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Pharmacognosy Research
An Open Access Journal in Pharmacognosy and Natural Products

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Acute oral toxicity studies of Swietenia macrophylla seeds in Sprague Dawley rats
3 (4,5‑dimethylthiazol‑2‑yl) 2,5‑diphenyltetrazolium bromide dose response curve of petroleum ether extract on different cell lines
IC50 value of 1 and Doxorubicin against a human cancer cell line colon carcinoma 116 and a noncancer cell line Chinese hamster ovary cells (AA8)
Influence of drug amount on the total flavonoid content from herbal material calculated after direct dilution
Analysis of L‑citrulline and L‑arginine in Ficus deltoidea leaf extracts by reverse phase high performance liquid chromatography
Bio‑enhancing Effect of Piperine with Metformin on Lowering Blood Glucose Level in Alloxan Induced Diabetic Mice
Percentage changes in body weight alterations of experimental animals. All the values are mean ± standard error of the mean (n = 6)
Free radical scavenging activity of hydroalcoholic extract and its fractions of Ficus benghalensis leaves measured using the 1‑1‑diphneyl‑2‑picrylhydrazyl‑assay. Results are mean ± standard error of the mean (n = 3)
Evaluation of analgesic, antipyretic and anti‑inflammatory activity on Cordia dichotoma G. Forst. Leaf
Phytochemical analysis of Asparagopsis taxiformis
Standard calibration curve for serum glutamic oxaloacetic transaminase and serum glutamic pyruvic transaminase
Cytotoxic Activity of ten Aagae from the Persian Gulf and Oman Sea on Human Beast Cancer cell lines; MDA‑MB‑231, MCF‑7, and T‑47D
High‑performance thin layer chromatography chromatograms of Benincasa hispida seeds, Carissa congesta roots and standard for quercetin
A novel reverse phase high‑performance liquid chromatography method for standardization of Orthosiphon stamineus leaf extracts
Graphical Abstract
High performance thin liquid chromatography chromatogram of standard quercetin and ethanolic extract of Abutilon indicum
Comparative study of total phenolic content and total flavonoid content of various extracts of Mimosa pudica leaves. The values were expressed as mean ± standard error of mean; *P < 0.05, **P < 0.01 versus control. ns: Not significant
(a) Preliminary phytochemical analysis of two screened plant species Moringa oleifera Lam. and Ocimum tenuiflorum L. A = Test for tannins, B = test for phlobatannins, C = test for saponins, D = test for flavonoids, E = test for terpenoids. (b) Preliminary phytochemical analysis of two screened plant species Moringa oleifera Lam. and Ocimum tenuiflorum L. A = Test for reducing sugar, B = test for alkaloids, C = test for anthraquinones
Dose-response effects of extracts N. laciniosa KUFC 7896 (a), N. fischeri KUFC 6344 (b) on cell proliferation in human caucasian colon adenocarcinoma Grade II cell line, human colorectal carcinoma cell line, human breast adenocarcinoma cell line and human malignant melanoma cell line cells after 48 h, evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide assay. Results are expressed as mean ± standard deviation of at least six independent experiments, in duplicate. Significant differenc
Evaluation of anti‑inflammatory activity of methanolic extract of leaves of Bougainvillea spectabilis in experimental animal models
Illustration of experimental design. BVEE: Beta vulgaris ethanolic extract; EPM: Elevated plus maze; FST: Forced swim test; OFT: Open field test; TST: Tail suspension test
High‑performance liquid chromatography analysis of Uncaria tomentosa extracts
Minerals salt composition and secondary metabolites of Euphorbia hirta Linn., an antihyperglycemic plant
Chemical Constituents from the Leaves of Euphorbia ammak Growing in Saudi Arabia
Erratum: Bioactivity of Diterpens from the Ethyl Acetate Extract of Kingiodendron pinnatum Rox. Hams
Extent of colonic damage according to macroscopic and microscopic scores in acetic acid‑treated rats. Values are mean ± standard error of the mean. Ferulago angulata (Schltdl.) Boiss. hydroalcoholic extract‑50: Ferulago angulata at dose of 50 mg/kg/day, Ferulago angulata (Schltdl.) Boiss. hydroalcoholic extract‑100: Ferulago angulata at dose of 100 mg/kg/day and Ferulago angulata (Schltdl.) Boiss. hydroalcoholic extract‑200: Ferulago angulata at dose of 200 mg/kg/day. (a) Significantly different from contro
Rapid Development and Validation of Improved Reversed‑Phase High‑performance Liquid Chromatography Method for the Quantification of Mangiferin, a Polyphenol Xanthone Glycoside in Mangifera indica
Total phenolic content of extracts with different solvent ratio (ethanol‑water). Values are mean ± standard deviation of triplicate analyses. Values followed by different letter are significantly different (P < 0.05)
(a-e) Macroscopic features of Justicia gendarussa. (f-k) Microscopic observations of dried roots of Justicia gendarussa
Semipermeable membrane contains calcium oxalate and extracts in Tris buffer
Review on Polygonum minus. Huds, a commonly used food additive in Southeast Asia
(a) The picture shows normal hepatocytes, central vein, and portal tracts (×40) (at column width);
Cytotoxic effect of different solvent extracts of S. nicolai on murine splenocytes after 36 h incubation
1,1‑diphenyl‑2‑picrylhydrazyl radical scavenging activity of the Tamarindus indica and Manihot esculenta extracts
Inhibition of cell proliferation by hesperetin
Effect of Moringa oleifera on hepatic inflammatory biomarkers in diabetic and nondiabetic rats. Each bar represents mean (standard deviation) of 12 rats
High‑performance liquid chromatography generated auto‑scaled chromatogram of peptide mixture (Methionine Enkephalin, Leucine Enkephalin and Angiotensin II: as a standard peptide mixture)
Percentage of wound closure between groups of treatment on different days. Values presented as mean ± standard error mean. Significant difference (P < 0.05) between (a) 5% Zingiber zerumbet rhizome ethyl acetate extract with phosphate‑buffered saline, (b) 5% Zingiber zerumbet rhizome ethyl acetate extract with solcoseryl gel; (c) day of treatment with previous day of treatment. Z. zerumbet: Zingiber zerumbet; PBS: Phosphate‑buffered saline
The total phenol concentration of fenugreek seeds and leaves in water and ethanol extracts at different time‑temperature treatment expressed as gallic acid equivalents. The results represent mean ± standard division of three independent experiments
Graphical representation of effect of capsicum extract on production of nitric oxide production in lipopolysaccharide stimulated RAW264.7 macrophages
(a‑d) Quantitative estimation of piperine in extract of Piper sylvaticum roots using high‑performance thin‑layer chromatography
Chemical structures of the two isolated saponin from Panax bipinnatifidus
Ferric‑reducing power and hydroxyl radical scavenging assays of various concentrations of CECH (a): OH•‑scavenging capacity and (b): ferric‑reducing antioxidant power. CECH: Crude extract of Combretum hypopilinum; OH•: Hydroxyl radical
Vasodilatator effects of 4‑hydroxyacetophenone on endothelium‑intact rat thoracic aorta‑induced contractions with PE
Bar graph to determine and compare the mean of sexual dysfunction improvement in depressed women after treatment rather than before in the four groups. Significant level of each group comparison with placebo; *P < 0.05, **P < 0.01, ***P < 0.001
Effect of methanolic extract of Hiptage benghalensison cytotoxicity of (a) human cervical carcinoma, (b) human breast cancer, and (c) human neuroblastoma cancer cell lines; data were mean ± standard error of the mean
High‑performance liquid chromatography chromatogram of Terminalia bellerica
 Inhibition of sPLA2 (VRV-PL-V) enzyme by ethanol extracts of medicinal plants

