@article {755, title = {Comparison between High Performance Thin Layer Chromatography and High Performance Liquid Chromatography Methods for Determination of Rubraxanthone in the Stem Bark Extract of Garcinia cowa Roxb}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {November 2018}, pages = {s42-s47}, type = {Original Article}, chapter = {s42}, abstract = {

Objectives: To develop simple, rapid, accurate methods for determination of rubraxanthone in the stem bark extract of Garcinia cowa using High Performance Thin Layer Chromatography (HPTLC) and High Performance Liquid Chromatography (HPLC). Methods: The HPTLC method was performed on aluminum plate precoated with silica gel 60 F254 using Chloroform: Ethyl acetate: Methanol: Formic acid (88:2:2:8) as a developing system. Quantification was achieved using densitometric measurements at 243 nm. The HPLC method involved a 5 \μm C18 column and an isocratic solvent using 0.4\% formic acid: methanol (12:88) with a flow rate 1 mL minute-1. Quantitation was also achieved with ultraviolet detection at 243 nm based on peak area. All necessary validation tests for both methods were done for their comparison. The results obtained by these two different quantification methods were compared by Tukey\’s-test. Results: Both assays provided good linearity, accuracy, precision, specificity and limits of detection and quantitation for determination of rubraxanthone in The Stem Bark extract of G. cowa. Conclusion: Both methods revealed reasonable validation parameters concerning linearity, accuracy, precision, specificity and limits of detection and quantitation. A statistical comparison of the quantitative analysis of rubraxanthone in extract did not show any statistically significant difference between two analysis methods. As both methods were found to be equal, they therefore can be used for the analysis of rubraxanthone in the Stem Bark extract of G. cowa.

}, keywords = {Garcinia cowa Roxb, High Performance Liquid Chromatography, High performance Thin layer Chromatography, rubraxanthone}, doi = {10.5530/pj.2018.6s.8}, author = {Meri Susanti and Sanusi Ibrahim and Yahdiana Harahap and Dachriyanus} } @article {194, title = {Analytical Quantifiation, immunomodulatory and Sulforhodamine B assay studies on Albizia lebbeck Leaves Extracts}, journal = {Pharmacognosy Journal}, volume = {8}, year = {2016}, month = {Oct 2016}, pages = {476-482}, type = {Original Article}, chapter = {476}, abstract = {

Background: Albiza lebbeck leaves have been well known for its ethnopharmacological prospects. Objective: The present study aims three extracts (aqueous, methanolic and hydromethanolic) at two dose levels by oral administration by using immunomodulatory models and in vitro cell lines in correlation to analytical studies. Methods: The extracts were subjected to Haemagglutination Antibody Titre and DTH Delayed-Type Hypersensitivity reaction based on acute toxicity results. Chromatographic studies were undertaken comprising of Fourier Transform Infrared Spectroscopy and High performance Thin layer Chromatography and screened for in-vitro cell lines such as MCF-7 and HCT 15 by Sulforhodamine B Assay Method. Results: No response was shown at 100 mg/kg. Significant immunomodulatory effect was noticed at 200 mg/kg with Haemagglutination Antibody Titre (554.66 \± 102.78, 597.33 \± 85.35, 426.66 \± 53.98) and DTH Delayed- Type Hypersensitivity reaction (0.225\±0.01, 0.21 \± 0.01, 0.23 \± 0.01) which showed decrease in paw volume (after 48 h) in case of Sheep Red Blood Cells, (0.5\×109) used as antigens. Total flavonoids content in the extracts were revealed by methods described by Singleton and Quettier. Flavonols such as rutin and quercetin were detected by Fourier Transform Infrared Spectroscopy based on determination of the functional groups and High Performance Thin layer Chromatography showed well resolved spots. The extracts were screened on in-vitro cell lines (MCF 7 and HCT 15) by using Sulforhodamine B Assay method were unsatisfactory results were obtained at final concentrations of 10 \μg/ml, 20 \μg/ml, 40 \μg/ml, 80 \μg/ml. Conclusion: Thus, present paper suggests that extracts has served as a promising immunomodulator for immune system disorders.

