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Pharmacognosy Research
An Open Access Journal in Pharmacognosy and Natural Products

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Comparison of weekly-fed blood glucose
Effect of Annona squamosa extract (RM606) on lipid accumulation
 Effect of UNIM-301 treatment on carrageenan-induced paw edema in rats. Difference between initial paw volume and paw volume at observation points post-carrageenan administration was considered to be an increase in paw volume (depictive of paw edema). Each bar represents the mean ± SE of 6 animals. Statistical analysis by one-way ANOVA followed by Dunnett’s multiple comparison (*P < 0.05, **P < 0.01)
Effect of Capsaicin on Pharmacodynamic and pharmacokinetics of Gliclazide in Animal models with Diabetes
Isolation, structural characterization and in silico drug‑like properties prediction of a natural compound from the ethanolic extract of Cayratia trifolia (L.)
8.0% polyacrylamide gel electrophoresis polymerase chain reaction products amplified with the Equids-specific primer
High‑performance liquid chromatography chromatogram for resveratrol of the products used in this study
Serum Total Aantioxidant Capacity in Oral Carcinoma Patients
(a) E. cinerea (Boiss.) Hedge and Lamond (picture of author), (b) E. platyloba DC (picture of author), (c) E. orientalis Hedge and Lamond (35), (d) E. sibthorpiana Guss (36)
Lesions in the stomach of rats
Free radical scavenging activity of aqueous and methanol extract of leaf galls of F. glomerata. ascorbic acid is included as positive control. Activity was measure by the scavenging of DPPH radicals and expressed as percent inhibition. Each value is expressed as the mean ± standard deviation
Optimized HPLC chromatogram of costunolide (a) Blank (b) Standard (c) Sample
 Structure of isolated compound
GC‑MS analysis of bioactive compounds in the methanol extract of Clerodendrum viscosum leaves
Nitric oxide radical scavenging activity
In vitro antioxidant and free radical scavenging activity of four Alkanna species growing in Iran
Psidium guajava (PG) ameliorates preferential intake of fructose over pellet food in rodents. Over 8 week study period, (a) average weekly food intake was significantly reduced in fructose drinking rats (FDR) group as compared to control, (b) average weekly fructose intake was significantly reduced in PG2 group as compared to FDR, (c) total calorie consumption in the various groups was not significantly different, but the fraction of calories preferentially derived from fructose was highest in FDR and lowes
X‑ray crystal structure of human carbonic anhydrase‑II in co‑complex with furosemide (PDB ID: 1Z9Y)
Anti‑diabetic effects of ethanol extract of Bryonia laciniosa seeds and its saponins rich fraction in neonatally streptozotocin‑induced diabetic rats
Effect of study groups on mean paw thickness against various phlogistic agents; results are presented as mean (standard deviation)
Rubraxanthone
DPPH radical scavenging activity of the extracts and Vitamin C. All values are expressed as mean of triplicate ± standard division
Mechanism of DNA damage induced by NO and its prevention by plant extract. Nitrous anhydride (N2 O3 ), an auto oxidation product of NO, causes nitrosation of primary amines in the DNA bases. While, peroxynitrite (ONOO- ), formed from the reaction of NO with superoxide, attacks sugar-phosphate backbone causing single strand breaks. The plant extract competes with the oxygen to react with NO, inhibiting the formation of nitrous anhydride and peroxynitrite
The effect of hydroalcoholic extract of leaves of O. tenuiflorum on body weight in streptozotocin-and nicotimanide induced diabetic rats (O. tenuiflorum: Hydroalcoholic extract of leaves of O. tenuiflorum. All the values are mean ± standard error of the mean [N = 5]. *P < 0.05, **P < 0.05, **P < 0.05 when compared with control; one-way analysis of variance, followed by Bonferroni post-hoc test) O. tenuiflorum = Ocimum tenuiflorum
Evaluation of Bacillus cereus and Bacillus pumilus metabolites for anthelmintic activity
Typical tracing showing the inhibitory effects of crude aqueous extract of Muntingia calabura L. on spontaneous contractions of isolated rabbit jejunum preparation
Chemical composition and antimicrobial activity of essential oils of Juniperus excelsa Bieb. (Cupressaceae) grown in R. Macedonia
Phytocomponents in the root exudate of control plant
Mean number of intracellular amastigotes in negative controls, increasing concentrations of osthole, and positive control in 12, 24, 48, and 72 h. Number of amastigotes is significantly decreased at concentrations ≥20 μg/ml (P < 0.05)
Separation of Ethyl acetate fraction from methanolic extract of leaves of A. cepa
Evaluation of antitumor activity and antioxidant status of Alternanthera brasiliana against Ehrlich ascites carcinoma in Swiss albino mice
Histological study of liver tissue in control and experimental groups of rats
The transverse section illustration of the dried leaflet of the two species of Abrus (1: Upper epidermis, 2: Fibers, 3: Palisade tissue, 4: Spongy tissue, 5: Xylem, 6: Phloem, 7: Lower epidermis, 8: Nonglandular hair, 9: Prisms of calcium oxalate)
Ultraviolet mode at 254 nm Que‑standard Quercetin, E.A. extract‑ethyl acetate extract, kaemp‑standard kaempferol
Schematic diagram of SFE system: (1) CO2 tank; (2) molecular sieve filter; (3) ss 2 µm pore size filter; (4) carbon dioxide transfer pump; (5, 8, 13) two-way needle valves; (6) Ethanol v; (7) high-pressure piston pump; (9) three ways valve; (10) preheating coil; (11) extraction cell; (12) thermostated oven; (14) back-pressure regulator; (15) sample collection vessel
Zone of inhibition against Propionibacterium acne
Lipoxygenase inhibitory activities of different extracts of leaf gall of Terminalia chebula. The plant extract sample (200–800 μg/mL) was preincubated with soybean lipoxidase enzyme (20,000 U/mL) for 5 min at 25°C. Linoleic acid solution (0.6 mM) was added, mixed well, and absorbance was measured at 234 nm. Indomethacin (60 μg/mL) was used as reference standard. Activity was measured and expressed as % inhibition. Each value is expressed as the mean ± standard deviation
Reducing power of EESTG and the positive controls [BHT and ascorbic acid]. All values are reported as means ± SD (n = 3)
The dissolution rate of Coptidis rhizoma herb ultrafine particle in comparison with that of traditional decoction. (a) The standard solution (berberine) was assayed by HPLC; (b) The berberine of CR extract was detected by HPLC; (c) The dissolution time curve of berberine determined by HPLC
The effect of Garcinia dulcis fruit rind extract and known antioxidant (ascorbic acid) in 2,2‑diphenyl‑1‑picrylhydrazine model. Values are mean ± standard error of three replicates
Cycloolivil, a lignan from the roots of Stereospermum suaveolens
In vitro antioxidant activity of Leucas aspera leaf extracts
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

