Biology, Medicine, & Natural Product Chemistry (E-Journal - Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity)
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Bioactivity of Vernonia arborea Leaves from Bentian Tribe as Natural Antioxidant and Antibacterial Based on Local Knowledge
Get PDFThe utilization of natural organic materials as raw materials for standardized medicine, including the use of organic materials in medicine manufacture are currently being encouraged by the Government. Based on the information from Bentian Tribe people, Vernonia arborea leaf or Kutu Bu’ut leaf has the potential to be developed as natural medicine derived from plants. This study explored the potential of V.arborea leaf for its phytochemicals screening by Harborne, Kokate and Senthilmurugan method, antioxidant analysis was evaluated by DPPH radical scavenging assay. Antibacterial analysis was examined using agar well diffusion method against Escherichia coli and Propionibacterium acnes. The results showed that the V.arborea leaf contained alkaloid on n-hexan extract and coumarin on ethyl acetate extract. Ethanol extract from V.arborea leaf contained alkaloid, flavonoid, saponin, tannin, and carbohydrate. Antioxidant activity showed that the highest inhibition by 83% at 50 ppm consentration of ethanol solvent. Antibacterial activity of E. coli and P.acnes showed that the highest inhibition zone by 12 mm and 11 mm at 400 µg/well of ethanol extract. Based on the results, the V.arborea leaf contains natural bioactivity and has potential to be further developed as a natural traditional medicine
In vivo Alpha-amylase and Alpha-glucosidase Inhibitory Potentials of Panicum maximum Jacq. (Guinea grass) Leaf Extract on Wister Rats
Get PDFPanicum maximum Jacq. (Guinea grass) a medicinal plant used traditionally in the treatment of diseases including diabetes was evaluated for its effect on alpha amylase and alpha glucosidase enzymes in vivo. The crude ethanol extracts (150, 300 and 450 mg/kg) of P. maximum were investigated using starch, sucrose, glucose and maltose as substrates and acarbose as reference drug. The leaf extract caused significant (p<0.05) reduction in blood glucose levels of the treated rats with the four substrates used. The findings show that the leaf extract of Panicum maximum has the potentials to inhibit alpha amylase and alpha glucosidase in rats
Anticancer Potential of Ethanolic Extract Artocarpus heterophyllus Lam. Leaves against Human Colon Cancer WiDr Cell Line
Get PDFJackfruit (Artocarpus heterophyllus Lam.) is a plant contains various compounds that has potential as anticancer drugs. Secondary metabolites of jackfruit leaves are flavonoids, alkaloids, tannins, triterpenoids, and saponins. A typical flavonoid compound group in the Artocarpus genus, namely artocarpin, is able to kill cancer cells through apoptosis. Not many have conducted cytotoxicity research and apoptosis induction of ethanolic extracts from jackfruit leaves, especially against WiDr colon cancer cells. Therefore, this study aims to study the cytotoxic effects and apoptosis induction of ethanolic extracts of jackfruit leaves against WiDr colon cancer cells. The research was conducted by cytotoxicity test using the MTT assay. Apoptosis test was done using double staining method with AO/PI dye. The treatment was conducted at various concentrations of ethanolic extract of jackfruit leaves, doxorubicin as positive control, and DMSO as solvent control. The data were analyzed by one way ANOVA (p ≤ 0.05) and continued using Tukey HSD Post Hoc test. The results showed that the ethanolic extract of jackfruit leaves was not toxic to WiDr cells with an IC50 740.43 μg/mL, but could significantly reduce cell viability at a concentration of 500 μg/mL. The ethanolic extract of jackfruit leaves could also induce apoptotic cell death at a concentration of 500 μg/mL. Based on these results, ethanolic extract of jackfruit leaves has little potential to be developed as an anticancer drug
Antibacterial Potency and Physicochemical Profiles of Eucalyptus pellita Leaf Waste Essential Oil from PT Surya Hutani Jaya, East Kalimantan
Get PDFEucalyptus is one of the fast growing species plants, currently used in the pulp and paper industry. The leaves of Eucalyptus are known as forest harvesting waste. This research aim to examine the antibacterial potency and the physicochemical profiles of Eucalyptus pellita leaves waste essential oils grown in PT Surya Hutani Jaya Site 32, East Kalimantan named EP B077. The essential oils distilled using water and steam distillation methods. Analysis of physicochemical profiles from this oil included yield, colour, refractive index, specific gravity, and chemical compositions by GC-MS. Antibacterial activity assayed by agar diffusion method against Staphylococcus epidermidis, Streptoccoccus sobrinus and Streptoccoccus mutans with slight modification. The results showed that EP B077 had the yellow colour, yield oils was 0.44%, 1.471 of refractive index, and 0.8706 of specific gravity. Chemical components of EP B077 oils were dominated by α-Pinene (40.36%), 1-β-Pinene (31.75%), Cyclohexene, 1-methyl-4-(1-methylethenyl)- (9.64%), Trans(β)-Caryophyllene (4.29%) and Eucalyptol (1,8-Cineole) (3.88%). This EP B077 oils was active to inhibit bacteria against S. epidermidis and S. sobrinus range from 9-15 mm, also against S.mutans ranging from 9-14 mm. Based on the results, this Eucalyptus pellita leaves named EP B077 had potential to develop as a new source of essential oil and antibacterial agents
