Recent advances in nanoscience and nanotechnology have revolutionized the medical field, particularly in the treatment and prevention of disease. Silver nanoparticles (AgNPs) are considered one of the best supreme and most important nanomaterials with a variety of compulsive nanomaterial having diverse array of multifunctional bioapplications. The current study focuses on the green biosynthesis of AgNPs using polysaccharides extracted from Olea europaea leaves. The synthesized AgNPs were thoroughly analyzed and characterized using various spectroscopic and microscopic techniques including, UV-Vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, Energy dispersive X-ray (EDX), and Scanning electron microscopy (SEM). The absorption peak at 440 nm showed a high plasmon resonance band, confirming the formation of green AgNPs by the reduction of Ag⁺ ions to Ag⁰. FTIR analysis showed the appearance and extension of different functional groups. The results of EDX and SEM confirmed the synthesis of AgNPs with spherical shape, crystalline structure, and an average size of 64.42 nm. The biosynthesized AgNPs possessed improved antimicrobial activities, indicating the importance of biosynthesized NPs in the pharmaceutical industry. In addition, the biosynthesized AgNPs were biocompatible and exhibited anti-inflammatory activity (86.29%), almost similar to that of a standard drug (87.78%) at a concentration of 500 µL/mL. The polysaccharides obtained from O. europaea could be considered as effective reducing agent, leading to an environmentally friendly synthesis of stable and biologically important AgNPs with a wide range of applications.

Euphorbia dracunculoides Lam. possesses significant biological potential due to its rich bioactive compounds. To enhance this potential, zinc oxide nanoparticles (ZnO NPs) were synthesized using the methanolic extract of E. dracunculoides , exploiting ZnO NPs’ superior physiochemical properties and bioavailability. The synthesis of ZnO NPs was confirmed through UV–Vis spectroscopy (with an absorption maximum at 368 nm), X-ray diffraction (crystalline nature), Fourier transform infrared spectroscopy (functional groups involved in Zn²⁺ reduction), scanning electron microscopy (rod-shaped and triangular morphologies, average size 79 nm), and EDX (presence of Zn and O). The ED-ZnO NPs exhibited dose-dependent cytotoxicity against U87 cells (IC ₅₀ : 229.51 µg·mL ⁻¹ ) and anti-leishmanial activity against Leishmania tropica promastigotes (IC ₅₀ : 9.11 µg·mL ⁻¹ ). Additionally, in vivo studies demonstrated significant antihyperlipidemic effects, with decreased cholesterol, triglyceride, and low-density lipoprotein levels, and increased high-density lipoprotein levels. ED-ZnO NPs also normalized alkaline phosphatase, alanine transaminase, aspartate transaminase, total bilirubin, creatinine, urea, and glucose levels compared to controls. Overall, ED-ZnO NPs effectively enhance the bioactive compounds’ efficacy in treating various disorders.