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Chromatogram of GCMS of Eranda moola Niruha basti
GC-MS Analysis of an Ayurveda Formulation Erandamula Niruha Basti (Medicated Therapeutic Enema)
Jun 27, 2025 - 10:54
Morphological and anatomical features of Cajanus scarabaeoides leaf. (a) Habit of the Cajanus scarabaeoides showing pinnately compound leaves. (b) Transverse section of the leaf showing internal anatomy including epidermis, mesophyll, vascular bundles, and glandular trichomes. (c) Vein islet and veinlet termination pattern observed in a cleared leaf preparation. (d) Surface view of the lower epidermis showing paracytic stomata. (e) Microscopic view showing a unicellular trichome emerging from the epidermal
Pharmacognostical and Phytochemical Screening of Leaves of Cajanus Scarabaeoides (L.) Thouars
Jun 24, 2025 - 23:13
The in vitro Antioxidant Activity of OREE and ORNHEX. Data are mean±SEM (Each experiment has triplicate values). EE-Ethanolic extract; nHEX-n Hexane extract; AA-Ascorbic acid; GA-Gallic acid
Phytochemical Extraction, Screening, GCMS Analysis and Antioxidant Properties of Ophiorrhiza recurvipetala
Jun 24, 2025 - 23:10
Structure of diosgenin
Development and Validation of an HPLC Method for Diosgenin, A Bioactive Compound in the Rhizomes of Chamaecostus cuspidatus
Jun 24, 2025 - 23:05
More
Chromatogram of GCMS of Eranda moola Niruha basti
GC-MS Analysis of an Ayurveda Formulation Erandamula Niruha Basti (Medicated Therapeutic Enema)
A Review on the Utilization of Epicuticular Wax from Plant Samples as a Hydrophobic Surface Coating Agent
A Review on the Utilization of Epicuticular Wax from Plant Samples as a Hydrophobic Surface Coating Agent
Graphical representation of total phenolic content of different extracts.
Phytochemical Insights into Antioxidant and Antimicrobial Potentials Across Five Indian Medicinal Plants

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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’
3’‑hydroxy‑5
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