Potential of Soursop Leaf Extract as an Antioxidant in MCF-7 Cells
Get PDFThe frequency of breast cancer tends to increase. Malondialdehyde (MDA) is a marker of oxidative stress as an end product from the chain reaction of lipid peroxidation. The use of traditional medicine soursopleaf (Annona muricata L.) has been reported for a long time because of its bioactivity as an antioxidant. This study analyzes the relationship between MDA levels and glutathione enzymes in MCF-7 cells given the methanol extract of soursop leaves. The methanol extract of soursop leaves was carried out by infusion method. The methanol extract of soursop leaves was given to cancer cells at several doses with an incubation of 24 hours. The cytotoxic test was carried out using the MTT method. Measurement of MDA levels was carried out using the thiobarbituric acid reactive substance (TBARS/TBA) reactivity test method. GSH measurements used the colorimetric method. The results showed that the ethanol extracts of soursop leaves have cytotoxic activity in the MCF-7 breast cancer cell line with IC50 values of 23.96 ppm. Ethanol extract of soursop leaves increased levels of MDA inhibition and GSH level. Soursop leaf extract could increase MDA inhibition GSH level in human breast cancer cells MCF-7
Antimicrobial Activities of Oyster Mushroom (Plerotous ostreatus), Garlic (Allium sativum), and Ginger Extracts (Zingiber officinale) Against Some Clinical Isolates
Get PDFThe prevalence of multiple drug resistance among human pathogenic bacteria necessitates a continual search for new antimicrobial medicines, particularly among plants that are frequently farmed or naturally found in our surroundings. The study aims to investigate the inhibitory effect of garlic, ginger, and mushroom extracts at different concentrations against some clinical isolates. Anti-bacterial components from mushrooms, garlic, and ginger were extracted with hot water, cold water, ethanol, and acetone, and their anti-bacterial activity was determined using the agar well diffusion method. Zones of inhibition were observed primarily on hot water extracts of mushrooms (Pleurotus ostreatus) on culture plates inoculated with Staphylococcus aureus, Escherichia coli, and Klebsiella pneumonia at 370C for 24 hours. The cold water extracts of the mushroom (Pleurotus ostreatus) gave the highest zone of inhibition of 14.0±1.0mm when used against S. aureus. For spices, the cold water extracts yielded the highest zones of inhibition of 22.0±1.0mm followed by 16.0±1.0mm as observed with ginger. The results obtained have shown clearly that the mushrooms (Pleurotus ostreatus), garlic (Allium sativum), and ginger (Zingiber officinale) extracts contain phytochemicals with some antimicrobial activities. The water extracts of the mushrooms and spices showed broad-spectrum antimicrobial activity much more than ethanol and acetone extracts. The antimicrobial activities of mushroom and garlic extracts were highly effective against the bacterial pathogens studied. However, the antimicrobial activity of the ginger extract was poor. To address the multi-drug resistance to antibiotics, I recommend: that bioactive compounds found in mushrooms, ginger, and garlic be patented and used as alternative antimicrobials
Pharmacophore mapping of Angiotensin Converting Enzymes (ACEs): Insight to Binding Site of ACE1 and ACE2
Get PDFAngiotensin Converting Enzymes (ACEs) are carboxypeptidase enzymes involved in the renin-angiotensin system (RAS), which catalyze angiotensin I by cleavage of the peptide bond. ACE1 has been known as a target for antihypertensive drugs. Another homolog of ACE1, ACE2 has been popular since 2020 because this enzyme is responsible for the SARS-COV2 infection in the human body. Interestingly, it was found that ACE1 inhibitors did not inhibit ACE2. Hence, this study aims to elucidate the pharmacophore of ACE1 and ACE2 in order to understand the mechanism of these different inhibitions. Pharmacophore mapping was carried out using a pharmacophore query editor in the Molecular Operating Environment (MOE). The 3D structures of both enzymes bound to respective inhibitors were prepared and their pharmacophore features were extracted. Besides that, the similarity of both enzymes was analyzed by comparing their amino acid sequences using Align in Uniprot. In addition to pharmacophore mapping, the surfaces of both binding sites were analyzed to obtain a comprehensive evaluation. Results showed that both ACE1 and ACE2 contain nine and eight pharmacophore features, respectively. The amino acid residues of both enzymes were quite similar, especially in the active site. However, both ACE1 and ACE2 inhibitors showed different interactions even though both were well aligned. It was found because the functional groups of both inhibitors were slightly different as well as the active site size of both enzymes. Thus, this might result in different ability of ACE1 inhibitors to occupy the binding site of ACE2. These findings could provide useful information in the design of new selective ACE1 compounds as well as ACE2 compounds
Analysis of Heavy Metal Cadmium (Cd) and Lead (Pb) in Eggplant (Solanum melongena L.) in Pontianak City by Using Atomic Absorption Spectrophotometry (AAS)
