@article {1624, title = {Isolation and Structural Characterization of Compounds from Blumea lacera}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {July 2021}, pages = {999-1004}, type = {Research Article}, chapter = {999}, abstract = {

Background: The medicinal plants consider as a rich resource of ingredients which can be used in drug development and synthesis. Blumea lacera (Burm. f.) DC. is generally used in traditional medicine for the treatment of cough, bronchitis, dysentery, wound healing. The aim of this study is to isolate and identify the compounds from the aerial parts of Blumea lacera. Methods: The aerial parts of B. lacera were dried, powdered and extracted using EtOH, and the concentrated extract was partitioned in succession with n-hexane, CH2Cl2, and EtOAc. From the EtOAc fraction, the compounds were isolated through column chromatography and their chemical structures were elucidated by NMR spectroscopy and confirmed by comparison of their NMR data with literature data. Results: Repeated column chromatography of the EtOAc-soluble fraction from the aerial parts of B. lacera resulted in the isolation of β-sitosterol (1), campesterol (2), artemetin (3) and acid paracatechuic (4).

}, keywords = {Asteraceae, Blumea lacera, Column chromatography, Flavonoid}, doi = {10.5530/pj.2021.13.129}, author = {Xuan Phong Pham and Tran Thi Tuyet Nhung and Hoai Nam Trinh and Do Minh Trung and Dang Truong Giang and Binh Duong Vu and Nguyen Trọng Diep and Nguyen Van Long and Van Thu Nguyen and Chu Van Men} } @article {1323, title = {A New Ursane-Type Triterpene from the Fermented Shallot Allium Ascalonicum}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {January 2021}, pages = {01-07}, type = {Original Article}, chapter = {01}, abstract = {

3,24-acetonideclethric acid (1), a new ursane-type triterpene, and four known compounds including ursolic acid (2), randiasaponin IV (3), ilekudinoside W (4) and (25S)-1β,3β,24β- trihydroxyspirost-5-en 1-O-α-L-rhamnopyranosyl-(1{\textrightarrow}2)- α-L-arabinopyranoside (5), and were isolated from the fermented shallot Allium ascalonicum. Their structures were determined by analysis of HR-ESI-MS, NMR spectral data, as well as comparison with those reported in the literature. All of the saponins (3-5) exhibited antimicrobial activity against three strains Staphylococcus aureus, Escherichia coli, and Candida albicans with IC50 values in the range from 89.49 {\textpm} 2.24 to 95.71 {\textpm} 3.86 μM.

}, keywords = {24-Acetonideclethric acid, 3, Allium ascalonicum, Antimicrobial activity, Saponin}, doi = {10.5530/pj.2021.13.1}, author = {Nguyen Van Chuyen and Nguyen Hong Son and Pham Van Hien and Dang Truong Giang and Ho Ba Ngoc Minh and Ngo Thi Tuyet Mai and Chu Van Men and Ho Anh Son and Vu Binh Duong} } @article {1120, title = {Phenolic Compounds from Caesalpinia sappan}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {March 2020}, pages = {410-414}, type = {Research Article}, chapter = {410}, abstract = {

Introduction: Caesalpinia sappan L., a traditional ingredient of food and beverages in South East Asia, was investigated for its chemical constituents. Methods: The compounds were isolated by column chromatography and their chemical structures were elucidated by NMR spectroscopy and confirmed by comparison of their NMR data with literature data. Results: Repeated column chromatography of the EtOAc-soluble fraction from the heartwood of C. sappan resulted in the isolation of sappanchalcone (1), caesalpiniaphenol G (2), and quercetin (3). Conclusion: Three phenolic compounds have been successfully isolated from C. sappan.

}, keywords = {Analgesic, Caesalpinia sappan, Caesalpiniaceae, Homoisoflavonoids}, doi = {10.5530/pj.2020.12.63}, author = {Van Ba Nguyen and Binh Duong Vu and Gia Khanh Pham and Bach Quang Le and Van Chuyen Nguyen and Chu Van Men and Van Thu Nguyen} } @article {962, title = {A New LC/MS/MS Method for the Analysis of Phyllanthin in Rat Plasma and its Application on Comparative Bioavailability of Phyllanthin in Different Formulations after Oral Administration in Rats}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {968-975}, type = {Original Article}, chapter = {968}, abstract = {

