Jurnal Natural
Not a member yet
304 research outputs found
Sort by
Antithrombotic potential of ethanol extract from Gardenia jasminoides leaves planted in Aceh
Therapheutic agents from plants are believed to be effective, sustainable and readily available which stimulate researchers to explore various activities of plants. This study is aimed to investigate the activity of Gardenia jasminoides (G. jasminoidesleaves in enhancing the length of bleeding time and clotting time thus can be optimized to be a potential thrombolytic agent in the future. The animal were classified into 5 groups included 3 treatment groups receiving G. jasminoides leaves (GJL) extract at dose 100, 200, 300 mg/kg BW, 1 positive control receiving aspirin 0.208 mg/20 g and 1 negative control. Mice treated with GJL extract delayed the clot formation with the highest dose showed effects as strong as positive control
Some additional records to the inventory of dragonflies and damselflies (Odonata) in Andalas Universitys Limau Manis campus complex, Padang, West Sumatra
Since the publication of inventory list for dragonflies and damselflies within the boundary of Andalas Universitys Limau Manis Campus Complex, Padang, on 2018, the survey efforts have been continuously conducted. Hence, in this article we add five odonate species new for Andalas Universitys Limau Manis Campus Complex, with one species Drepanosticta cf. bispina may require further investigation and elaboration on its existence in West Sumatra. We also corrected the identification of Heliocypha fenestrata into H. angusta angusta. With this addition, Andalas Universitys Limau Manis Campus Complex currently resides for 32 species and 9 families of Odonata, increasing from previously 27 species and 8 families
Application of gravity method in cultural harritage Cot Sidi Abdullah Site, Samudera Pasai, North Aceh
The gravity method was applied to the cultural heritage site of Cot Sidi Abdullah in Kuta Krueng Village, Samudera Pasai District, North Aceh Regency for mapping and reconstruction structure of the cultural heritage site and distribution of artifact objects buried in the subsurface. Data measurement was carried out in a grid with 2 meters spacing between the points to cover all area of the cultural heritage site. The model of gravity anomaly distribution from the vertical derivative results shows a square pattern of anomaly gravity surrounding the measurement areas. This anomaly pattern is thought as a response from the remaining walls of the site structure which are buried in the subsurface with anomalous values between 0.02 mGal/m - 0.08 mGal/m. The estimation of the walls of the archaeological site from the anomalous response to this gravity value is proved by the excavation results in the southern part of the study area. While the minimum value of the vertical derivative filter (-0.06 mGal/m to - 0.01 mGal/m) is the response from the area around the archaeological site. The reconstruction results of the site based on the estimation of the walls with a length of 45 meters and a width of 40 meters
The performance of beeswax coating containing vegetable oil-based lecithin as an emulsifier on weight loss and shelf life estimation of mango
Fruits are one of the agricultural commodities grown in Indonesia and mango constitutes the third largest. One of the disadvantages in transporting mangoes to long distant markets is the short shelf life when fruits are stored at the room temperature. Some efforts to maintain quality and freshness have been coating the fruits with natural wax/beeswax. This study aimed to determine the effects of beeswax coating containing vegetable oil-based lecithin on physical and weight loss in mango, as well as estimate the shelf life using the Accelerated Shelf-Life Testing (ASLT) method. The coating formulation consisted of beeswax, triethanolamine, stearic acid, vegetable lecithin (soybean: rice bran), and water. Mango coated with beeswax coating with a concentration of vegetable lecithin emulsifier were varied at 0.25, 0.5, 0.75, 1%, and control (without beeswax coating) stored at room temperature 301oK and cooler temperature 286oK. Samples were monitored for five weeks and evaluated periodically for physical change and weight loss. Beeswax coated mango exhibited slower rate of ripening than the control stored in both room and cooler temperatures. The lowest total weight loss of mangoes at both temperatures for 5 weeks with beeswax coating at 0.25% vegetable lecithin emulsifier was 7.25%. The estimation of shelf life using ASLT method and Arrheinus model to mango fruit coated with beeswax coating at 0.25% vegetable lecithin concentration as emulsifier was 36.91 days