}, keywords = {Delayed-Type Hypersensitivity response, Fourier Transform Infrared Spectroscopy, Haemagglutination Antibody Titre, High performance Thin layer Chromatography, MCF-7., Quercetin, Rutin}, doi = {10.5530/pj.2016.5.11}, author = {Gaurav Mahesh Doshi and Manjushree kundalik Pawar and Kajal Haribhai Chavda} } @article {1508, title = {Comparative Studies on Antioxidant Activity, Total Phenol Content and High Performance Thin Layer Chromatography Analysis of Seabuckthorn (Hippophae rhamnoides L) Leaves}, journal = {Pharmacognosy Journal}, volume = {6}, year = {2014}, month = {2nd July 2014}, pages = {5-8}, type = {Original Article}, abstract = {

Background: Seabuckthorn (SBT) is a high altitude medicinal plant with vast history of use in traditional medicinal systems such as Tibetan and Chinese systems. SBT leaves have shown range of pharmacological properties suggesting their importance to be used for product development. Objective: The aim of this study was to compare 75\% ethanolic extracts of male and female SBT leaves on the basis of antioxidant activity, total phenol content and high performance thin layer chromatography (HPTLC) estimation of \β-sitosterol and ursolic acid. It also involved comparison of total phenol contents of successive soxhlet extracts (pet ether, chloroform, ethyl acetate, ethanol, and aqueous) of above leaves. Materials and Methods: Antioxidant activities and total phenol contents of the extracts were evaluated by using 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging assay and Folin\–Ciocalteu reagent based assay, respectively. Results: Male leaf extract was found to show signifi cantly higher antioxidant activity and total phenol content than that of female leaves. Furthermore, the successive extracts of male leaves showed higher phenol contents than that of female leaves. However, it was not signifi cant in case of pet ether and chloroform extracts. In HPTLC estimation, concentration of \β-sitosterol in female leaf extract was observed to be less than that of male leaf extract. However, ursolic acid concentration was found to be almost same in both the type of leaf extracts. Conclusion: The results suggest the need for developing standard quality control profi le of SBT leaves, especially for product development.

Key words: Antioxidant activity, 75\% ethanolic extract, high performance thin layer chromatography, seabuckthorn, total phenol content.

}, keywords = {75\% ethanolic extract, antioxidant activity, High performance Thin layer Chromatography, seabuckthorn, total phenol content}, author = {Amrit Kumar Singh and Dharam Paul Attrey and Tanveer Naved} } @article {1515, title = {Pharmacognosy and Phytochemical Analysis of Brassica juncea Seeds}, journal = {Pharmacognosy Journal}, volume = {6}, year = {2014}, month = {2nd July 2014}, pages = {47-54}, type = {Original Article}, abstract = {

Introduction:Brassica juncea is an economically important plant that has been well-known in India for centuries for its medicinal and nutritive values. The broad spectrum of beneficial effects of the seeds perceived with this plant warrants further exploration of B. juncea seeds as a potential source for obtaining pharmacologically standardized phytotherapeutics, which could be potentially useful. The objective of the present study was to perform the pharmacognosy of mustards seeds inclusive of qualitative and quantitative phytochemical analysis, fingerprinting by infrared spectroscopy and high performance thin layer chromatography analysis and toxicity assessment in vitro. Methods: Different sections of seeds were taken and stained with 0.1\% phloroglucinol for microscopic examination. The seeds were extracted by 80\% alcohol on a rotary shaker to perform phytochemical analysis and fingerprinting. The toxicity assessment of this extract was performed on human dermal fibroblast cells. Results: Microscopic examination of seeds showed characteristic features of mustard seeds. The extraction of these seeds by 20\% alcohol resulted in IC50 value of 103 \± 3 \μg/mL for 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl radical scavenging assay. The fingerprinting analysis of this extract indicated probable presence of sinigrin, quercetin, vanillin, catechin, vitamin E and sulfur-containing compounds. This extract exhibited 50\% toxicity (IC50) at 1.79 mg/mL. Conclusion: The result achieved will be used to assess the therapeutic efficacy of seed extracts for future pharmacological evaluations.

Key words: Antioxidant, cytotoxicity, Fourier transform infrared spectroscopy, high performance thin layer chromatography, microscopy, phenolics.

}, keywords = {Antioxidant, Cytotoxicity, Fourier Transform Infrared Spectroscopy, High performance Thin layer Chromatography, microscopy, Phenolics}, author = {Harita Parikh and Aparna Khanna} }