Tartaric acid

1.7.3.4. Hydrogen sulphid test (MacFaddine, 1980): Tubes of triple sugar iron agar media were inoculated by suspected culture through stabbing into the butt and the slant then covered with sterile melted paraffin wax and incubated anaerobically for 48 h at 37°C, appearance of blackening in the butt indicates H2S production. 1.7.3.5. Sugar fermentation test (Willis, 1977): Suspected culture was inoculated to 1% peptone water tubes containing 2% bromocresol purple and 1% quantities of the…

Tyler White CHEM151LL 13851 07/18/2017 Mole to Mole relationship and Empirical formula of a Hydrate Purpose: The purpose of this lab experiment is to determine the molar ratio between substances, and to write chemical equations. The second experiment is to determine the ratio of water in copper, and magnesium, which is obtained through burning the vapor using the Bunsen burner. Materials: Because the experiments were conducted online there wasn’t any use of materials, only digital ones, for…

carried out at three types of organic solvents for lipophilic fractions (ethyl acetate, hexane, 50% acetone in water) and four types of solvent for hydrophilic fractions (0.1M phosphate buffer pH7.4, acetone: water: acetic acid (70:29.5:0.5), 50% methanol in water, 7% acetic acid in 80% methanol). The amount between solid (sample) and liquid (organic solvents) was carried out at the ratios of 1:10, 1:15, 1:20 and 1:25 g:mL. The ultrasonication times were varied at six extraction time levels (10,…

diabetic wounds. 2. How can the alendronate and antimicrobial loaded bilayer bandage system will help in treatment of chronic diabetic wounds? The bi-layer bandage system comprises of 2 layers, the bottom layer comprises of a chitosan-Hyaluronic acid (HA) matrix containing antimicrobial agents like bacitracin and benzalkonium chloride and the top layer comprises of a chitosan matrix containing alendronate. The bottom layer will be designed in such a way that the antimicrobials get released…

Chemistry plays a vital role in everyday life even though it may not seem like it. One of these things include firearms, which exhibits chemistry throughout the whole entire process. They show chemical and physical properties ranging from the gunpowder to the actual process of firing a bullet. Gunpowder is what makes the whole reaction occur. Without the use of chemistry throughout a firearm, would make it useless and it wouldn't work. These uses of chemistry occurs so fast that you may not…

of fatty acids, amino acids that contain sulphur and nucleic acids. The amount of hydrogen ions that in the body can be regulated in many different ways: Acid base buffer systems are located in body fluids and are chemicals such as the buffer phosphate system and the protein buffer system. The function of the respiratory system is to regulate the rate and depth of breathing and helps to regulate hydrogen ion concentration. It is very essential that the body regulates body fluids. An acid is a…

Conclusion: I predicted that liquid A was glycerine due to a calculated density of 1.38 g/mL. However I was wrong the actual density of liquid A was 1.38 g/mL and the substance was actually corn syrup. Therefore the percent of error for the density of liquid is 1%. For liquid B I had predicted that its substance would be Glycerine due to the calculated density of 1.19 g/mL. I was incorrect for the density of liquid B which was actually 1.26 g/mL, but because the calculated and actual densities…

Umama abid Lab Partners: Olivia, Emily Ms. Olenick SBI4U 9/23/2017 Analysis The solution in the dialysis tube turned bluish black in color due to the transfer of iodine from the beaker to the bag which contains starch and glucose . The solution in the beaker turned brown after Benedict’s test ( table 1) . This indicates that the dialysis tubing was permeable to both glucose and iodine but not starch ( work helper, 2017) . Starch didn't pass because the solution in the beaker which…

Kinetic investigation and the Arrhenius plot The degradation of SAC in acidic, basic and oxidative mediums at different HCl (0.01, 0.05 and 0.1 M, keeping temperature 90 ºC), NaOH (0.005, 0.01 and 0.05 M, keeping temperature 40 ºC) and H2O2 (5%, 10% and 15%, keeping temperature 90 ºC) strengths was studied. Also SAC degradation was studied as a function of temperature in acidic (30, 60, 70, 90ºC and room temperature, keeping HCl strength 0.1M), basic (40, 65, 90ºC and room temperature, keeping…

polycondensation of lactic acid is the modest reaction that forms lactide simultaneously by the decomposition processes and it is not used for the large production of PLA [19-22]. Back in the days, the direct polycondensation was assumed as the reaction that produces inadequate polymers with low molecular weight. But with the development of the condensation reaction, it can produce polymers with significantly high molecular weight [23-25]. Oligomer Polycondensation The lactic acid does the…