Pharmaciana
Not a member yet
486 research outputs found
Sort by
Antibacterial activity of fractions from papaya seeds (Carica papaya L.) extract against Escherichia coli and Salmonella typhi and the contributing compounds
Get PDFPapaya (Carica papaya L.) seed has been reported to have antibacterial activity against Escherichia coli and Salmonella typhi. It contains compounds like alkaloids, flavonoids, saponins, and terpenoids. This study aimed to determine the antibacterial activity of fractions from the ethanolic extract of papaya seed against Escherichia coli and Salmonella typhi and identify the specific compounds that contribute to their efficacy. Papaya seeds were extracted through maceration with 70% ethanol solvent, and the extracts were subjected to fractionation with n-hexane, ethyl acetate, and water solvents and followed by a diffusion method to examine the antibacterial activity of both extracts and fractions. Fractions with a series of concentrations were used, namely 10-50% (n-hexane and ethyl acetate fractions) and 100-500% (water fraction). The compounds of the ethanolic extract and its fractions were identified with phytochemical screening. The results showed that the n-hexane and water fractions exhibited antibacterial activity against Escherichia coli when applied at a minimum of 10% and 100% concentration, respectively, but not against Salmonella typhi. Meanwhile, starting from 10% concentration, the ethyl acetate fraction was able to prevent the growth of both Escherichia coli and Salmonella typhi. The compound detection tests revealed that the n-hexane fraction contained alkaloids and terpenoids, the ethyl acetate fraction had alkaloids, flavonoids, and saponins, and the water fraction comprised flavonoids and saponins.Â
Anti-inflammatory effects of avocado peels against inflammation induced by carrageenan in mice
Get PDFThe aim of this research is to investigate the anti-inflammatory activity of avocado peel against carrageenan-induced inflammation in mice. The group of mice that was used as a negative control group to test the anti-inflammatory activity of infusion and decoction (group I) were given aquadest, while the group for testing the activity of extract (group II) was given CMC-Na. The positive control group (group III) was given potassium diclofenac. Groups IV-VI were given avocado peel infusion with the following doses 667.5; 1335; and 2670 mg/kgBW respectively. Groups VII-IX were given avocado peel decoction with the same doses as the previous groups. Groups X-XII were given 830; 1670; and 3330 mg/kgBW of avocado peel extract respectively. The paw edema were measured using a digital caliper for 6 hours afterwards after carrageenan injection. There were a significant (p<0.05) reduction in paw edema at all doses of infusion, decoction, and extract of avocado peel. Based on the research, it can be concluded that the avocado peels have anti-inflammatory activities
Enhancing the dissolution rate of mefenamic acid with solid dispersion system using avicel PH-101
Get PDF Mefenamic acid, based on the Biopharmaceutics Classification System (BCS), is a class II drug that has high permeability but low water solubility. To improve its intrinsic dissolution rate, it is usually combined with a hydrophilic and porous drug carrier like Avicel to create a solid dispersion. This study aimed to enhance the intrinsic dissolution rate of mefenamic acid using a solid dispersion with Avicel PH-101. The test of intrinsic dissolution rate involved a rotational speed of 60 rpm and CO2-free water with a temperature of 37°C as a medium. The interaction of mefenamic acid and Avicel PH-101 was analyzed with FTIR and DSC spectroscopy. The test results showed that the intrinsic dissolution rates (in mg.cm-2.minute-1) of three replications of mefenamic acid, Solid Dispersion of Mefenamic Acid and Avicel PH-101 (SDMA) with 1:1 ratio, SDMA with 1:2 ratio, Physical Mixture of Mefenamic Acid and Avicel PH-101 (PMMA) with 1:1 ratio, and PMMA with 1:2 ratio were (8.0x10-4 ± 3.0x10-4), (38.0x10-4 ± 3.0x10-4), (67.0x10-4 ± 10.0x10-4), (20.0x10-4 ± 6.0x10-4), and (44.0x10-4 ± 14.0x10-4), respectively. The interaction between mefenamic acid and Avicel PH-101 created a hydrogen bonding, as evidenced by the shift in the peaks of FTIR spectra. Based on the DSC thermogram, the mefenamic acid-Avicel PH-101 interaction shifted the steep peak on the curve of mefenamic acid slightly. Avicel PH-101 in this solid dispersion can increase the intrinsic dissolution rate of mefenamic acid through hydrogen bonding instead of decreasing its crystalline structure into an amorphous from
Solvent concentration effect on total flavonoid and total phenolic contents of Averrhoa bilimbi leaf extract
