Hassanali University of Dares Salaam P.O. BOX 35061 Tanzania kolation of Oil of Clove and Separation of Eugenol and Acetyl Eugenol . An instructive experiment for beginning chemistry undergraduates chloride‚ and hydroxamic ester tests‚ and the preparation of the henzovl derivative of eupenol. Finally‚ ir spectra of the two components are examined‚ and the information ohtained comoared with that from chemical tests. Practical Detalls Crush about 30-35 g of cloves with pestle and mortar and place
Premium Water Chemistry Essential oil
Abstract The preparation of 7.7-dichlorobicyclo [4.1.0]heptane which is also known as 7‚7-dichloronorcarane was done by reacting cyclohexene ‚ chloroform and a base( 50% aqueous sodium hydroxide) with benzyl triethylammonium chloride. The latter being a water soluble phase transfer catalyst (PTC).reaction was performed at room temperature and was distilled at atmospheric pressure. The mechanism of action of the above mentioned PTC is described in the text along with the mechanism for the addition
Premium Sodium hydroxide Chemistry Sodium
diagram. Since a three-component system offers four degrees of freedom‚ temperature and pressure are held constant. A mixture of acetic acid‚ water and chloroform was studied in this experiment. A binodal curve was constructed by means of applying turbidimetric titration. Acetic acid-water mixture was titrated with chloroform and acetic acid-chloroform was titrated with water. The acetic acid composition was pre-assigned and the composition of each of the component in the mixture was determined and
Premium Acetic acid Ethanol Solvent
pyyrole in the presence of propanoic acid. The product will undergo UV/Visible Spectrum tests to determine its lambda max. The lambda max will show us the relationship between a conjugated system and the visible spectrum. PROCEDURE: Step 1: preparation of meso-tetraphenylporphyrin (TPP) 1. Set up reflux apparatus: -Add 40 mL of propanoic acid to 100 mL RBF with boiling chips -Attach claisen head to RBF with metal clip -Attach side arm of claisen head to reflux condenser
Premium Chemical reaction Chemistry Acetic acid
ACKNOWLEDGEMENT First of all‚ we would like to say thanks to God‚ for giving me the strength and health to do this project work until it done. Not forgotten to our family for providing everything‚ such as money‚ to buy anything that are related to this project work and their advise‚ which is the most needed for this project‚ Internet‚ books‚ computers and all that as our source to complete this project. They also supported us and encouraged us to complete this task so that we will not procrastinate
Premium Solubility Ginger Essential oil
(Method 2)[12]‚ 12 g of plant material was extracted for 6 h in a Soxhlet extractor with methanol. The extract was diluted with distilled water and then partitioned against petroleum ether‚ and finally the aqueous phase was extracted with chloroform. The chloroform extract was then evaporated and the residue redissolved in methanol and filtered through 0.45 µm filter. The filtrate thus obtained constituted the test sample. In the third method (Method 3)[13]‚ 20 g of freeze dried material was extracted
Premium Ethanol Solvent Analytical chemistry
Escherichia coli and Enterococcus spp. bacterial DNA from human faecal samples: an in-house phenol/chloroform extraction‚ and two commercially available kits‚ ExtractMaster (Epicentre Biotechnologies) and UltraClean (Mo Bio Laboratories) faecal DNA extraction kits. Real-time PCR using the standard curve method was used to quantify the level of bacterial DNA extracted from ten faecal samples. The phenol/chloroform method required an additional dilution step before DNA could be amplified by real-time PCR.
Premium Polymerase chain reaction
solution in mind would usually be antidiarrheal drugs. So the researchers thought of an alternative remedy for diarrhea. In this study‚ the researchers compared the effects of Molave tree Bark to the effects of antidiarrheal drugs on diarrhea. The preparation of extract was done by crushing 10 mg. of Molave Tree bark mixed with 10 mL distilled water. The bark was strained and the extract was considered our 100% crude extract. The researchers got the 75% and 50% plant extracts by mixing 0.75 mL of 100%
Premium Tree Water Mouse
24.5‚ 43.8‚ 68.2‚ and 158.6 mg‚ respectively‚ with chloroform‚ petroleum ether‚ methanol‚ distilled water‚ and ethanol solvents. Evaluation of phytochemicals such as alkaloids‚ flavonoids‚ carbohydrates‚ glycosides‚ protein and amino acids‚ saponins‚ and triterpenoids revealed the presence of most of the constituent in polar extracts such as ethanol‚ methanol‚ and aqueous extracts compared with nonpolar extracts (petroleum ether and chloroform). However‚ flavonoids‚ proteins and amino acids‚ tannins
Premium Solvent Solvent Bacteria
Experimental Procedure and Interpretation of Data Collection and Preparation of Materials The bark of Santol (Sandoricum koetjape (Burm.f.) merr.) were collected at the researchers backyard on Rosales‚ Province of Pangasinan. The collection was done in the month of August to September 1999. The bark was collected through the used of a knife. The bark were dried under the sun. And were placed into container and tightly closed ready for expression. Preliminary Test for the Determination of Plant
Premium Acetic acid Water Brown