@article {1833, title = {TLC Profiling and Phytochemical Screening of Various Extracts of Ochna integerrima (Lour.) Merr. from Kog Dong Keng Forest, Thailand}, journal = {Pharmacognosy Journal}, volume = {14}, year = {2022}, month = {August 2022}, pages = {273-277}, type = {Original Article }, chapter = {273}, abstract = {

Introduction: Ochna integerrima (Lour.) Merr. belongs to family Ochnaceae, and it is a traditionally important herb in Southeast Asia. The objective of this study was to investigate the phytochemical compounds of various extracts from six samples. Methods: Thin Layer Chromatography (TLC) of the hexane, dichloromethane and 70\% ethanol extracts were performed for five important phytochemicals namely, alkaloids, flavonoids, terpene, cardiac glycosides and anthraquinone. Results: Terpene was found in all the samples that were extracted from all extracts, while cardiac glycosides and anthraquinone did not occur in all samples that were extracted from all extracts. Flavonoids were observed in all samples that were only extracted with dichloromethane, whereas it was found in some samples from the other extracts. The hexane extract compound was found in alkaloids in Garcinia cowa and Cryptolepis dubia, while the dichloromethane extract compound was discovered in Suregada multiflora, Capparis micracantha and Salacia chinensis. All samples extracted with 70\% methanol did not contain any alkaloid compounds. Terpene was found in the hexane extracted compounds. Conclusions: These findings suggested that Ochna integerrima (Lour.) Merr. is a potent source of medicinal phytochemical compounds that could lead to its use as medicinal products.

}, keywords = {Flavonoids, Ochna integerrima (Lour.) Merr., Phytochemical compounds, TLC}, doi = {10.5530/pj.2022.14.96}, author = {Sombat Appamaraka and Chadaporn Senakun and Surapon Saensouk} } @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 {983, title = {The Diversity of Biologically Active Compounds in the Rhizomes of Recently Discovered Zingiberaceae Plants Native to North Eastern Thailand}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {1014-1022}, type = {Original Article}, chapter = {1014}, abstract = {

Objective: To identify and quantify the bioactive compounds, along with biological activities, of native Thai edible Zingiberaceae. Methods: The bioactive compounds evaluated were phenolic acids, flavonoid, vitamin C, curcumin, 6-gingerol, eugenol and essential amino acids; analyses involved HPLC and LCMS/MS. Antioxidant activities were assessed by DPPH and FRAP assays. Results: Zingiber officinale was the richest source of bioactive compounds, followed by Z. officinale, Alpinia zerumbet and Alpinia conchigera. Total phenolic content and total flavonoid contents ranged widely across these species (17 to 200 mg GAE/100 g DW and 17 to 66 mg RE/100 g DW). All the species studied possessed strong antiglycation properties, ranging from 82 to 98\%, with strong positive correlations of total phenolic content and antioxidant activity. The contents of curcumin, 6-gingerol, eugenol and vitamin C were in the range of 1 to 26, 1 to 140 μg/ g DW, 5 to 1600 and 4 to 21 mg/100 g DW, respectively. Seven essential amino acids identified by using LCMS/MS were found in most samples studied ranging from 2 to 6752 μg/100 g DW. Conclusion: Z. officinale is an abundant source of bioactive compounds and antioxidant activity in all these samples. These plants are fresh sources for developing novel functional ingredients in either food or cosmetics.

}, keywords = {Antiglycation, Antioxidants, Bioactive compounds, Essential amino acids, Ginger family}, doi = {10.5530/pj.2019.11.160}, author = {Theeraphan Chumroenphat and Issaraporn Somboonwatthanakul and Surapon Saensouk and Sirithon Siriamornpun} }