@article {1367, title = {Antioxidant, Anti-quorum Sensing and Cytotoxic Properties of the Endophytic Pseudomonas aeruginosa CP043328.1 {\textquoteright}s Extract}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {March 2021}, pages = {332-340}, type = {Original Article}, chapter = {332}, abstract = {

Background: Novel bioactive compounds are in high demand to combat challenges of microbial resistance. In recent years, secondary metabolites from endophytic bacteria have drawn attention from researchers due to their novel structures and significant biological activities. Objective: This study aimed at extracting secondary metabolites from endophytic Pseudomonas aeruginosa CP043328.1 from Anredera cordifolia leaves for their biological activities. Methods: The anti-SMASH was used to predict the biosynthetic gene clusters of P. aeruginosa CP043328.1. The bacteria was resuscitated on Nutrient agar. Ethyl acetate was used to extract the secondary metabolites. Chemical composition of the secondary metabolites was evaluated using gas chromatography-mass spectrometry (GC-MS) and 2, 2-diphenyl-1-picrylhydrazyl (DPPH), and 2, 2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) methods were used to analyze the scavenging activity. Anti-quorum sensing activity was investigated using Chromobacterium violacuem ATCC 12472 as the biological indicator. Cytotoxicity assay was performed using a tetrozolium-based columetric (MTT) assay. Results: The bacterium has 12 gene clusters that encode for secondary metabolites. The extract revealed 15 volatile constituents with diisooctyl phthalate (50.51\%) and [1, 2, 4] oxadiazole, 5-benzyl-3 (10.44\%) being the major compounds. The extract revealed scavenging capabilities with IC50 of 0.625 mg/ml for DPPH and 0.15 mg/ml for ABTS. It displayed anti-quorum sensing activity with 88\% violacein inhibition at 3.31 mg/ml. According to MTT assay, the extract was found to be safe for use up to 2000 μg/mL. Conclusion: P. aeruginosa CP043328.1 shows a potential use as a source of pharmacologically important metabolites.

}, keywords = {Anti-quorum sensing activity, antioxidant activity, Chemical composition, Cytotoxicity assay, Pseudomonas aeruginosa CP043328.1}, doi = {10.5530/pj.2021.13.43}, author = {L S Ngidi and C I Nxumalo and J S Shandu and T S Maliehe and K Rene} } @article {1232, title = {Chemical Composition and Antimicrobial Properties of Elettaria cardamomum Extract}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {August 2020}, pages = {1058-1063}, type = {Original Article}, chapter = {1058}, abstract = {

Introduction: Cardamom, also known as Elettaria cardamomum, a venerated perennial herb like the "Queen of Spices" belongs to the Zingiberaceae family. She holds various pharmacological activities due to its phytochemicals it contains such as; phenols, tannins, terpenoids, flavonoids, sterols. Methods: The study included the determination of the chemical composition of Elettaria cardamomum ethanolic extract (EEC) by HPLC/UV and evaluated their antimicrobial potential against ten pathogenic reference strains using two complementary techniques: the method of diffusion from solid discs and the determination of minimum inhibitory concentrations (MIC). Results: The results obtained from chemical identification of the EEC showed the presence of polyphenolic acids (rosmarinic acid, caffeic acid, ferulic acid, etc.) and many flavonoids (kaempferol, chrysin, galangin, pinocembrine, quercetin, etc.). The results of the antimicrobial effect showed that the extract reacted positively on almost all the microbial strains tested. The EEC extract significantly inhibited the growth of microbial strains, with a broader antimicrobial spectrum with extensive action with inhibitory zones between 8 and 33 mm in diameter. Thus, this extract revealed a dose-dependent antimicrobial activity on these microbial strains used. However, the inhibitory potential of the cardamom extract was variable compared to their MIC ranging from 6.25 to 12.5 mg of dry extract/mL. Therefore, the strains least susceptible to EEC are Bacillus subtilis, Escherichia coli, Aspergillus niger and Candida albicans. Conclusion: This activity is due to the phenolic compounds produced by the EEC extract. This extract can be used for the development of plant medicines against microbial infections and fungal infestations.

}, keywords = {Antimicrobial activity, Chemical composition, Elettaria cardamomum, Pathogenic strains}, doi = {10.5530/pj.2020.12.149}, author = {Faiza MOULAI-HACENE and Mokhtaria Yasmina BOUFADI and Soumia KEDDARI and Abdelkader HOMRANI} } @article {679, title = {Comparison between Volatile Oil from Fresh and Dried Fruits of Zanthoxylum rhetsa (Roxb.) DC. and Cytotoxicity Activity Evaluation}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {827-832}, type = {Original Article}, chapter = {827}, abstract = {