Get PDFIn Indonesia, eggplant is a favored vegetable with substantial production. The main objective of this study is to investigate the level of safety of eggplants marketed in traditional wholesale markets in Pontianak City against possible contamination of the heavy metals cadmium (Cd) and lead (Pb), which are commonly discovered in water waste, vehicle exhaust, and excessive pesticide and fertilizer use. Alizarin Red S for Cd metal and Dithizon for Pb metal were used in qualitative assays. Cd and Pb levels were measures using an Atomic Absorption Spechtrophotometer (AAS) instrument. The analytical method has been verified for linearity, accuracy, precision, limit of detection, and limit of quantification. The qualitative test results showed that all samples had positive results for Cd and Pb. The quantitative test results revealed that the Cd and Pb metal contents in the FB (Flamboyan) sample were 0.056 mg/kg and 3.5066 mg/kg, consequently, while they were 0.0986 mg/kg and 3.957 mg/kg, consequently, in the PR (Puring) sample. In keeping with BPOM standard No. 5 of 2018, Cd metal levels in FB samples are at a safe threshold, while Cd metal levels in PR samples and Pb metal levels in FB and PR samples exceed the maximum thresholds that have been set
Exploring Allelochemical Compositions in The Roots of Two Varieties of Anacardium occidentale (Cashew)
Get PDFAllelochemicals are chemicals released by plants that affect other plants and pests. The chemicals are provided by different parts of the plant or released through the natural decomposition of the associated plants. Anacardium occidentale has been reported to exhibit allelopathy. The bark and inner parts of the roots of the two varieties (red and yellow) of Anacardium occidental (Linn) were qualitatively and quantitatively analysed for the presence of allelochemicals. The samples were also subjected to Gas Chromatography-Mass Spectrometry (GC/MS) analysis. The qualitative results showed that flavonoids, tannins, and phenols were present in both the bark and inner parts of the roots, whereas alkaloids, saponins, and terpenoids were present only in the bark of the roots. The quantitative results showed that while the root bark of the red variety had the highest saponin content, that of the yellow variety had the highest phenol content. The GC/MS results for both samples showed the presence of different compounds, and one of the compound peaks observed in the inner root was not identified; 9,12– octadecadienoic acid (fatty acid) was the compound with the highest composition identified in the yellow variety. Similar compounds were identified in the root bark of the red and yellow varieties, which include 3-Tridecyl phenol with molecular formula C19H32O and molecular weight 276, which occurred at a retention time range of 41.703–41.712 min and had the lowest percentage compositions of 2.816 and 4.732% in red and yellow varieties, respectively. The compounds with the highest percentage compositions of 32.389 and 41.944% in red and yellow, respectively, were identified as (Z)-3-(Heptadec-10-en-1-yl) phenol (molecular formula C23H38O with molecular weight 330), occurring within the retention time range of 48.246 – 48.263 min. Other compounds with higher percentage compositions were identified in the samples, including (Z)-3-(pentadec-8-en-1-yl) phenol and 3-((4Z,7Z)-Heptadeca-4,7-dien-1-yl) phenol. However, 1,2,4,-Benzenetriol (molecular formula C6H6O with molecular weight 252) was only identified in the red variety, with a percentage composition of 8.883%, which occurred at a retention time of 22.040 min. The compounds identified in the bark were mostly phenols, whereas those in the inner roots were more fatty acids
The Study of Biosurfactant Stability and The Effect on Lipase Activity
Get PDFLipase is one of hydrolase enzyme that catalyzed hydrolysis reaction of triacylglycerols into free fatty acids and monoglycerides or glycerol. These biocatalysts are widely used in several industries, namely food and pharmaceutical industry. The activity of lipase can increase significantly if the substrate forms an emulsion. Since biosurfactant has been known to have emulsification characteristic, the effect of biosurfactant addition into lipase is necessary to be investigated. It is the first report that evaluate the effect of microbial surfactant on lipase activity. The purpose of this research is to analyze the stability of biosurfactant emulsion under various conditions, such as salinity and pH as well as their potential to enhance lipase activity. Biosurfactant used was Halomonas elongata BK-AG18 from the collection of Biochemistry Research Group ITB, Bandung, Indonesia. It was found that after the addition of NaCl, there was no significant decrease in the emulsification activity of the biosurfactant. The emulsification index (IE24) of biosurfactant with several NaCl concentrations (2, 5, 10, 15, 20, and 25%) was obtained around 50%. Stability test of biosurfactant at pH range 4-10 showed the highest IE24 of biosurfactant was obtained at pH 6. The effect of biosurfactants on lipase hydrolysis activity is also discussed in this article. Lipase hydrolysis activity was tested using p-nitrophenyl palmitate substrate. The highest lipase activity was obtained after the addition of 70% biosurfactant (v/v) at 0.026 units. This study shows that biosurfactant from H. elongata BK-AG18 has the potential to increase lipase activity