@article {1155, title = {Documentation of Mosquito Repellant Plants from Fringe Villages of Manas National Park, Assam, India}, journal = {Pharmacognosy Research}, volume = {15}, year = {2023}, month = {June 2023}, pages = {497-503}, type = {Original Article }, chapter = {497}, abstract = {

Background: Mosquito-borne diseases are among the common problems in developing countries. For centuries, herbal formulations have been used by tribal communities as medicines. A survey was carried out to document the insecticidal plants from fringe villages of Manas National Park. Materials and Methods: The survey was carried out from April to July 2020. The survey was conducted in a face-to-face manner with a ready-made questionnaire. Results: A total of 25 fringe villages were surveyed, and 57 informants were interviewed. Most of the informants were male (87\%) and aged (\>50 years old). A total of 24 plant species belonging to 18 families were recorded in the present study. Among the plant families, Solanaceae and Lamiaceae were the most famous families. Brassica rapa was the most popular plant with five citations, followed by Cinnamomum tamala and Nicotiana tabacum. Leaves were the most commonly used plant parts, followed by stems. The survey also reported that smokes, produced by burning plant parts, are the most commonly practised mode of use, followed by the rubbing of raw juices of plant parts to repel mosquitoes by fringe villagers of Manas National Park. Conclusion: With a solid ethnobotanical knowledge system supported by scientific evidence, the present study may be used by researchers to explore further the insecticidal and mosquitocidal activities of the plants.

}, keywords = {Fringe village, Larvicidal, Manas National Park, Medicinal plants, Mosquitocidal.}, doi = {10.5530/pres.15.3.052}, author = {Himangshu Baruah and Harmonjit Boro and Ananta Swargiary} } @article {1139, title = {Phytochemical, Antioxidant and Trace Element Analysis of Hypericum japonicum Thunb.}, journal = {Pharmacognosy Research}, volume = {15}, year = {2023}, month = {February 2023}, pages = {338-346}, type = {Original Article }, chapter = {338}, abstract = {

Background: Plants possess various bioactive compounds with many biological activities. Antioxidant plays vital roles in initiating deleterious free scavenging radical reactions. Objectives: The present study was done to determine the presence of phytochemical properties of the plant along with its antioxidant analysis of four solvent fractions (hexane, diethyl ether, ethyl acetate and methanol) from Hypericum japonicum. Furthermore, five heavy metals- Zn, Cu, Cd, Pb and Cr were analyzed. Materials and Methods: All the experiments for phytochemical and antioxidants of different solvent extracts were investigated following standard protocols. The heavy metal content was analyzed using spectroscopy method. Results: Qualitative analysis revealed that almost all the phytochemicals were present on one or other solvents. The carbohydrate and protein content was highest in hexane and ethyl acetate extract. Ethyl acetate showed highest phenol content while diethyl ether showed highest in flavonoid content. Similarly, ethyl acetate extract showed strongest antioxidant activity. Heavy metals were found in very negligible amounts. Conclusion: The present study suggests that H. japonicum might have the potential to be a good source of phytochemicals and antioxidants. Further studies are required to analyze the pharmacological properties of the plant.

}, keywords = {Antioxidant, Heavy metal, Hypericum japonicum, Medicinal plants, Phytochemical.}, doi = {10.5530/pres.15.2.036}, author = {Mritunjoy Kumar Roy and Ananta Swargiary} }