Of 133 Corynebacterium diphtheriae isolates from diphtheria patients in Jakarta, Indonesia, 86% were resistant to greater than or equal to 32 micrograms of tetracycline per ml. All isolates were sensitive to ampicillin, cephalothin, chloramphenicol, clindamycin, penicillin, erythromycin, and kanamycin. The general resistance of C. diphtheriae to tetracycline in this part of Indonesia appears to be unique compared with resistance reported in studies done in other parts of the world.
Plant Lime (Citrus aurantifolia) and Plant Kaffir Lime (Citrus hystrix) including Rutacea family. Part of the plant lemon and lime are used as a drug other than fruit and leaves that can be used as medicine. This study aims to determine the antibacterial activity infuse lime leaves and lime leaves. Examination of the characteristics simplicia macroscopic examination. Phytochemical screening of compounds includes examining alkaloids, flavonoids, tannins and infuse saponin. Ekstrak conducted using distilled water solvent. Test of antibacterial activity against Escherichia coli bacteria carried by the agar diffusion method using a paper disc. Results obtained from macroscopic examination for lime leaves are fresh leaves leaf-shaped single smooth surface and the lower surface of the leaves are light green, the dark green upper surface. If torn, lime leaves produce coarse fibers. The leaves are small with a width of 3-5 cm. For lime leaves are fresh leaves, leaf litter pinnate compound leaves one. Child leaf blade oval to oblong, base rounded or blunt, the blunt end up pointed, 8-15 cm long, 2-6 cm wide, the upper surface colour some what shiny dark green, light green below the surface. Results of phytochemical screening simplicia powder lime leaves and lime leaves that contain a class of alkaloids, flavonoids and tannins. Antibacterial activity test results showed that there were differences between the antibacterial infusion lime leaves and lime leaves kaffir lime leaves which are more effective against the bacteria Escherichia coli compared kaffir lime leaves.
The Phytochemical screening test to identify secondary metabolites of Saputangan leaves extract (Maniltoa grandiflora (A.Gray) Scheff) showed positive results on phenolic and terpenoid compounds. The reagent used for phenolic screening was 5% FeCl3 and reagent for screening terpenoid was 1% CeSO4 in 10% H2SO4. Antibacterial test was carried out by agar diffusion method on extracts of DMSO Saputangan leaves. Phenolic compound obtained from extract of Saputangan leaves were 36.96 gram where the result was obtained after maceration, partitioning and evaporation processes. Antibacterial of phenolic compound was observed based on inhibitory zone diameters of phenolic compounds formed using paper discs with a diameter of 6 mm. The diameters of the inhibition zone against Escherichia coli bacteria are 8.1; 8.5 and 9.7 mm larger than the diameter of the inhibition zone in Staphylococcus aureus bacteria at 7.3; 7.8 and 8.5 mm. Then it can be stated that DMSO extracts of phenolic compound with concentrations (0.25; 0.50 and 1.00 mg / ml) have antibacterial strength at the medium level where the average inhibition zone of S. aureus bacteria is 7.87 mm and the average inhibition zone in E. coli bacteria is 8.76 mm.
Escherichia coli O157: H7 is the main cause of foodborne disease in several countries, one of which is diarrhea. Diarrheal disease is still a major problem in Indonesia that needs treatment and study from various aspects. The conventional method of laboratory examination such as culture is a method that is often carried out, but in making the diagnosis requires a long time, the number of samples is large, and the results are less accurate because contamination can occur. Another more accurate technique for detecting Escherichia coli O157: H7 is the PCR technique. This study aims to identify the Escherichia coli O157: H7 bacteria by culture method and PCR. The results showed that the culture method and PCR of 8 isolated samples 4 showed positive results for the bacterium Escherichia coli O157: H7. However, the PCR method is more selective and faster than the culture method.
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