ABSTRACT
The aim of the present study is to carry out the quantification of Clerodendrum serratum containing poly herbal formulations by HPTLC and to study the invitro anti-oxidant activity of nitric oxide scavenging activity of the roots of Clerodendrum serratum.The rhizome part of Clerodendrum serratum has been selected, dried, powdered and extracted with petroleum ether, chloroform, ethyl acetate and methanol successively by continuous hot percolation method using soxhlet apparatus. Preliminary phytochemical screening of the successive extracts showed the presence of chemical constituents like triterpenoids, flavonoids, alkaloids, tannins, glycosides and sesquiterpenes. The Rf value of stigmasterol was found to be 0.80 ± 0.02.The developed methods were validated as per ICH guidelines. The LOD and LOQ was found to be 100 and 300 ng/spot respectively for HPTLC. The anti-oxidant activity was highest in petroleum ether extract when compared to the other extracts by using ascorbic acid as control. This shows that the polyherbal formulation containing stigmasterol has medicinal value and that it may be utillised for its anti-oxidant properties.
ABSTRACT
Clerodendrum serratum Linn. (Family: Verbenaceae) is very widely distributed in tropical and subtropical regions of the world. Ethno-medicinal importance of the plant has been reported in various indigenous systems of medicines like Ayurveda, Siddha and Unani for the treatment of various life-threatening diseases such as syphilis, typhoid, cancer, jaundice and hypertension. Some of the chief constituents found in the plant are D-mannitol, hispidulin, cleroflavone, apigenin, scutellarein, serratagenic acid, acteoside, verbascoside, oleanolic acid, clerodermic acid, γ-sitosterol, β-sitosterol, cholestanol, clerosterol, campesterol and 24-ethyl cholesterol. Traditionally, it has been also used as anti-rheumatic, anti-asthmatic, febrifuge, in cephalagia and ophthalmia. The roots of C. serratum are also used as anti-oxidant, anti-bacterial, and anti-fungal. Besides these the antimicrobial value of this herbal plant have also been reported in its stems and leaves. These reports are very encouraging and indicate that herb should be studied more expensively for its therapeutic benefits.
ABSTRACT
Apigenin-7-glucoside, C21H20O10 (7-(β-D-glucopyranosyloxy)-5-hydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one), was first time isolated from the roots of Clerodendrum serratum (L.) Moon, Lamiaceae. Structure elucidation of the compound was carried out by ¹H NMR and FAB-MS studies.
Apigenin-7-glucosídeo, C21H20O10 (7-(β-D-glucopiranosiloxi)-5-hidroxi-2-(4-hidroxifenil)-4H-1-benzopiran-4-ona), foi isolado pela primeira vez das raízes de Clerodendrum serratum (L.) Moon, Lamiaceae. A elucidação estrutural da susbtância foi feita através de estudos de ¹H NMR e FAB-MS.