Get PDFAverrhoa bilimbi is one of the Indonesian indigenous plants containing phenolic and flavonoids which exhibit several ethnopharmacological effects i.e. antidiabetic, anti-microbial, anti-inflammatory, cytotoxic, anti-oxidant, antifertility, and antibacterial activities. However, the optimum solvent for extracting these compounds using percolation have not been reported, yet. This research was aimed to evaluate the various concentrations of ethanol solvents towards total phenolic (TPC) and total flavonoid content (TFC). Extraction was carried out using percolation technique with ethanol solvent ratio of 50%, 70%, and 96%. The phytochemical screening, thin layer chromatography, total flavonoids, and total phenolic levels were obtained from the concentrated extract. The TPC and TFC were determined using visible spectrophotometry method. Phytochemical screening study indicated that ethanolic extract contains classes of flavonoids, phenolic, alkaloid, saponins, and steroids. The TFC of ethanolic extract with 50%, 70%, and 96% solvent concentrations were investigated at 62.74, 64.81 and 59.1 mg RTE / g extract, respectively while the TPC were recorded as follows: 103.79; 119.47; 110.10 mg GAE / g extract. Hence, 70% ethanol were higher among others, and therefore remains as optimum solvent for the extraction of A. bilimbi leaves.Â
Identifying active compounds of soursop ethanolic fraction as α-glucosidase inhibitor
Get PDFPostprandial hyperglycemia is triggered by two enteric proteins (α-amylase and α-glucosidase) connected to the brush border of intestinal cells. In diabetic populations, Type 2 Diabetes Mellitus is more prevalent, and α-glucosidase inhibition is the suitable therapy for delaying glucose intake after meals. This study was designed to investigate chemical compounds for their potential inhibitory effects on α-glucosidase. It employed a spectrophotometric method with p-nitrophenyl-α-D-glucopyranose from Saccharomyces cerevisiae as an alpha-glucosidase substrate. The ethanolic fraction was acquired from assay- or activity-guided fractionation. The findings showed that the ethanolic fraction of soursop leaves exhibited the most significant inhibitory activity with an IC50 of 0.17 μg/ml. The data analysis and active compounds identification were carried out by LC-MS and FT-IR.  The active compounds of the resulted mixture comprised of Muricatin C, cis-Reticulatacin-10-one, and 3-Methylquercetin 7-[galactosyl-(1->4)-glucoside]
In silico analysis of wild-type and mutant KRAS
Get PDFThe mutations of the KRAS gene at codons 12, 13, and 61 have been widely reported with different prognosis. In silico is one approach to explain the characteristics of the mutant genes. This study aimed to reveal the potential energy and fluctuations of the binding site and active site of wild-type KRAS (KRAS Wt) and mutant KRAS (KRAS Mt) at codons 12, 13, and 61. The samples used in this study were the sequences of KRAS Wt and KRAS Mt genes, which were subjected to in-silico analysis that included molecular homology, docking, and dynamics using MOE, PyMOL, and online CABS servers. The results showed that fluctuations in the binding site of all KRAS Mt were lower than that of KRAS Wt. On the contrary, the active site (switch I and switch II) of KRAS Mt fluctuated more widely than KRAS Wt. The potential energy of KRAS Mt before forming a complex with GTP was higher (p<0.01) than KRAS Wt. After this formation, it remained higher at codons 12 and 61 but lower at codons 11 and 13 (p <0.001). Mt G12A did not show any changes. The higher fluctuations in the switch I and switch II regions and the post energy of KRAS-GTP complexes may explain why types of cancers with mutations at codons 11 and 13 have a better prognosis than those with mutations at codons 12 and 61
In vitro immunomodulatory activity test of Bengle rhizoma extract (Zingiber cassumunar Roxb.): phagocytic activity of macrophages and lymphocyte proliferation in mice
Get PDFImmunomodulators are pharmacological agents that affect the immune system at different levels. Aside from modulating, some immunomodulators stimulate, while some others inhibit immune responses. Zingiber cassumunar Roxb. or Bengle rhizoma has been reported to exhibit immunomodulatory activities. This research was intended to determine the pharmacological effects of its extract on the phagocytic activity  of  macrophages and lymphocyte proliferation in vitro. It used the macrophages and lymphocytes of male BALB/c mice, which were divided into normal control and treatment group (receiving 25, 50, and 100 ppm of extract). The immunomodulatory activity test results showed that 100 ppm of Bengle rhizoma extract reduced phagocytosis in macrophages much significantly than the control group and that the treatment groups suppressed the proliferation of lymphocytes more  substantially than the control group. The extract decreased the phagocytic activity of macrophages and the proliferation capacity of lymphocytes when administered at a concentration of 100 ppm