This study aims to analyze the phytochemical and antimicrobial-related assays including antibacterial, antifungal, antipellicle, and antibiofilm potential of the root of an alpine medicinal plant (Arnebia euchroma (Royle) I.M.Johnst). Ethanolic, methyl acetate, chloroform, and aqueous extracts of root parts of the A. euchroma plant were prepared. The active metabolites of the root part of the plant were evaluated both qualitatively and quantitatively by GC-MS and HPLC techniques, using ethanolic extract. The antimicrobial potential of A. euchroma was investigated using crude extract, fractions, and AgNPs of the A. euchroma root against two Gram-positive bacteria (Enterococcus, Staphylococcus aureus) four Gram-negative bacteria (Salmonella typhi, Pseudomonas aeruginosa, Escherichia coli, Proteus vulgaris) and five fungal strains (Rhizoctonia, Cuneate fasciculus, Aspergillus niger, Fusarium oxysporum, and Candida auris). All the bacterial strains showed sensitivity toward all the fractions (ethanolic crude, chloroform, aqueous, and methyl acetate) and AgNPs. While S. typhi was found the most susceptible, P. vulgaris was most resistant to all extracts and AgNPs. The case of anti-biofilm potential, the S. typhi and Enterococcus were shown to be most susceptible, these bacteria formed biofilm which was disrupted completely by the extracts. Among the fungal strains F. oxysporum and A. niger were the most susceptible and C. fasciculus was the most resistant fungi. All extracts, including ethanolic extract, chloroform, aqueous, and methyl acetate, at concentrations of 12.5 μg/mL and 16 μg/mL and AgNPs showed anti-pellicle activity against S. typhi, Rhizoctonia, and A. niger. Dose-dependent trend in all bioassays was noted. The ethanolic crude and chloroform extracts were the most active followed by methyl acetate and then aqueous extracts. The phytochemical analysis revealed that carbohydrates, alkaloids, saponins, phenols, tannins, proteins, and flavonoids were found in the plant while terpenoids were absent. The present study highlights that root of the A. euchroma is rich in various types of bioactive phytochemicals, which may be responsible for anti-microbial activities toward the tested pathogenic of bacterial and fungal strains. Our results suggest and confirm A. euchroma extracts could be used economically as a valuable bioproduct with new functional properties in the further drug development and pharmaceutical industries.

Caralluma tuberculata N.E.Br. is a naturally occurring plant that has been used for thousands of years for its health benefits. In the present study, the blood sugar lowering effect of C. tuberculata was investigated and compare with that of the diabetes drug metformin. The lyophilized extract of C. tuberculata was administered given to both non-diabetic and diabetic mice. Sixty mice were randomly divided into six groups. Blood glucose levels were measured after 24, 48, 72, and 96 h. The dose was administered orally after being dissolved in maize oil. Analysis of variance (ANOVA) and Tukey’s post hoc test of SPSS were used to determine and compare the hypoglycemic effects of C. tuberculata extract and metformin at different time intervals. In diabetic mice administered C. tuberculata extract at a dosage of 200 mg/kg body weight, there was a significant (p<0.001) decrease in mean blood glucose level and a protective effect on organ weight. When the effects of the drug metformin (150 mg/kg body weight) were compared with those of crude plant extract C. tuberculata, the results indicated that metformin was less effective. C. tuberculate reduced blood glucose levels, and the effect was enhanced when it was combined with maize oil. CTE showed a protective effect against alloxan-induced increases in blood glucose levels and organ weight by increasing insulin production in an in vivo experiment. Therefore, CTE could be a promising pharmaceutical target for the treatment of diabetes.

Plants are vital for life due to their various constituents, comprised of various parts like roots, stems, and leaves. Herbal medicines have been known to man for centuries. The study was designed to check and compare the antibacterial activity of onion (Allium cepa L.), neem (Azadirachta indica A. Juss.), and bitter gourd (Momordica charantia L.) methanolic extracts against four bacterial strains, Bacillus cereus, Bacillus subtilis, Escherichia coli, and Staphylococcus aureus. All bacterial strains were cultured on nutritional agar plates. Three parameters were used in this research: concentrations, pH, and temperature. The five concentrations, 50 mg/mL, 70 mg/mL, 90 mg/mL, 110 mg/mL, and 130mg/mL were applied to all bacterial strains. At 110mg/mL, the methanolic extract of neem and bitter gourd applied to E.coli and S. aureus showed the largest zone of inhibition of 1.8 mm. The minimum inhibitory concentration (MIC) for Bacillus subtilis was 50 mg/mL when onion methanolic extract was applied. Onion and neem extract was found effective at 100 0C against E.coli and B. subtilis, while bitter gourd controls the growth of E.coli at 60 0C. The results of variable pH revealed that onion and bitter gourd were effective at pH 7 against B. subtilis, while neem was effective against S. aureus at pH 2. The results of the present study suggest that all onion, neem, and bitter gourd extracts have compounds containing antibacterial properties that can potentially be useful to control food-borne pathogens. By comparing the extracts of selected plants, neem was found to be more effective than onion and bitter gourd.