@article {2008, title = {HPTLC Comparision Studies with Marker Compound and Isolation of Rutin Anti Inflammatory Agent from Ethanolic Leaf Extract of Rivea Hypocrateriformis (Desr.) Choisy}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {April 2023}, pages = {353-358}, type = {Research Article}, chapter = {353}, abstract = {

Introduction: To extract the leafy parts with ethanol and perform the HPTLC studies with marker compounds Quercetin, Rutin, and gallic acid then a compound was isolated and susceptible to spectroscopic analysis Background: Rivea hypocrateriformis (Desr.) Choisy holds Convolvulaceae family the leafy parts underwent a Soxhlet extraction with ethanol which was then subjected to a phytochemical investigation that shows the presence of alkaloids, phenols, flavonoids, terpenoids, tannins, glycosides saponins, sterols, and carbohydrates. Material and Methods: Firstly, the ethanolic leaf extract is treated with petroleum ether to remove excess lipids, sterols, and impurities. TLC was performed by toluene: ethyl acetate: formic acid and the same solvent system was used for column chromatography. The bands getting separated into the column were collected separately in a test tube. Once the solvent toluene ends, the next solvent system with 18 ml of toluene and 2 ml of ethyl acetate, is introduced into the column, and continues the separation procedure. Collect separated bands and perform TLC of each separate band by using the same solvent system in a concentration of 5:4:1. A single component on a TLC plate with a solvent system of 12 ml toluene and 8 ml ethyl acetate was obtained whose characterization was done by IR, NMR, and mass. Results: The RF value of Rutin is 0.17 which correlates with the Retention factor of ethanolic leaf extracts of RH by HPTLC comparative studies and a compound was isolated by column chromatography. Conclusion: These studies have concluded that a compound is separated by means of HPTLC and spectroscopic interpretation and identified as Rutin.

}, keywords = {Column chromatography, HPTLC studies, Marker compound, Rivea hypocrateriformis ethanolic leaf extract, TLC plates.}, doi = {10.5530/pj.2023.15.54}, author = {Shanthini Nachiar G and Thirumal M} } @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 {1310, title = {Isolation and Structural Characterization of Phytoconstituents from Strobilanthes kunthianus}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {November 2020}, pages = {1605-1611}, type = {Research Article}, chapter = {1605}, abstract = {

Background: Strobilanthes kunthianus T Anders (Neela kurinji) is well known for its medicinal properties and reported to possess many biological activities. However, so far there is no phytoconstituents are isolated and reported in S. kunthianus. Objective: The present study aimed to isolate and characterize the chemical constituents present in various parts of S. kunthianus. Methods: The successive petroleum ether root and stem extracts, chloroform stem extract, macerated and crude methanol flower extracts were subjected to column chromatography for the isolation of constituents. All the isolated compounds were characterized based on their physical and spectral data analysis. Results: Ten compounds were isolated and being reported for the first time from S. kunthianus. Except lupeol (1 and 2), betulin (3), α-amyrin (5) and β-sitosterol (7), other five compounds including of 3,5-bis-(dimethylcarbamoyl)methyl)-4-(11- cyclohexylundecyl)-4-heptyl-N1,N1,N7,N7 tetramethylheptanediamide (4), 4-amino-tetrahydro- 2H-pyran-3,5-diol (6), 2-(2-hydroxyethyl)-3-methyl-4-((E)-3,6-dimethylundec-4-enyl)cyclohexyl propionate (8), flavone glycoside (9) and decahydro-1,1,4a,8-tetramethylphenanthren- 2(1H,3H,4bH)-one (10), isolated from S. kunthianus were novel. Conclusion: The novel compounds need to be further investigated for ascertain pharmacological activities which will be useful for further drug development.