Esterification of p-hydroxybenzoic acid with glucose using a γ-Al2O3/SO4 catalyst
Get PDFEsterification of p-hydroxybenzoic acid with glucose can be expected to produce esters. The rate of esterification reaction is usually very slow and, therefore, needs an acid catalyst to accelerate it. This research examined the performance of a heterogeneous catalyst made of γ-Al2O3 impregnated with a protic acid, H2SO4. The heterogeneous catalyst, γ-Al2O3/SO4, was characterized using XRD, XRF, and BET methods. The esterification reactions were conducted using dimethyl sulfoxide (DMSO) solvent at a temperature of 1000C and observed after they lasted for 1 to 24 hours (reaction time). The esterification of p-hydroxybenzoic acid with glucose used two catalysts, namely 3% SO42-/Al2O3 and 5% SO42-/Al2O3. The reaction products were analyzed using HPLC, IR, and LC-MS methods. The % yield was the highest at Hour 24 for both catalysts, while the % conversion fluctuated during the esterification time. The LC-MS showed that the three produced esters had molecular weights of 300, 420, and 540
Formulation of functional beverages from the combination of lime, tomato, and carrot using foam-mat drying method
Get PDF Lime, tomato, and carrot are natural ingredients widely used both as food and herbal medicines particularly because these plants contain various antioxidant compounds such as vitamin C, phenolics, flavonoids, and carotenoids. Since these materials are easily damaged when exposed to high temperatures, any processing methods that involve slight quality changes in the final product are favorable. This study aimed to formulate lime, tomato, and carrot into functional beverages using foam-mat drying method. Lime juice combined with either tomato paste or carrot juice was mixed with egg white and methylcellulose as foaming agents, then whipped using a mixer for 10 minutes to form a stable foam. The foam was placed in a stainless tray, flattened, and dried in an oven at 60°C for 5 hours. Once dried, the mass was scraped using a spatula, and the resultant dry powder was then evaluated for its physical characteristics and antioxidant activities using nitrite oxide (NO) method. The produced dry mass of lime, lime-tomato (1:1), and lime-carrot (1:1) had organoleptic characteristics, water content, sugar content, and food additives content in accordance with the Indonesian National Standard (SNI). Also, with the IC50 values of 4248, 4931, and 4218 µg/ml, the lime juice and its combination with tomatoes (1:1) and carrots (1:1) can be formulated into functional powder drinks that comply with the SNI quality requirements. Lime-carrot is a better combination than lime-tomato
In-Vivo Analgesic And Anti-Inflammatory Effects Of Eel (Anguilla bicolor bicolor) Oil
Get PDFAnalgesic and anti-inflammatory tests of eel (Anguilla bicolor bicolor) oil on animal models have been performed. Previous studies have proven that oral administration of EPA and DHA exhibits analgesic and anti-inflammatory effects. Gas Chromatography analysis shows that eel contains EPA and DHA. In this research, the analgesic activity was evaluated with the acetic acid-induced writhing test and hot plate test, while the anti-inflammatory properties were identified using carrageenan-induced inflammation. In the writhing test, 25 male Swiss Webster mice were divided into five groups. Group I was given 0.5% CMC-Na as a negative control, group II was given 65 mg/kg b.w. of Acetosal as a positive control, group III-V was given eel oil at different doses, namely 2400, 4800, and 9600 mg/kg b.w. of the mouse. For the hot plate test, 6.5 mg/kg b.w. of tramadol acted as the positive control. Similar to the analgesic effect analysis, the anti-inflammatory test also divided 25 male Wistar rats into five groups. Group I as a negative control was given 0.5% CMC-Na, Â group II was given 9 mg/kg b.w. of diclofenac potassium as a positive control, and group III-V were given eel oil at different doses, namely 1500, 3000, and 6000 mg/kg b.w. of the rat. The results of the acetic acid-induced writhing test and hot plate test showed that when compared with the positive and negative controls, eel oil had a potential analgesic activity with a significance value of p< 0.05. The analgesic effects were noticeable at doses of 2400, 4800 and 9600 mg/kg b.w. in the writhing test and at 4800 and 9600 mg/kg b.w. in the hot plate test. The anti-inflammatory test showed that eel oil was efficacious when administered at the doses of 1500, 3000, and 6000 mg/kg b.w. with percentage inhibition of 34.35%, 35.132%, and 40.28%, respectively.Â