@article {2592, title = {Pharmacognostic Characterization and Comparative TLC Fingerprinting of Siphonodon celastrineus Griff. and Suregada multiflora (A. Juss) Baill. Heartwoods: Toward Ethnomedicinal Validation and Herbal Standardization}, journal = {Pharmacognosy Journal}, volume = {18}, year = {2026}, month = {April 2026}, pages = {63-73}, type = {Original Article}, chapter = {63}, abstract = {

This study aimed to establish standards and perform a pharmacognostic analysis to compare of Siphonodon celastrineus Griff. (Ma Duuk) and Suregada multiflora (A. Juss.) Baill. (Khuan Thong Phayabaht) heartwood. Botanical characteristics, physicochemical properties, and TLC fingerprints were evaluated. Both species exhibited unique macroscopic and microscopic characteristics, with variations in bark texture and heartwood color. TLC fingerprints provide distinctive chromatographic profiles, enabling authentication. This study also established a limitation for the ethanolic-soluble extractive of both herbs at not less than 3\% (w/w). The limitations of water-soluble extractive content of S. celastrineus Griff. and S. multiflora (A. Juss) Baill. were determined to be not less than 5\% and 3\% (w/w), respectively. The findings support the establishment of quality control criteria for the heartwood of S. celastrineus Griff. and S. multiflora (A. Juss) Baill., contributing to their potential inclusion in the Thai Herbal Pharmacopoeia and validating their ethnomedical use.

}, keywords = {Ethnomedicinal Validation, Pharmacognostic evaluation, Physicochemical parameter, Siphonodon celastrineus Griff, Suregada multiflora (A. Juss.) Baill.}, doi = {10.5530/pj.2026.18.118}, author = {Wanida Caichompoo and Kanin Laothamyingyong and Napassorn Kaewsuwan and Pawitra Pulbutr and Nuttapong Wichai and Waraporn Saentaweesuk and Taweesak Dhammaraj} } @article {1260, title = {Prebiotic Activity of Polysaccharides Extracted from Jerusalem Artichoke Tuber and Development of Prebiotic Granules}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {Research Article}, pages = {1402-1411}, type = {Research Article}, chapter = {1402}, abstract = {

Introduction: Jerusalem artichoke tubers (JA) contain non-digestible carbohydrates, especially inulin-type fructans, which have been found to possess various benefits on human health, including the prebiotic effect. Although many studies established the prebiotic property of inulin or fructo-oligosaccharides, there are less information of the prebiotic potential of JA crude extract. This study aimed to investigate prebiotic effect of the JA extract and develop prebiotic granules from JA extract. Material and Methods: Crude polysaccharide extract of JA was obtained using hot water and freeze-dried method. The selected probiotics, including L. plantarum, L. acidophilus, B. longum and B. breve were used in this study. The prebiotic effect of the JA extract was indicated by bacterial growth and acid production. Parallelly, JA extract granule formulation was developed to be a prebiotic food product. Results: The JA extract at the highest concentration tested (2\%) caused a significant increase in the growth and acid production of every probiotics tested, including L. plantarum, L. acidophilus, B. longum and B. breve. The growth promoting effects of the 2\% JA extract were detected as early as 12 hour-incubation, and this action was maintained throughout the observed incubation period. Conclusions: The developed JA extract granules possessed desirable properties with the moisture content of 4.00{\textpm}0.20\%. The formulated granule was soluble in water and produced a brown and clear solution with slightly sweet taste. Nonetheless, in vivo experiments on the prebiotic effect of the developed preparation should be performed further.

}, keywords = {Granule, Helianthus tuberosus, Jerusalem artichoke, Prebiotic effect, Probiotics}, doi = {10.5530/pj.2020.12.194}, author = {Sakulrat Rattanakiat and Pawitra Pulbutr and Wanwisa Khunawattanakul and Bunleu Sungthong and Kritsanee Saramunee} } @article {985, title = {Effects of the Ethanolic Extracts of Guava Leaves, Licorice Roots and Cloves on the Cariogenic Properties of Streptococcus mutans}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {1029-1036}, type = {Original Research Article}, chapter = {1029}, abstract = {

