Vol. 5, No. 3 (2018)
Bligo fruit (Benincasa hispida Thunb) is one of medicinal plants that used to cure typhoid fever which caused by Salmonella typhi bacteria. The aim of this research is to find ont the effect of ethanol concentration as a solvent from Bligo fruit (Benincasa hispida Thunb) extracts as an antibacterial, especially to Salmonella typhi. This simplicia was being extracted with 96% ethanol, 70% ethanol, and 50% ethanol by using maceration method for 3×24 hours. The antibacterial activity test was done by diffusion of agar method to the MHA medium by obserring the resistor zone which formed from 96% ethanol, 70% ethanol and 50% ethanol. The diametres that have been obtained are 6,815 mm for 96% ethanol, 25,223 mm for 70% ethanol while for 50% ethanol there is no resisten zone can be seen. From the result canbe conclude that the best concentration of ethanol that has a great potencial as resistor to Salmonella typhi bacteria is the Bligo fruit (Benincasa hispida Thunb) extracts of 70% ethanol.
West Java is rich in essential oil-producing plants, essential oils known to be responsible for some pharmacological activities among its antioxidant and antimicrobial. This research aims to know antimicrobial, antioxidant activity and identify the components of a compound essential oil of nutmeg (Myristica fragrans Houtt.). Components chemistry identified with GC-MS (Gas Chromatography-Mass pectrometer). Antioxidant activity measured by using the DPPH method (2 2-diphenyl-1-picrylhydrazyl) at 516 λ wavelength absorbance. Antimicrobial activity determined Minimum Inhibitory Concentrations (MIC) and Minimum Bactericidal Concentrations (MBC) using microdilution method. The result of GC-MS showed the highest component on nutmeg containing 22.22% myristicin. The antioxidant test showed nutmeg had IC50 at 3,16%, essential oil showed antibacterial activity against Gram positive and Gram negative bacteria. Minimum inhibitory concentrations of essential oils range from 0.313% to 10%. The content of essential oils of nutmeg plants that grow in the area of West Java Garut can be used to overcome the problems of antioxidants and antimicrobial.
The quality control of herbal medicine should be started from the determination of the active substance at harvest time. The Raman spectrometry has been used for this propose. The aim of this study is to determine the quantification of curcumin in turmeric rhizome (Curcuma longa Linn.) using Raman spectroscopy combined with multivariate analysis of PLS-R that are expected to provide reference method for quality control in turmeric rhizome, especially for raw materials of Herbal drugs. Parameters that can be used for analysis of curcumin levels on turmeric rhizome obtained using intensity of data Raman and the data obtained from the standard method will be processed with multivariate analysis methods PLS-R. The validation value of quantification result using Raman-PLSR is seen from R2 value of 0.957, RMSEC value of 0,199 and p-value of 0.00. The study showed the developed method could be implemented on to determine the prediction quantification of raw material herbal medicine.
Xantine derivatives are known to have some pharmacological activity, such as a bronchodilator. The substitution on atoms N1 xantine can improve the activity and selectivity as a tracheaspasm. The purpose of this research was to investigate the influence of concentration sodium hydroxide in sodium acetate as solvent used on the production yield of N1-tert-butilteobromin. The result of the synthesis was isolated using chloroform and purified with the preparative thin layer chromatography. The molecule structure of N1-tert-butilteobromin was confirmed using ultraviolet and infrared spectrophotometry. The result showed that sodium hydroxide concentration could effect the results of yield. The yields of 4%, 8%, and 12% sodium hydroxide concentration were 3.7% (0.074 g), 7.2% (0.144 g), and 1.3% (0.026 g), respectively.
The aim of this research was to isolation of mucilage from gedi leaf (Abelmoschus manihot L. Medik) and characterized physicochemical properties. The isolation result was yellowish brown powder that swelling and dissolves slowly in water, but does not dissolve in ethanol, methanol, acetone and ether. The yield is 1.33%. Swelling index value 100% and viscosity 28 ± 2.65 mpas, pH 7.1. Proximate analysis showed 10.46% water content, 38.80% ash, 14.66% protein, 0.69% fat, 35.38% carbohydrate Water holding capacity (WHC) and oil holding capacity (OHC) of musilago are respectively 4.23 ± 0.18 and 0.65 ± 0.14. Viscosity, Swelling index, WHC and OHC mucilage gedi leaf may be considered as pharmaceutical excipients.