Introduction: Zanthoxylum rhetsa is a tree found in northern Thailand. It has been used as a traditional herb with medicinal properties. However, the comparison of composition in volatile oil from fresh and dried fruit is still not fully investigated. In study, we evaluated the constituents in oil from fruits of Z. rhetsa and evaluated the cytotoxicity in non-small lung cancer cells. Methods: The hydro distillation was applied to afford the oil. The obtained oil was analyzed by GC-MS and evaluated the cytotoxicity and apoptosis in non-small lung cells by using MTT method and flow cytometry respectively. Results: Fresh and dried fruits provided a higher yield of volatile oil by approximately 10\% and 20\% respectively, compared to other studies. Twenty-eight compounds were identified and the major components of fresh and dried fruits were not distinctly different. The major component, \α-limonene, was found in dried fruits from Phayao, southern Nan and Chiang Rai province. A high content of \β-phellandrene was found in dried fruits from northern Nan province and the (+)-sabinene was found in high content of fresh fruits from southern Nan, Phayao and Chaing Rai province. Furthermore, the cytotoxicity tests displayed that all of oil products were active against lung cancer cells. Among the components investigated, fresh and dried fruits from southern Nan province showed to be the most potent (EC50 = 1.91 \± 0.53, 1.79 \± 0.43 \μL/mL, respectively). Conclusion: Volatile oil of Z. rhetsa exhibited a strong cytotoxic properties against cytotoxic may be potentially used as natural anticancer agents.

}, keywords = {Chemical composition, Cytotoxic activity, Local variation, Volatile oil, Zanthoxylum rhetsa}, doi = {10.5530/pj.2018.5.141}, author = {Sewan Theeramunkong and Maleeruk Utsintong} } @article {558, title = {In vitro Study of Antibacterial Activity of Hydro-Alcohol Morrocan Plants Extracts}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {519-526}, type = {Original Article}, chapter = {519}, abstract = {

Context: Several aromatic and medicinal Morrocan plants have been used traditionally in pharmaceutical products and traditional medicine for the treatment of several pathologies. Objective: Evaluation of the protective power of nine Moroccan plants ethanol extracts against some strains of bacteria. Method: The antibacterial activities of ethanolic extracts (EE) were evaluated using agar-well diffusion method, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and IC50 against nine foodborne bacteria [Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus (PN15 and 25923), Escherichia coli (TF2 and ATCC 25929), Pseudomonas aeruginosa (P116 and 195) and Salmonella enterica]. Screening of chemical constituents was carried out as well. Results: We noted the presence of leuco-anthocyanins, anthocyanins, essential oils, alkaloids, and aldehydes in the extracts. The strains of S. enterica followed by S. aureus and P. aeruginosa were the most resistants to the extracts effect. The principal component analysis (APC) demonstrated that the highest antibacterial activity was that of L. nobilis and O. europaea ethanol extract (EE), which was directly bactericidal on all the strains tested with the exception of P. aeruginosa. While, R. tinctorum, S. indicum and L. sativum were characterized by the lowest activity. Statistical analysis: Analysis of variance was performed by uni-varied ANOVA in the software SPSS 22 Fr. Conclusion: The active compounds were soluble in ethanol. The antimicrobial activities of L. nobilis and O. europaea may contribute to understand their involvement in pharmaceutical products and traditional medicine against many microbial infections.

}, keywords = {Antibacterial activity, Chemical composition, Hydro-Alcohol Extract}, doi = {10.5530/pj.2018.3.85}, url = {http://fulltxt.org/article/518}, author = {Ramdan Btissam and E I Malki Fatima and NHIRI Mohamed} } @article {151, title = {Chemical Composition and Antimicrobial Activity of Fresh Rhizome Essential Oil of Zingiber Officinale Roscoe}, journal = {Pharmacognosy Journal,}, volume = {8}, year = {2016}, month = {February 2016}, pages = {185-190}, type = {Original Article}, chapter = {185}, abstract = {

Background: Zingiber officinale Roscoe (Zingiberaceae) is a rhizomatous perennial herb found in tropical Asia. It is extensively used worldwide as a spice, flavoring agent and herbal remedy for cold, throat and chest\ infections and cough. The present study was carried out to analyse an essential oil from the fresh rhizomes of Z. officinale of Ghaziabad region and to evaluate its antimicrobial activity. Materials and Methods: The fresh rhizomes were hydrodistilled to get the essential oil which was analysed by GC and GC-MS techniques. The oil was evaluated for antimicrobial activity by disc diffusion method. Results and Discussion: The essential oil was characterized by high percentage of sesquiterpenes (66.66\%), monoterpenes (17.28\%) and aliphatic compounds (13.58\%). The predominant sesquiterpene was zingiberene (46.71\%) followed by valencene (7.61\%), \β-funebrene (3.09\%) and selina-4(14),7(11)-diene (1.03\%). The major monoterpenes were characterized as citronellyl n-butyrate (19.34\%), \β-phellandrene (3.70\%), camphene (2.59\%) and \α-pinene (1.09\%). The essential oil exhibited significant antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger. Conclusion: The essential oil mainly contained a large number of sesquiterpenes and monoterpenes and exhibited significant antimicrobial activity against pathogenic microorganisms.

}, keywords = {Antimicrobial activity, Chemical composition, Essential oil, GC-MS analysis, Zingiber officinale.}, doi = {10.5530/pj.2016.3.3}, author = {Pradeep Kumar Sharma and Vijender Singh and Mohammed Ali} }