Introduction: Streptococcus mutans is a major causative pathogen of dental caries. This study aimed to investigate the effects of the ethanolic extracts of Psidium guajava, Glycyrrhiza glabra and Syzygium aromaticum against cariogenic properties of Streptococcus mutans. These medicinal plants have been used traditionally as the ingredients in the herbal mouthwash for the management of dental caries. Methods: The 95\% ethanolic extracts of these medicinal plants were prepared and their phytochemical contents were analyzed by using thin layer chromatography-densitometry. Antibacterial activities of the extracts against S. mutans were evaluated according to broth dilution method. The effects of the extracts against cariogenic properties of S. mutans, which are surface adherence, biofilm formation and acid production, were also investigated. Results: The biological active constituents, quercetin, glycyrrhizic acid and eugenol, were found in P. guajava, G. glabra and S. aromaticum, respectively. The three extracts possessed anti-bacterial activity against S. mutans with the MICs of 1.562, 0.195 and 1.562 mg/mL, respectively. The extracts at every concentration tested (at lower than their MICs) significantly inhibited cariogenic properties of S. mutans, which included inhibitions against surface adherence, biofilm formation and acid production. Conclusion: The ethanolic extracts of guava leaves, licorice roots and cloves produced anti-bacterial and anti-cariogenic activities against S. mutans. These plant extracts thus can potentially be developed as a product for the prevention of dental caries in the near future.

}, keywords = {Cariogenic properties, Glycyrrhiza glabra, Psidium guajava, Streptococcus mutans, Syzygium aromaticum}, doi = {10.5530/pj.2019.11.162}, author = {Nalita Phaiboon and Pawitra Pulbutr and Bunleu Sungthong and Sakulrat Rattanakiat} } @article {772, title = {Inhibitory Actions of Lagerstroemia speciosa (L.) Pers. Aqueous and Ethanolic Leaf Extracts against Carbohydrate-digesting Enzymes}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {November 2018}, pages = {s113-s118}, type = {Original Article}, chapter = {s113}, abstract = {

Context: The leaves of Lagerstroemia speciosa (L.) Pers. (banaba) have been consumed traditionally in several Southeast Asian countries for the treatment of diabetes mellitus. The plasma glucose lowering actions of this medicinal plant were proposed to be linked with several mechanisms of action. However, its inhibitory actions against \α-amylase and \α-glucosidase, which play a major role in the regulation of postprandial plasma glucose, have not been clearly established. Aims: This study thus aimed to investigate the effects of Lagerstroemia speciosa (L.) Pers. aqueous and ethanolic leaf extracts (LSA and LSE extracts, respectively) on in vitro carbohydrate-digesting enzyme activities and enzyme kinetics. Settings and Design: In vitro carbohydrate-digesting enzyme activity assay. Materials and Methods: The activities of \α-amylase and \α-glucosidase were indicated by the amounts of maltose and p-nitrophenol generated in the reactions, respectively. Statistical analysis used: The data were analysed by using one-way ANOVA, followed by Bonferroni post-hoc test. Results: The LSA extract significantly inhibited both \α-amylase and \α-glucosidase enzymes with the IC50s of 1.21\±0.16 and 49.71\±0.86 \μg/mL, respectively. Meanwhile, the LSE extract selectively inhibited \α-amylase activity (IC50 = 22.21\±4.00 \μg/mL) with no apparent inhibition against \α-glucosidase activity. Both LSA and LSE extracts inhibited \α-amylase enzyme in a mixed inhibition manner whilst the LSA extract also acted as a mixed inhibitor against \α-glucosidase enzyme. The extracts possessed higher binding affinities toward the enzymes, indicated by the lower Ki values, when compared to acarbose (positive control). Conclusion: These results suggest the potential use of the extracts for a control of postprandial plasma glucose.

}, keywords = {Diabetes mellitus, Lagerstroemia speciosa (L.) Pers., α-amylase, α-glucosidase}, doi = {10.5530/pj.2018.6s.22}, author = {Wanwisa Khunawattanakul and Passakorn Boonma and Ronnarit Kampetch and Achida Jaruchotikamol and Benjamart Cushnie and Sakulrat Rattanakiat and Pawitra Pulbutr} }