@article {1379, title = {Bioactive Secondary Metabolite from Endophytic Aspergillus Tubenginses ASH4 Isolated from Hyoscyamus muticus: Antimicrobial, Antibiofilm, Antioxidant and Anticancer Activity}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {March 2021}, pages = {434-442}, type = {Original Article}, chapter = {434}, abstract = {

Background: Endophytes are the richest sources of natural compounds, showing biological varieties and pharmacological activities. Objective: This study aims to isolate bioactive secondary metabolites from endophytic Aspergillus tubenginses with study the biological activity of the isolated bioactive compounds. Materials and Methods: Anofinic acid were obtained from Aspergillus tubenginses crude extract using chromatographic techniques and characterized by spectral analysis. Results: Nine endophytic fungi were isolated from Hyoscyamus muticus plant. The most efficient isolate was AF3 identified as Aspergillus tubenginses ASH4 by 18S rRNA gene sequencing. Anofinic acid is an isolated active metabolite biosynthesized by A. tubenginsis was extracted from ethyl acetate with UPAC name of 2,2-dimethyl-2H-1-benzopyran-6-carboxylic acid. It shows a strong antimicrobial activity against human pathogenic bacteria such as Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli, Candida albicans and Bacillus subtilis. Moreover, anofinic acid inhibits biofilm formation and has antioxidant activity, with strong activity against some carcinoma cells such as HCT-116, Hep-G2 and MCF-7. Conclusion: Anofinic acid was purified from the endophytic Aspergillus tubenginses crude extract and showed antimicrobial, antibiofilm, antioxidant, anticancer activities.

}, keywords = {Aspergillus tubenginses, Bioactive secondary metabolite, Endophytes, Hyoscyamus muticus}, doi = {10.5530/pj.2021.13.55}, author = {Heba I Elkhouly and Ahmed A Hamed and Asmaa M El Hosainy and Mosad A Ghareeb and Nagwa M Sidkey} } @article {1155, title = {Investigation of Secondary Metabolites and its Bioactivity from Sarocladium kiliense SDA20 Using Shrimp Shell Wastes}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {May 2020}, pages = {636-644 }, type = {Research Article}, chapter = {636}, abstract = {

Introduction: In this study we isolated bioactive compounds using different chromatographic techniques from culture filtrate of Sarocladium kiliense SDA20 grown in fermentation media containing shrimp shell waste as substrate under optimum conditions. Antibacterial and antibiofilm activities of crude extract and purified compounds were evaluated. Methods: The test fungi strain Sarocladium kiliense SDA20 was isolated from Egyptian soil and identified by18 S ribosomal RNA. Optimization conditions were carried out in fermentation media containing shrimp shell waste as sole carbon source, inoculated by 106 spores/ml of Sarocladium kiliense SDA20 at pH 7.0 produce 84.5\% of the total toxins. Different chromatographic techniques for ethyl acetate extract of culture filtrate of fungi were used resulting in isolation of pure compounds were elucidated spectroscopically and comparing their data in literature. GC/MS analysis of extract was used for identification of other chemical compounds. Antibacterial and biofilm activity was evaluated using MTT assay. Results: Five compounds for the first time were identified: Cholest-5-en-3-ol (C1), Palmitic acid (C2), Oleic acid (C3), Nicotinamide (C4), Tricin (C5). GC-MS analysis showed the presence of twenty-seven compounds. Antibacterial activity of crude and pure compounds displayed a strong inhibitory activity against Bacillus subtilis. C1, C4, C5 showed moderate activity against Escherichia coli, followed by C2, C3. Meanwhile,\ Staphylococcus aureus was less susceptible to pure compounds with low activity of C3, C5. The crude extract and pure compounds displayed biofilm inhibition activity against four pathogenic bacterial strains. Conclusion: Shrimp shell wastes are one of the economic bioproducts used for the production of bioactive secondary metabolites from fungi.

}, keywords = {Antibacterial activity, Antibiofilm activity, GC/MS analysis, Sarocladium kiliense SDA20, Secondary metabolities, Shrimp waste shell}, doi = {10.5530/pj.2020.12.95 }, author = {Dina M Eskander and Sherien MM Atalla and Ahmed A Hamed and Ezzel -Din A El-Khrisy} }