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Exploration of potential wild medicinal mushrooms from Pocut Meurah Intan forest park, Aceh, Indonesia
Get PDFMushroom is one of living things with abundant diversity and has various beneficial potentials; one of them is as medicine. The use of mushrooms as medicine has long been known primarily as traditionally made herbs and the knowledge has been passed down for generations. The Pocut Meurah Intan Forest Park as a conservation forest, stores a variety of mushrooms in it. Data about the type of mushroom that has medicinal potential existed in the forest park has never been published so it is important to do so. This study aims to record the types of mushrooms that have benefits as medicines. The method used is an exploratory survey through a trail or tracking path then identified as a medicinal mushroom base on literature studies. The results of the study found 15 species of mushrooms that have potential as medicine, namelyCookeina tricholoma, Sarcoscypha coccinea, Tremella fuciformis, Auricularia auricula-judae, Flammulina velutipes, Schizophyllum commune, Scleroderma citrinum, Boletus edulis, Trametes versicolor, Lentinus tigrinus, Lentinus squarosulus, Ganoderma applanatum, Ganoderma resinaceum, Thelephora ganbajun and Lycoperdon echinatum. This shows that Pocut Meurah Intan Forest Park has great resources and potential that can be utilized for the benefit of the surrounding community, and it needs to be preserved so that diversity is maintained and can be used by future generations
Study of white frangipani flower and bitter grape stem ethanol extract combination on antibacterial and antioxidant activities
Get PDFFrangipani flower (Plumeria acuminata) and bitter grape (Tinospora crispa L. Miers) stem extract alone shows antimicrobial and antioxidant activities. However, there is a limited report about the actions from the combination of both extracts. Combinations of ethanol extract of white frangipani flower (EFF) and ethanol extract of the bitter grape stem (EBS), each of 0, 1, 2, and 3% were tested for inhibition against Staphylococcus aureus growth and DPPH (1,1-diphenyl,2-picrylhydrazyl) free radicals. A yield of 3.17 and 2.62 g of EFF and EBS, respectively, were resulted from 100 g of dried powdered of the white frangipani flower and bitter grape stem using 200 mL of absolute ethanol. The antimicrobial test was assayed using a 10% stock solution of extract diluted in water. The combination of EFF and EBS showed a synergistic effect on antimicrobial activity, but it proved an antagonistic effect on antioxidant activity. The combination of EFF 3% and EBS 3% showed the highest inhibition index on the S. aureus growth , i.e. 2.020.06, which is higher than the inhibition index of Amoxycillin 2%, i.e. 1.850.09. The highest antioxidant activity showed by 1% EFF alone (57.5 0.60%), while the lowest was from the combination of EFF 1% and EBS 3% (23.40.30%)
Determination of the crystallite size and crystal structure of magnesium powder by x-ray diffraction
Get PDFMagnesium powder has become an important material in the development of science and technology such as alloy and hydrogen storage. In this work, the chemical composition, crystallite size, and crystal structure of the magnesium powder sample have been studied by using x-ray fluorescent and x-ray diffraction. The x-ray diffraction data of the magnesium powder sample was analyzed by using the Rietveld method to obtain the crystal structure. Our results show that the purity of our magnesium powder sample is 93.1%. Our sample has good crystallinity with the average crystallite size of 31 nm. The crystal structure is found to be a hexagonal closed-packed structure with the lattice constants of 3.2100 (a and b-axis) and 5.2107 (c-axis). Our result revealed that the lattice constant in the c-axis of magnesium powder is influenced by impurity. This finding suggests that the impurity can affect the crystal structure of a material in general
Mechanical and morphological characteristic investigations of deinked used newsprint paper via ultra-sonochemistry method
Get PDFPrinted newspaper is one of the print-based media published daily in large quantities. The focus of this research is to remove the ink from used newsprint with alkaline treatment by using ultrasound sonochemistry method. Newsprint sheets collected were characterized by mechanical and morphology tests using FT-IR, XRD, tensile test and SEM. FT-IR spectra analysis shows the absorption of C=C functional groups as the main components of newspapers at 1427 and 1635 cm-1 wavelengths. The treatment with alkaline solution increased the mechanical strength properties of paper. SEM morphology analysis result shows that the surface of paper becomes more rough after ultrasound-alkaline treatment compared to paper without ultrasound treatment (conventional treatment). The crystallinity value decreased with alkaline treatment. The longer the ultrasound duration was, the lower the crystallinity degree became
THE EFFECT OF SOME OF COCONUT WATER CONCENTRATION IN ARTIFICIAL MEDIA TO CHRYSANTHEMUM GROWTH (Dendranthema grandiflora) BY IN VITRO
Get PDFArtificial medium for in vitro culture is an alternative media to subtitute Murashige and Skoog (MS). Growmore added with organic substances as coconut water can be used as artificial medium. Coconut water can affect plant growth, so the research is to investigate the influence of coconut water in different concentration to chrysanths (Dendranthema grandiflora) growth should be done. The research was conducted in Laboratory of Molecular and Cell Biology, Department of Biology, Faculty of Mathematics and Natural Sciences, Syiah Kuala University Darussalam, Banda Aceh, from April until July 2013. The research was designed by using Randomized Block Design with sub sampling. Media act as group, while coconut water concentration as treatment. Observation was started from growing time up to a month after planting. The result showed that there was no significant different between using MS and artificial medium with different coconut water concentration to initiate shootlet
PREPARATION OF CHITOSAN-CELLULOSE COMPOSITE BEADS USING CELLULOSE ISOLATED FROM SUGARCANE BAGASSE
