ISOLATION OF GLUTEN FROM WHEAT FLOUR AND ITS COLOR REACTION IN DIFFERENT QUALITATIVE TESTS Abstract: Gluten is isolated from wheat flour by washing it with water‚ dissolving the flour’s water soluble components and therefore separating gluten from it. The isolated gluten was then used in different qualitative colour reaction tests. These tests determine what amino acids are present in a protein‚ in this case gluten. Introduction: Proteins are large biological molecules that are made up of amino
Premium Amino acid Amine
pure sample was 76%. The melting point of the pure sample was 167C - 169C. Introduction: Formulation of acetaminophen involves treating an amine with an acid anhydride to give rise to an amide. In this experiment‚ p-aminophenol‚ the amine‚ is treated with acetic anhydride to form acetaminophen‚ the amide. The crude acetaminophen was expected to be dark in color. This was due to the fact that the impurities were formed from oxidation of the starting phenol. The intensity of this was enough to
Premium Chemistry Acetic acid Experiment
Part 1. Hydrocarbon Nomenclature From International Union of Pure and Applied Chemistry (IUPAC) General Form of IUPAC Nomenclature [branching substituent(s)] Root [Suffix] Rules: 1. Identify the longest continuous chain of carbon atoms. This chain determines the parent name (root) of the alkane. The parent suffix for alkanes is‚ not surprisingly‚ -ane. For chains of equal length‚ pick the one with the most substituents. (Note: I number all possibilities going from left to right
Premium Functional groups Functional group Alcohol
test alkenes and alkynes brown color disappears Dinitrophenylhydrazine test aldehydes and ketones yellow to orange red precipitate Ferrox test any functional group containing oxygen reddish-purple color Hydroxamate test amides and esters red-purple color appears Iodoform test methyl ketones yellow precipitate Iron hydroxide test nitro groups red-brown precipitate Jones test 1o and 2o alcohols orange reagent turns blue-green Lucas test
Premium Alcohol Aldehyde Carboxylic acid
alkenes and alkanes is the acidity of the hydrogen bonded to a triply bonded carbon the pKa of acetylene is approximately 25‚ which makes it a stronger acid than ammonia but weaker than alcohols Acidity Acetylene reacts with sodium amide to form sodium acetylide – HC CH + pK a 25 S tronger acid NH2 S tronger base HC C- + Weaker base N H3 pK a 38 Weaker acid It can also be converted to its metal salt by reaction with sodium hydride or lithium diisopropylamide
Premium Alkene Functional groups
Polymeric Biomaterials (Mingyu Li z3369978) The use of polymers in biomedical applications is now widely accepted and they are termed with the generic name of polymeric biomaterials. A biomaterial can be defined by their function as a material in contact with living tissue that used to the treatment of disease or injury‚ and to improve human health by restoring the function of tissue and organs in the body.x Polymeric biomaterials in medicine include surgical sutures‚ drug delivery vectors‚ orthopedic
Premium Polymer
6.1 ABSTRACT The densities (ρ) and viscosity (η) were reported for binary mixtures of N-methylformamide with O-substituted aniline (2-chloroaniline‚ 2-methylaniline and 2-methoxyaniline) over the entire composition range from 303.15 K to 318.15 K and at atmospheric pressure 0.1 MPa. These experimental data have been used to calculate excess volume (VE)‚ deviation in viscosity (∆η) and excess Gibbs energy of activation of viscous flow (G*E). The variations in these properties with composition for
Premium Chemistry Liquid Water
Spectra Analysis Organic Chemistry Lab‚ CHEM 369 The University of Tennessee‚ Knoxville Dr. Smith Spectra 1: tert-butyl cyanoacetate Molecular formula: 141/13 = 10 R 11 => C10H10+11 => C10H21 C10H21NO2 – C3H10 = C7H11NO2 DBE: 2(#C - #H/2 - #X/2 + #N + 2)/2 =2(7 – 11/2 – 0/2 + 1 + 2)/2 = 3=> 1 double bond and 1 triple bond Mass spectrum table: m/z fragment |40
Premium Oxygen Chemical bond Carbonyl
concluded. Through the analysis of IR spectrum of each unknown the structures for each unknowns were devised. An important peak for the solid unknown D was 1655.71 cm-1 (Ketone) and the peaks that were important for liquid unknown D were 1641.69 cm-1 (Amide)‚ 1126.43 cm-1 (C-N bond)‚ and 1384.20 cm-1 (C-N bond). Using the functional groups and the melting and boiling point of each unknown a list of possible identities was generated. The identity of unknown liquid D was 2‚6 dimethyl pyridine‚ and the identity
Premium Solvent Temperature Chemistry
seven carbon atoms‚ eight hydrogen atoms‚ four nitrogen atoms‚ and two oxygen atoms. Theobromine is very similar to caffeine but is ten times weaker. Caffeine has two more hydrogen atoms than theobromine. The structure of theobromine also contains two amide groups and three amine groups. Theobromine naturally occurs in cacao beans and is found in all chocolate products. It is what is toxic in chocolate to animals. Cardiac and central nervous system distress in dogs can be caused by 100-200 mg of
Premium Nitrogen Oxygen Chocolate