkaloid responsible for the pungent smell of the West African pepper, Piper guineense, a plant whose parts are well known for their traditional indications for various ailments. The amount of piperine in the various parts of Piper guineense are however unknown. This project, seeks to develop a RP-HPLC method to standardize the various parts of Piper guineense using isolated piperine as a biomarker and a secondary reference. All samples of Piper guineense parts were obtained from the Physic garden of KNUST and authenticated by Pharmacognosy Department, KNUST, Kumasi. Piperine was isolated from the dried fruits of Piper guineense with ethanolic KOH and recrystallized from acetone: hexane (3:2). The melting point was determined to be 128oC - 130oC and the crude yield was 2.07%w/w. Thin Layer Chromatography gave Rf values of 0.285 } 0.013 for hexane: ethylactate: glacial acetic acid (3: 1: 0.3) and 0.70 } 0.010 for chloroform: ethylacetate (1: 1). The isolated piperine was characterized by carrying out NMR, UV and mass spectroscopy analyses. A validated reverse phase HPLC with methanol: water (80:20) at a flow rate of 1.40ml/min on a Phenomenex Kromosil 5 C8 (250mm x 4.6mm, 5 micron i.d.) column with detection at 343nm gave a retention time of 3.78 } 0.06 min. Piperine was found to be 0.0054 } 0.00009%w/w in the dried leaves, 0.0437 } 0.000816%w/w for fresh leaves, 0.115 } 0.00228%w/w for dried stem and 3.345 } 0.0339%w/w for dried fruits.
Description: International Journal of Pharmacy and Pharmaceutical Sciences Vol 5, Issue 1, 2013
URI: http://hdl.handle.net/123456789/6936
Appears in Collections:College of Health Sciences

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