Get PDFChitosan-cellulose composite beads had been prepared using cellulose isolated from sugarcane bagasse. Sugarcane bagasse was hydrolyzed with H2SO4 with various concentrations (30, 40, and 50%). Cellulose obtained was characterized using Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). FTIR analysis results inform the existence of typical functional groups of cellulose in the sample. XRD patterns show H2SO4 concentration on the hydrolysis process influence the crystallinity of cellulose. Cellulose was used as a filler in the preparation of chitosan-cellulose composite beads. The results show that cellulose decrease the crystallinity of chitosan
PREPARATION OF INORGANIC CATALYST BASED HEMATITE (a-Fe2O3) COMPOUND EXTRACTED FROM ACEH IRON ORE MINERAL AND ITS CATALYTIC ACTIVITY ON TRANSESTERIFICATION OF COCONUT OIL
Get PDFHematite (Fe2O3) was successfully extracted from the Aceh iron ore mineral by precipitation method with employing sulphuricacid (H2SO4) as chemical agent. Furthermore, the extracted hematite was modified with sodium metal (K), namely it doped with NaOH of 5% and 10% (w/w), respectively. Based on the characterization results using XRD and SEM- EDS proved that modified catalyst (Na2O/Fe2O3) with their homogeneous size were resulted while the hematite (Fe2O3) particles was dopped withNaOH at its low concentration of (5% wt/wt), however while doping with the higher concentration of NaOH (10% w/w), agglomeration was taken place among the catalyst particles in which decreasing the surface area of the modified catalysts. Finally, the modified catalyst (Na2O/Fe2O3) was successfully applied as an inorganic catalyst on transesterification of coconut oil and methanol (T = 55 60oC, 2 h)for forming methyl esters asbiodiesel compounds
GOOGLE MAPS AND MAPBOX API PERFORMANCE ANALYSIS ON ANDROID-BASED LECTURE ATTENDANCE APPLICATION
Get PDFAttendance is an inseparable component from lectures. The current manual attendance process still has its weaknesses, such as the loss or broken attendance sheets, the easiness to conduct fraud on the attendance sheets, and other cases. The attendance system using fingerprint devices are also not available in other locations yet, such as lectures that are done on the field or outdoor, where fingerprint devices are not available. Because of that, an online lecture attendance system that makes use of Android-based smartphones is developed in order to tackle the problem. This online lecture attendance system has the main feature of recording students attendances in a radius of 300 metres from the lecturer. This application is named Lecture Attendance System is developed using Rapid Application Development (RAD) model, because it is an effective method to minimise errors in the application. There are two testing performed to the application. The first testing was functional testing of the application. This testing was carried out in order to make sure that all functionalities and features are performing well. The second testing carried out is the distance accuracy testing, to compare between the Google Maps and MapBox API distances. From this testing, it was found that the error percentage using Google Maps is 9.250% and 12.128% for MapBox. From these results, they show that in calculating the distance, using Google Maps API has higher accuracy compared to the MapBox API
CHARACTERISTICS OF NATURAL MAGNETITE (Fe3O4) FROM BEACH SAND AS CATALYST APPLICATION IN MATERIALS INDUSTRY
Get PDFAn identification of magnetite nanoparticles synthesized from natural iron sand using co-precipitation method has been conducted. The treatment was undertaken at room temperature and the heating used a pair of acid-base compounds, namely HCL as a solvent and NH4OH as a precipitate. Crystal structures, percentages of elements, particle sizes and magnetic characteristics of the materials were characterized by testing XRF, XRD and Permagraph. The results were then compared with the commercial material purchased from Aldrich (with 97% purity). From the results, it was found that the percentage value of the purity of Fe3O4 derived from natural sand before the extraction was 81.42%, and after the extraction it increased to 86.73%. Furthermore, the saturation magnetization (Ms) value for Fe3O4 ferrite from iron sand was 0.29 T, the residual magnetization or Remanen (Br) was 0.081 T, and Coersivity (Hc) was 1.82 kA/m
TEST OF ANTI-INFLAMATION ACTIVITIES OF PEPAYA LEAF (Carica papaya L.) EXTRACT ON MALE WISTAR RATS INDUCED BY CARAGENAN 1%
Get PDFInflammation is a normal protective response to tissue injuries caused by physical trauma, destructive chemicals, or microbiological substances. The purpose of this study was to determine the anti-inflammatory activity of papaya leaf water extract (Carica papaya L.) on the feet of male Wistar rats which were induced by carrageenan 1%. The research method used is experimental. The stages of this study include plant identification, making dry simplicia powder, simplicia characteristics, extracting papaya leaves using water, simplicia phytochemical screening and papaya leaf water extract (EADP), as well as testing for anti-inflammatory activity. Anti-inflammatory testing was carried out on 20 male Wistar rats induced with 1% carrageenan sub plantar. The test group was divided into five groups for the induction, comparison, EADP 50, 100, 200 mg/kg BW groups. The parameters observed were the volume of mouse leg udema measured by a pletismometer every 30 min for 5 h. Data obtained then calculated percent inflammation and percent inflammation inhibition. Furthermore, it was analysed by ANOVA with a confidence level of 95%. The results of the simplicia characteristics showed that the water content, water content of the sea water and soluble extracts of ethanol were 8.9%, 51.4% and 10.2% respectively. The results of simplicia and EADP phytochemical screening showed the content of flavonoids, tannins, triterpenoids, glycosides, and alkaloids. Observations of the percentage of inflammation in the induction group had the highest percentage of inflammation compared with the other test groups at time of 300 min (p 0.05). Whereas the percentage of inflammatory inhibition of all groups of test extracts has effectiveness comparable to the comparison group. EADP group 200 mg/kg BW is the best dose of extract as anti-inflammatory, where flavonoid compounds are thought to be responsible for decreasing the volume of inflammation in the legs of test animals