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Plant Habitat and close view of Punica granatum L.
Microscopical Investigation of Punica granatum L. Flower: A Traditional Drug with Vivid Therapeutic Promise
Apr 14, 2025 - 14:15
FTIR analysis of aqueous leaf extract of Hildegardia populifolia
FTIR Analysis, Total Phenolic Content, Antioxidant and Antidiabetic Activities of Hildegardia populifolia (Roxb.) Schott and Endl. (Malvaceae)
Apr 11, 2025 - 14:29
Mechanism of action of Guan-Xin-Er-Hao (GXII) and hydroxysafflor yellow A (HSYA) in ameliorating atherosclerosis in ApoE−/− mice involves antioxidant and anti-inflammatory effects. The figure illustrates the antioxidant and anti-inflammatory mechanisms of Guan-Xin-Er-Hao and Hydroxysafflor Yellow A. By balancing antioxidant enzymes and MDA production; they reduce Reactive Oxygen Species (ROS); thereby alleviating endothelial dysfunction and oxidative stress. ROS-induced inflammation increases VCAM-1 express
Synergistic Effects of Guan-Xin-Er-Hao and Hydroxysafflor Yellow A on Atherosclerosis in ApoE-/- Mice: Unveiling Antioxidant and Anti-Inflammatory Mechanisms
Apr 9, 2025 - 17:11
Isolation of components by column chromatography.
Isolation, Characterization and Structural Elucidation of a Bioactive Flavonoid from Schinus polygama Leaves Using Chromatographic and Spectroscopic Techniques
Apr 9, 2025 - 16:49
More
Changes in Plasma glucose concentrations of Diabetic rats treated with different concentrations of CAF and CHF.
Crassocephalum crepidioides (Asteraceae) Benth S. Moore Leaves Fractions Attenuate Dyslipidemia and Atherogenic Indices in Diabetic Rats
GRAPHICAL ABSTRACT
Traditional and Herbal Medicines: Opportunities and Challenges
5EWJ receptor structure.
In silico and Biological Screening of Phytochemicals against NMDA Receptor for Alzheimer’s Disease Therapeutics

