antibacterial and antifungal activity was subjected against clinically four bacterial strains and two fungal strains using agar well diffusion method and test tube dilution method respectively. The GC-MS study revealed the presence of ten compounds in n-hexane extract namely Hexadecane(1)‚ 2-[4a‚ 8-Dimethyl-3‚4‚4a‚5‚6-hexahydro-napthalene-2-yl]-prop-2-en-1-ol(2)‚ Heptadecane(3)‚ Benzene‚ [1-butylheptyl]-(4)‚ Benzene‚ [1-methyldecyl]-(5)‚ Oxirane‚ tetradecyl-(6)‚ Hexadecanoic acid‚ methyl ester(7)‚ Hexadecanoic
Premium Ion Oxygen Molecule
handout "Organic Chemistry Experiment -- Hydrocarbons" Hazards: Open flame and hydrocarbons are flammable. Equations: 1. . 3. . 4. . 5. . Unknown #: 1B s-6 Hyd-3 (colorless liquid) Data/Observations: Test Bromine addition Alkane Mixture of hexane and dichloromethane was originally clear liquid. After adding 3 drops red color Br2/CH2Cl 2 the solution turned orange. Orange color held. Alkene Alkene used was pentene. Originally clear liquid. After addition‚ solution turned yellowish at first
Premium Alkene Hydrocarbon Chemistry
protein from the subcellular organelles. This step is also known as homogenization. This step can be done with the use of blender. As the solution was homogenized‚ it may undergo saltation or acidation to remove impurities such as calcium anions. Hexane may also be used to defat the protein. Lastly‚ the solution undergoes differential centrifugation. This will separate the protein crude from the liquid. (Campbell) After protein purification‚ the crude now undergoes characterization. Activity assay
Premium Protein Coomassie Enzyme
far to achieve accurate results. (7) In choosing a TLC solvent‚ a student found that a 50:50 hexane : acetone and 65:35 hexane : acetone give similar results. Which one should they use for their TLC plate development? Why? They should use hexane for their TLC plate development because you want to use the least polar solvent possible to achieve good results‚ and acetone is more polar than hexane. (8) Calculate the Rf values for compounds A‚ B and C below. (9) If a TLC plate shows only
Premium Chromatography Thin layer chromatography Chemistry
ions | SO42- | CO32- | C2O42- | IO32- | Mg2+ | S | I | S | S | Ca2+ | I | S | S | I | Sr2+ | S | S | S | I | Ba2+ | I | I | I | S | Key: I- insoluble‚ S-soluble Table II: Color of water (Halide) and Halogen (Hexane) layers | Cl2 | Br2 | I2 | Hexane layer | Clear | orange | Pink | Water layer | Clear‚ colorless | Light gold | Light yellow | Table III: Reactivity of Halogen/Halide Combinations | Cl- | Br- | I- | Cl2 | X | R | R | Br2 | NR | X | R | I2 | NR |
Premium Periodic table Chlorine Chemistry
alternative to synthetic adhesives and reduce waste simultaneously. Scope and Limitations of the Study Only pili nut shells and pulp shall be used in the experiment. The shell and pulp extracts shall be obtained through Soxhlet extraction using Hexane (C6H14) as the solvent. After which‚ the resulting extracts shall be separated from the solvent through distillation‚ separately. The obtained pili nut shell extract and pulp extract shall then be tested in 30%‚ 50% and 70% concentrations. The
Premium
A miser is ever in want. --Greek proverb Preparing to experiment You will be provided with the following materials: Redox Reactions Reactions involving oxidation and reduction processes are very important in our everyday world. They make batteries work and cause metals to corrode (or help to prevent their corrosion). They enable us to obtain heat by burning fuels--in factories and in our bodies. Many redox reactions are complex. However‚ combustion and synthesis (from elements) are
Premium Chlorine Hydrogen Bromine
which causes the frequency to be low. This further validates how mass and frequency are inversely proportional. Bond order is also related to frequency. The stronger the bond the higher the frequency. This was shown through the bond of hexane‚ hexene and hexane. Hexane only has single bonds between C-C and the frequency came out to be the lowest for all three molecules. As the bond strength increase to C=C the frequency also increase to to 1641 cm/1. The triple bond of C and C was even higher with a
Premium Force Test method Chemistry
Lab# 3 – Simple and Fractional Distillation Written by: Theressa Payne Partner: Jennifer Jantzi Performed: February 4‚2013 for CHEM 7005 John Birtwell February 6‚ 2013 Lab # 3 – Simple and Fractional Distillation Introduction: One of the most important tasks in chemistry is the separation of organic compounds which are not usually found in pure form naturally or as products of chemical synthesis. Distillation is a common method for purifying liquids based upon their boiling
Premium Distillation Evaporation Boiling point
Solubility and Functional Groups _______________________________________________________ You will recall from general chemistry that a solution has two components: the solvent‚ which is the substance present in greater amount‚ and the solute‚ which is dissolved in the solvent. Solubility is defined as the mass (in grams) of solute dissolved in 100 g of solute at saturation. Molar solubility is defined as the amount (in moles) of solute per liter of saturated solution. The solubility of one compound
Premium Chemical polarity Solvent Solubility