@article {1979, title = {Phytochemical Comparative Studies, Antioxidant and Antimicrobial of Artemisia and Star Anise}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {March 2023}, pages = {183-188}, type = {Research Article}, chapter = {183}, abstract = {

The tradition of investigating plants and extensively scrutinizing their biologically or pharmacologically active compounds has markedly increased due to their fewer adverse effects compared to synthetic drugs. Through this study, we aim to establish a phytochemical screening and analyze and compare the antioxidant and antimicrobial properties of Artemisia and star anise. The antioxidant characteristics of plant extracts we assessed, the chemical bonds and components composition were analyzed in the sample and further experiments were done to assess the antimicrobial activities. On the results, we found that all the extracts of both the species were very impactful in the inhibition of E. coli, C. Albicans, and S. aureus. However, S. aureus was more sensitive to star anise and E. coli and C. albicans were inhibited better through the alcoholic extracts of Artemisia vulgaris. Star anise has a higher and more effective antioxidant activity against DPPH with a calculated value of 78.3 \% at a concentration of 750 ppm, at a concentration of 500 ppm it was 65.3\% and in the least concentration of 250 ppm, it was 23.3\% compared to Artemisia vulgaris. Additionally, both extracts possessed marked antifungal action.

}, keywords = {Anise, Antibacterial., Antioxidant, Artemisia, Phytochemical}, doi = {10.5530/pj.2023.15.27}, author = {Khadeeja Y. Abid and Faris T. Abachi} } @article {2117, title = {Phytochemical Profile, Antioxidant and Antibacterial Activity of the Essential Oil of Luma Chequen (Molina) A. Gray from Peru}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {October 2023}, pages = {777-780}, type = {Original Article}, chapter = {777}, abstract = {

Background: Luma chequen belongs to Myrtaceae family and it is known as {\textquotedblleft}arrayan{\textquotedblright}. In the traditional medicine from Peru, L chequen is used as aromatic plant, anti-inflammatory and hypocholesterolemic. Objective: To determine the phytochemical profile, evaluate the antioxidant and the antibacterial activity of L. chequen essential oil. Material and Methods: In the analysis of the volatile components a Gas Chromatography coupled to Mass Spectrometry (GC-MS) was used to identify the content of terpenes and sesquiterpenes. 2,2-diphenyl-1-picrylhydrazyl (DPPH) was the method used to determine the antioxidant activity and obtain the half inhibitory concentration (IC50). For the antibacterial activity, a colorimetric macrodilution method was carried out to evaluate the effect of the essential oil of L. chequen against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922. Results: The analysis by GC-MS showed two major components alpha-pinene (62.89\%) followed by 1,8-cineole (11.94\%), and propanoic acid, 2-methyl-, 2-methylpropyl ester with 8.67\%. In the antioxidant activity against DPPH radical, the essential oil of L. chequen showed an IC50 equivalent to124.60 {\textpm} 2.0 μg/mL. In the antibacterial activity, L. chequen had an MIC (minimum inhibitory concentration) for Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922 of 4.35 {\textpm} 0 μg/mL and 8.71 {\textpm} 0 μg/mL respectively. Conclusion: L. chequen presented monoterpene compounds as main phytoconstituents as well as antioxidant and antibacterial activity in vitro. The essential oil might be used as antimicrobial agent in the future overall against S. aureus.

}, keywords = {Antibacterial., Antioxidant, Aromatic plant, Essential oil, Luma chequeen, Medicinal plant}, doi = {10.5530/pj.2023.15.151}, author = {Julio Luis D{\'\i}az-Uribe and Mar{\'\i}a Elena Salazar-Salvatierra and Julio Reynaldo Ruiz-Quiroz and Oscar Herrera- Calderon and Eddie Loyola-Gonzales and Freddy Emilio Tataje-Napuri and Jos{\'e} Francisco Kong-Chirinos} }