About

Pharmacognosy Research (Pharmacogn Res.)

[ISSN: Print -0976-4836, Online - 0974-8490] [http://www.phcogres.com], It provides peer-reviewed original research articles from the field of Natural Products. The journal serves an international audience of scientists and researchers in a variety of research and academia by quickly disseminating research findings related to Medicinal Plants and Natural Products.

It is a peer reviewed journal aiming to publish high quality original research articles, methods, techniques and evaluation reports, critical reviews, short communications, commentaries and editorials of all aspects of medicinal plant research. The journal is aimed at a broad readership, publishing articles on all aspects of pharmacognosy, and related fields. The journal aims to increase understanding of pharmacognosy as well as to direct and foster further research through the dissemination of scientific information by the publication of manuscripts. The submissions of original contributions in all areas of pharmacognosy are welcome.

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(+)-Catechin
(-)-Epicatechin
1
1- diphenyl-2-picrylhydrazyl
1-diphenyl-2-picryl-hydrazil); Ferric Reducing Antioxidant Power
1-diphenyl-2-picrylhydrazyl-radical scavenging assay
10‑di‑epi‑Cubenol
12-didehydroandrographolide
12‑epilycodoline N‑oxide
14-deoxy-11
14-deoxyandrographolide
15-lipoxygenase inhibitory activity
16S ribosomal RNA
16S rRNA
18S Ribosomal ribonucleic acid
1H‑NMR
1‑chloro‑2
1‑Diphenyl‑1‑picrylhydrazyl
1‑diphenyl‑2‑picrylhydrazyl
1‑Diphenyl‑2‑picrylhydrazyl
1‑diphenyl‑2‑trinitrophenylhydrazine scavenger
2
2-Benzenedicarboxylic acid diisooctyl ester
2-diphenyl-1-picrylhydrazyl
2-diphenyl-1-picrylhydrazylDPPH
25‑dien‑3‑ol.
2‑diphenyl‑1‑picrylhydrazyl
2‑diphenyl‑1‑picrylhydrazyl radical
2’ azino bis (ethylbenzthiazolene‑6‑sulfonic acid) radical cation assay
2’‑azino‑bis (3‑ethylbenzothiazoline‑6‑sulfonic acid)
2’‑Diphenyl‑1‑picrylhydrazyl
3
3 (4
3 β-taraxerol.
3(4
3-(4
3-dimethyl
3CLPRO
3T3-L1
3T3‑L1
3T3‑L1 cell lines
3‑(4
3‑(S)‑hexahydroxydiphenoyl‑D‑glucose
3’
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4
4-caffeoylquinic acid
4NQO
4‑dinitrobenzene
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Last updated: 01/06/2021