Carboxylic acid

2.1 Test materials: The essential oils of Curcuma longa (Zingiberaceae) rhizomes, Pogostemon heyneanus (Lamiaceae) leaves and Zanthoxylum limonella (Rutaceae) fruits were obtained from a commercial oil extraction plant in Assam, India. DMP was supplied by High Purity chemicals, New Delhi, India while DEPA was obtained from Defence Research and Development Establishment, Gwalior, India. Four concentrations (5, 10, 20 and 30%) of the essential oils, their mixtures, DEPA and DMP were prepared in…

Purpose: The purpose of this laboratory was to synthesize isopentyl acetate, commonly known as banana oil, in a reaction of methanol and isopentyl alcohol catalyzed by sulfuric acid. Through this Fischer esterification reaction, it was possible to learn about using a Reflux condenser to run a reaction as well as purifying the product through various washes and extractions along with simple distillation. In addition, the product of the experiment was carefully analyzed based upon boiling point,…

salicylic acid into a form that would provide the same medical benefits without the side effects. In 1852, Charles Gerhart was the first to attempt to acetylate the hydroxyl group thus creating acetylsalicylic acid. However the acetylsalicylic acid product…

were cut into 1-inch pieces and was heated them in 110- to 120-degree-Fahrenheit water on the stove. Peels were packed into the press and the oil was squeezed into a food container. Next is fabricating of the edible film which adds 1 tsp. of acetic acid as disinfectant, 1 tsp. of banana peel starch, with a constant amount of glycerol (1 tsp.) and 1 tsp. of orange peel essential oil. The method was repeated for three times but with different amount of starch, the second was 2 tsp., the third was…

27012016 EXPERIMENT 7: Cannizzaro reaction and reaction of benzaldehyde with ethylene glycol Introduction: From the first experiment, the reaction of benzaldehyde and potassium hydroxide will produce two products which are benzyl alcohol and benzoic acid. We are going to look at how to get this two products separated by using their different chemical properties. For the second experiment, benzaldehyde ethylene acetal is formed when the reaction done under acidic environment. Through this…

Results and Discussions Table 1: Phytochemical analysis of turmeric and apple peels extracts Phytochemical analysis Turmeric Extracts apple peel extract Total Phenolic(mg/g)content 93.30 ±0.03 82.52±0.013 Total flavonoid content (mg/g) 43.6±0.3 33.43 ± 0.06 Tannin (mg/100 g) 91.08±0.72 77.40+0.36 Reducing power (μg/ml) 25±1.7 21±5.5 Alkaloid (mg/100 g) 0.76±0.01 13.60+0.51 The Phytochemical composition of turmeric extract and apple peel extract are illustrated in table (1). Both are rich in…

General procedure: One equivalent of spacer was coupled using 2.4 equivalents of inhibitor, 0.18 equivalents of copper sulfate, 0.36 equivalents of (+)-sodium-L-ascorbate, in a mixture of 10% H2O in DMF, 24 mL/mmol spacer. The mixture was placed in the microwave for 30 minutes at 80oC Pro6 Spacer (10) (30 mg, 0.036 mmol) and 18 (36 mg, 0.087 mmol) were dissolved in 778 µL DMF. Copper sulfate (1.62 mg, 0.006 mmol) and sodium-L- ascorbate (2.57 mg, 0.013 mmol) were dissolved in 86 µL H2O. The two…

Purpose: The experiment focused on isolating terpenes from citrus peels using supercritical carbon dioxide liquid phase. The experiment also focused to identify/ quantify organic compounds using IR and gas chromatography. Experimental: The experiment procedure can be found in the Organic Chemistry Manual in chapter 6.2 pages 6.11-6.21 and also in Appendix D: experimental records Results and Discussion: Part A: All the lemon peel date was obtained from my lab partner Irini Petros as cited in…

properties of the coting film, such as hardness, flexibility, solvent resistance and adhesion were studied and optimized. When compared with commercially available coloured polyester coating SM 3911, the flexibility, adhesion, rigidity , MEK resistance and acid-resistance of the prepared coating were found to be excellent. Bekemeier Thomas et.al, 2013 also studied effect of silicone and polyester compositions for development of heat and weather resistance coating. Silicones in the range from…

Extraction of Caffeine from Tealeaves Rosheen Villaraza, Dana Young, Dana Yu*, and Ray Zafra Department of Biological Studies, University of Santo Tomas, Manila, Philippines Abstract Experiment 3 highlights the separation of caffeine from tea leaves and using chromatography for testing its purity. Extraction is a method of separating the desired from the undesired substance in a mixture through the solubility properties of the substances. In the experimental extraction, Camellia sinensis was…