Isolation and characterization of cellulose from rice husk waste and sawdust with chemical method
Cellulose had been isolated from rice husk waste and sawdust with chemical method through hydrolysis with HCl 2.5 N and bleaching process with H2O23%.The yields were 13,45% and 22,75% (w/w) of cellulose from rice husk waste and sawdust, respectively. The chemical treatment caused partial removal of lignin and hemicellulose from raw material showed by FTIR spectrum. Structure and morphology of cellulose from rice husk waste and sawdust were investigated using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The XRD patterns showed cellulose structure converted from amorphous to crystalline form after bleaching process while SEM images showed that the isolated cellulose from rice husk waste had rougher surface than cellulose from sawdust. The SEM micrograph also showed that the isolated cellulose from rice husk was in the form of aggregates
Morphology and thermal properties of polypropylene-montmorillonite nanocomposite using modified bentonite of Bener Meriah Aceh
Research on the use of modified bentonite from Bener Meriah Aceh to study the morphology and thermal properties of polypropylene-montmorillonite nanocomposite (PP-MMT) was carried out. Bentonite was isolated into nano-sized montmorillonite and modified with the addition of PP-g-MA as a compatibilizer and octadecylamine as a modifier of MMT. PP-MMT nanocomposite processing was carried out in an internal mixer at 180 oC with a time of 10 minutes, and a speed of 65 rpm. Based on the results of the TGA-DTA test, the modified bentonite from Bener Meriah Aceh with PP-g-MA and octadecylamine can improve the thermal properties of PP-MMT nanocomposite in a composition comparison of PP; PP-g-MA; MMT is 85; 10; 5. The SEM test results also showed that exfoliation and intercalation had occurred of MMT at PP-MMT nanocomposite
Potential side effects of medicine on patients with tuberculosis fixed-dose combination in dr. Pirngadi Hospital, Medan
Tuberculosis is caused by the bacterium Mycobacterium tuberculosis, which by only using a few new antibiotics, can kill the bacteria. Tuberculosis treatment has several stages, namely intensive and advanced stages. Compliance with the use of OAT is an imported factor in the success of TB treatment. The use of many drugs can cause side effects that result in patients stopping treatment when it creates the TB treatment process to fail. Improved adherence can do by using a fixed-dose combination OAT. In the intensive phase, the patient will get a fixed-dose combination containing a mixture of four antibiotics. The purpose of this study is to evaluate the potential side effects that occur during fixed-dose combination OAT treatment at an intensive stage and see the level of compliance of patients taking TB drugs. Observational sampling in TB patients was taking OAT at an acute stage by looking at side effects that arise during treatment and then analyzed using statistics and algorithm Naranjo. The results showed the most common potential side effects for fixed-dose combination OAT in the intensive stage were itching, headache and nausea with a percentage of 72% each, joint pain 45%, stomach pain 36.4%, lack of appetite and rashes 27.3% each and reddish color in the urine 18.2%. The results of the analysis using Naranjo logarithm obtained results eight, which means the side effects might cause due to the use of the drug. The results of patient compliance achieved a 100% compliance rat
The blood glucose lowering effect of Malaysian Tinospora crispa in rats
Diabetes is defined as a chronic hyperglycemia which should be countered by the effective, safe and readily available hypoglycemic agents. Herbal is among alternatives that has been used by society for years but lacks of documented evidences. Tinospora crispa (TC) is enriched by phytochemicals which potentially reduce blood glucose thus is useful for diabetic patients. This study aimed to investigate the potency of TC inreducing blood sugar and body weight. It involved 30 healthy rats divided into 5 groups namely: normal control, normal fed with TC extract, diabetic, TC-treated diabetic (dose 500 mg/kg w/w), and vitamin E-traeted diabetic rats (60 IU). The body weight and fasting blood glucose were measured each week for 1 month. The administration of TC extract 500 mg/kg (w/w) helps to maintain body weight in diabetic rats and reduce the fasting blood glucose. TC is highly potent as hypoglycemic agents therefore needed to be explored further