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Pharmacognosy Research
An Open Access Journal in Pharmacognosy and Natural Products

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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
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

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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
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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
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Structure of diosgenin
Development and Validation of an HPLC Method for Diosgenin, A Bioactive Compound in the Rhizomes of Chamaecostus cuspidatus
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Green Synthesis and in vitro Insights of Zinc Oxide Nanoparticles Using Nutmeg and Flaxseed Extracts

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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.

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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
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3T3‑L1 cell lines
3‑(4
3‑(S)‑hexahydroxydiphenoyl‑D‑glucose
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