Introduction: A simple, short UPLC/MS/MS method for quantitation of phyllanthin in rat plasma in less than 2 minutes have been developed and fully validated. The validated method was used to investigate the pharmacokinetic properties of phyllanthin in PA extract and phospholipid complex of PA extract in rat. Methods: The separation was carried out on Acquity C18 (50 x 2.1 mm; 1.7 μm), with a mobile phase of 10 mM aqueous amonium acetate and acetonitrile (10:90; v/v), at a flow rate of 0.2 mL/min. Felodipin was used as internal standard. Phyllanthin is extracted from a small volume of rat plasma (100 μl) by means of liquid-liquid extraction method with tert butyl methyl ether. Electrospray ionization (ESI) mass spectrometry was applied in positive mode at capillary voltage of 4000 V for both phyllanthin and IS, cone voltage of 24 V for phyllanthin and 20 V for IS, desolvation temperature of 360oC, cone gas flow of 25 L/h, collision energy of 12 V for phyllanthin and 10 V for IS. Multiple reaction monitoring (MRM) was used to monitor the transitions at m/z (Q1/Q3) 436.41/355.36 for phyllanthin and 384.20/352.18 for IS. Results: The linear calibration curve of phyllanthin was obtained over the concentration range of 0.5 {\textendash} 100 ng/mL. The intra- and inter-day precisions were less than 7.08 \% and the accuracies were within {\textpm} 7.55\%. The Cmax values of phyllanthin from two different preparations in rat plasma after oral administration of 2.0 mg/kg were 11.44 and 31.44 ng/ml, and the AUC values were 18.07 and 41.43 h.ng/ml, respectively. Conclusion: A simple, short UPLC/MS/MS method for quantitation of phyllanthin in rat plasma in less than 2 minutes have been developed and fully validated. The bioavailability of phyllanthin from the phospholipid complex of PA extract in rat plasma was significantly improved compared with that of raw PA extract after oral administration.

}, keywords = {LC-MS/MS, Pharmacokinetics, Phospholipid, Phyllanthin, Plasma, Quantitation}, doi = {10.5530/pj.2019.11.153}, author = {Nguyen Van Long and Chu Van Men and Anh Vu Tuan and Nguyen Van Manh and Thanh Chu Duc and Ha Bui Thi Thu and Hoang Van Luong and Le Bach Quang and Pham Gia Khanh} } @article {987, title = {Phytosomal Nanoparticles Preparation of Curcuminoids to Enhance Cellular Uptake of Curcuminoids on Breast Cancer Cell Line MCF-7}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {1037-1045}, type = {Original Article}, chapter = {1037}, abstract = {

Objective: Curcuminoids, the bioactive compounds extracted from Curcuma longa consisting of Curcumin (CUR), demethoxycurcumin (DMC) and bisdemethoxycurcumin (BDMC), have shown promising biological effects, including anticancer activity. This study sought to prepare a physically stable phytosomal nanoparticles of curcuminoids (Curs-Phyto) to facilitate uptake of curcuminoids on breast cancer cells line, and further increase the cytotoxicity against cancer cells. Methods: The evaporation combined extrusion technique was employed to prepare phytosomal curcuminoids nanoparticles. The interaction between curcuminoids and phospholipid by a hydrogen bond was confirmed by differential scanning calorimetry (DSC), powder X-ray diffraction (XRD), fourier transform infrared (FT-IR), and 1H nuclear magnetic resonance (1H-NMR). Their physicochemical characterizations and stability in simulated gastric and intestinal media were investigated. The effects of Curs-Phyto on MCF-7 cells were evaluated by flow cytometry, MTS assay and cell cycle analysis. Results: We found that the Curs-Phyto were formed at a spherical shape with good size (~ 180 nm), a narrow size distribution (PDI \< d0.2), high complexation rate (~ 87\%, 95\%, and 90\% for BDMC, DMC, and CUR respectively) and high loading capacity of curcuminoids. More importantly, the Curs-Phyto showed the increased cellular uptake and enhanced cytotoxicity against MCF- 7 cancer cells, compared to free curcuminoids. Conclusion: These results indicated that the phytosome could be a promising oral delivery system for curcuminoids for cancer treatment.

}, keywords = {Cellular uptake, Curcuminoids, FACS analysis, Nanoparticle, Phytosome}, doi = {10.5530/pj.2019.11.163}, author = {Nguyen Van Long and Bui Thi Thu Ha and Anh Vu Tuan and Hoang Van Luong and Nguyen Tung Linh and Thanh Chu Duc and Phung Cao Dai and Chul Soon Yong and Chu Van Men} }