}, keywords = {Column chromatography, Flavone glycoside, Neela kurinji, Phytoconstituents, Strobilanthes kunthianus}, doi = {10.5530/pj.2020.12.220}, author = {Geetha Balasubramaniam and Mahendran Sekar and Subban Ravi and Shrishailappa Badami} } @article {630, title = {Antioxidant Activity of Fractions from Garcinia hombroniana Pierre Leaves Extracts}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {June 2018}, pages = {682-685}, type = {Original Article}, chapter = {682}, abstract = {

Introduction: Radicals were compounds that generated in normal metabolism and create cell damage. A significant increase of free radical and decreased radical elimination can lead to oxidative stress. Oxidative stress plays an important role in the development of many diseases. Enhanced supply of antioxidants will help prevent the morbidity of many diseases. Garcinia hombroniana Pierre has potency as an antioxidant, but study to evaluate the active fractions as an antioxidant has not been done. Objective: The objective of the study was to evaluate antioxidant activity of fractions separated from ethyl acetate (EtOAc) and methanol (MeOH) extract of Garcinia hombroniana leaves and to obtain active fractions to facilitate finding a pure antioxidant compound. Methods: The extract was fractionated using column chromatography, while antioxidant activity assay was conducted in vitro using spectrophotometric methods with DPPH and FRAP method. Results: EtOAc extract of G. hombroniana leaves yielded EA-8 with radical scavenging percentage 32.67\% (10 ppm, with DPPH method) and EA-11 with antioxidant activity percentage 25.73\% (10 ppm, with FRAP method) as the most active fraction from EtOAc extract, while MeOH extract yielded M-3 with radical scavenging percentage 37.42\% (10 ppm, with DPPH method) and 26.70\% (10 ppm, with FRAP method) as the most active fraction from MeOH extract Conclusion: Most active fractions has good antioxidant activity, worthy for further study to isolate antioxidant compound which is responsible for antioxidant activity. However, the percentage of radical scavenging or antioxidant activity of all active fractions were smaller than quercetin as a positive control.

}, keywords = {Column chromatography, Free Radicals, Spectrophotometric thin layer chromatography}, doi = {10.5530/pj.2018.4.112}, url = {http://fulltxt.org/article/650}, author = {Nita Triadisti and Rani Sauriasari and Berna Elya} } @article {348, title = {Fractionation and α-glucosidase Inhibitory Activity of Fractions from Garcinia hombroniana Pierre Leaves Extracts}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {May 2017}, pages = {488-492}, type = {Original Article}, chapter = {488}, abstract = {

Background: Diabetes mellitus become one of the biggest global health problems of the 21st century. Type 2 diabetes play role for the majority of cases of diabetes worldwide which is characterized by the increase of postprandial blood glucose level. Maintaining postprandial glucose level through inhibition of \α-glucosidase is one of the essential strategies in the treatment of diabetes. Inhibitory effect of \α-glucosidase was commonly used to identify active compounds potentially to treat diabetes. Natural resources have potency as antidiabetic that can be used in diabetes treatment. Objective: The objective of the study is to separate active fraction in the crude extract of Garcinia hombroniana leaves to facilitate obtaining a pure biologically active compound as the \α-glucosidase inhibitor. Methods: Fractionation to separate active fraction was performed using column and thin layer chromatography methods while \α-glucosidase inhibitory activity assay was performed in vitro using spectrophotometric methods at \λ 400 nm. Results: Ethyl acetate and methanol extract of G. hombroniana yielded 14 and 12 fractions, respectively. Two fractions with the higher percent inhibition compared to other factions are fraction 8 from ethyl acetate extract (FEA8) and fraction 3 from methanol extract (FM3). The IC50 values of FEA8, FM3 and acarbose are 16.370 \μg/mL, 59.042 \μg/mL, and 39.534 \μg/mL respectively. Conclusion: Fraction 8 from ethyl acetate extract of G. hombroniana leaves (FEA8) was separated and known in this study as the most bioactive \α-glucosidase inhibitor agent compared with another extract, fractions, and acarbose.

}, keywords = {Column chromatography, Diabetes mellitus, Fractionation, Thin layer Chromatography, α-glucosidase}, doi = {10.5530/pj.2017.4.79}, url = {/files/PJ-9-4/10.5530pj.2017.4.79}, author = {Nita Triadisti and Rani Sauriasari and Berna Elya} }