@article {1289, title = {In vitro Propagation and Determination of Total Phenolic Compounds, Flavonoid Contents and Antioxidative Activity of Globba globulifera Gagnep}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {November 2020}, pages = {1740-1747}, type = {Research Article}, chapter = {1740}, abstract = {

Introduction: Currently, there is a reduction in the number of Globba globulifera, which is due to its slow multiplication rate, high susceptibility to pathogenic diseases and overexploitation of the plant from natural sources. In vitro culture to study suitable concentrations of plant growth regulators for shoot and root induction of G. globulifera. Bioactive compounds were measured by TPC, TFC and FRSA methods for comparison of those from in vitro and natural conditions. Methods: Microshoots were cultured on solid and liquid MS medium supplemented with various concentrations of cytokinins (BA, Kinetin and TDZ) and auxins (NAA and IBA) for eight weeks. Methanol was used as the extraction solvent via the ultrasonic method, TPC and TFC were both measured. DPPH for free radical scavenging activity was investigated. Results: The best result for shoot formation was achieved when culturing on MS medium with 3 mg/l and 5 mg/l of BAP or 5 mg/l of BAP plus 1 mg/l of IBA. The plantlets were transplanted to pots in a greenhouse. All the planting material showed a 100\% survival rate. The rhizomes of in vitro derived plantlets showed the highest value of TPC (52.28 mg GAE/g crude extract) and FRSA (93.55\%) and lowest of IC50 (0.46 mg/ml). Conclusion: The in vitro culture and antioxidant activity analysis could be the foundation for plant propagation in large quantities and the use of medicine.

}, keywords = {Bioactive compound, DPPH, Micropropagation, TFC, TPC, Zingiberaceae}, doi = {10.5530/pj.2020.12.236}, author = {Wipa Yaowachai and Surapon Saensouk and Piyaporn Saensouk} } @article {482, title = {GC-MS Analysis of Phytochemical Compounds in Syzygium polyanthum Leaves Extracted using Ultrasound-Assisted Method}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {December 2017}, pages = {110-119}, type = {Original Article}, chapter = {110}, abstract = {

Context: Syzygium polyanthum has been traditionally formulated by the folklore for the treatment of diseases including diarrhea, rheumatism, diabetes mellitus, hypercholesterolemia, hypertension, gastritis and hyperuricemia. Normally, its phytochemicals are always extracted using solvent, maceration and steam distillation methods, but the use of ultrasound-assisted extraction (UAE) method is still not well documented. Aims: This study aims to extract the phytochemical compounds present in S. polyanthum leaves using UAE and to identify them by Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Methodology: The leaves were consecutively soaked with n-hexane, ethyl acetate and methanol in a bath sonicator to derive n-hexane (HSP), ethyl acetate (EASP), and methanol (MSP) extracts of S. polyanthum leaves and then the extracts were subjected to GC-MS analysis. Mass-spectral databases of peaks were compared with database from Wiley, NIST and FNSCC libraries for compound identification. Results: GC-MS analyses of HSP, EASP and MSP showed the presence of 21, 27, and 31 peaks, respectively. The major compound for HSP (31.912\%), EASP (27.042\%), and MSP (22.386\%) were unknown compounds which were detected at retention time between 61.980 and 62.29 min, thus requires further characterization. Squalene and phytol were among the other major compounds present in all three extracts. Several identified compounds in the extracts such as squalene, phytol, hentriacontane, palmitic acid, \α-pinene, nerolidol, linalool, \α-tocopherol and \β-tocopherol were known bioactive compounds. Conclusion: GC-MS analyses of n-hexane (HSP), ethyl acetate (EASP), and methanol (MSP) of S. polyanthum leaves extracts have revealed the presence of some known bioactive compounds with therapeutic importance.

}, keywords = {Bioactive compound, GC-MS, Sonication, Syzygium polyanthum, Ultra-sound-assisted}, doi = {10.5530/pj.2018.1.20}, url = {http://fulltxt.org/article/406}, author = {Erlena Nor Asmira Abd Rahim and Azlini Ismail and Muhammad Nor Omar and Umi Nadhirah Rahmat and Wan Amir Nizam Wan Ahmad} } @article {557, title = {Potential Bioactive Compounds Isolated from Boesenbergia rotunda as Antioxidant and Antimicrobial Agents}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {513-518}, type = {Original Article}, chapter = {513}, abstract = {

Objective: This study was conducted to identify some bioactive compounds of Boesenbergia rotunda rhizome and to test as antioxidant and antimicrobial agents. Methods: The milled dried rhizome of B. Rotunda (5kg) was extracted exhaustively with ethanol. The ethanol extract was partitioned three times by n-hexane, chloroform, and ethyl acetate respectively. Each fraction was fractionated by vacuum liquid chromatography (VLC) and then purified by column chromatography gravitation. Structural identification of all pure compounds were elucidated based on spectroscopic methods (UV, IR, and NMR).The antioxidant activity was tested by 2,2-diphenyl- 1-picrylhydrazyl (DPPH). Antimicrobial character was screened for activities againts pathogenic bacteria i.e. Escherichia coli ATCC-11229, Staphylococcus aureus ATCC-25923, Staphylococcus epidermidis FNCC-0048, and Streptococcus mutans by the disk-diffusion method. The assay was done in triplicate, and chloramphenicol was used as the positive control. Results and Discussion: From ethanol extract of B. rotunda three known compounds of flavanones, namely 2\’,4\’-dihydroxy-6-methoxychalcone (compound-1), 5-hydroxy-7- methoxyflavanone (compound-2), and 5,7-dihydroxyflavanone (compound-3) were isolated. The ethanol extract of B. rotunda and the three isolated compounds -1,-2, and -3 showed an antioxidant activity with the IC value of 92.64; 46.66; 62.84, and 62.66 \μg/mL, respectively. The zone of inhibition of extract and the three isolated compounds showed moderate activity against Escherichia coli ATCC-11229, Staphylococcus aureus ATCC-25923, Staphylococcus epidermidis FNCC-0048, and Streptococcus mutans.The maximum zone of inhibition was 13.20\±0.76 mm at the maximum concentration used (500 \μg/mL) against Escherichia coli ATCC-11229, and the minimum inhibitory concentration(MIC) for each bacteria was found to be 0.5\μg/mL. Conclusion: The result of the study suggests that B. rotunda rhizome contains potential bioactive compounds which could be suitable for antioxidant and the treatment of various infections caused by Escherichia coli ATCC-11229, Staphylococcus aureus ATCC- 25923, Staphylococcus epidermidis FNCC-0048, and Streptococcus mutans.

}, keywords = {Antimicrobial, Antioxidant, Bioactive compound, Boesenbergia rotunda}, doi = {10.5530/pj.2018.3.84}, url = {http://fulltxt.org/article/517}, author = {Sri Atun and Sri Handayani and Anna Rakhmawati} }