Table 4. Reaction of Carbohydrates with (a) Nitric acid and ; (b) /KI Sugar solution OBSERVATIUN (a) Galactaric acid test (b) lodine test 5% galactose 5% glucose 5% maltose 5% sucrose 5% lactose 5% starch
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- Match the results to the name of the test. (+) Glucose and (-) Sucrose (+) Brain sugar and (-) Levulose (+) Agar and (+) Starch (+) Brain sugar and (-) Milk sugar (+) Sucrose and (-) Glycogen (+) Xylose and (-) Dextrose (+) Starch and (-) Gelatin (+) Levulose and (-) Beet sugar - Barfoed's Test - Mucic acid Test - Bial's Test - Seliwanoff's Test - Nylander's Test Refer to the image below and select two correct statement.Match the results to the name of the test. (+) Glucose and (-) Sucrose (+) Brain sugar and (-) Levulose (+) Agar and (+) Starch (+) Brain sugar and (-) Milk sugar (+) Sucrose and (-) Glycogen (+) Xylose and (-) Dextrose (+) Starch and (-) Gelatin (+) Levulose and (-) Beet sugar - Barfoed's Test - Mucic acid Test - Bial's Test - Seliwanoff's Test - Nylander's TestIllustrate with equation the reaction of glucose, galactose, maltose & lactose with osazone test. Sketch the crystals formed for each of the following sugars examined under the microscope.
- An unknown solution contains a single pure sugar. It gives positive results to Molisch’s and Benedict’s tests but is negative for all others. What is the sugar? Is it sucrose, lactose, or xylose? Explain your choice.Illustrate with an equation the reaction of glucose, galactose, maltose & lactose with osazone test. Sketch the crystals formed for each of the following sugars examined under the microscope. What test reagent is most sensitive in detecting sugar in the urine? What are the possible color positive results and their interpretation?What test reagent is most sensitive in detecting sugar in urine? What are the possible positive results (color) and its interpretation? What test could be used to differentiate: sucrose and lactose? Explain. glucose and starch? Explain. glucose and fructose? Explain. galactose and fructose? Explain An unknown carbohydrate gave a brick red precipitate when tested with Fehling's reagent, turned red when reacted with Seliwanoff's reagent, and quickly gave a red precipitate when reacted with Barfoed's reagent. What conclusions can be made about this carbohydrate? Illustrate with equation the reaction of glucose, galactose, maltose & lactose with osazone test. Sketch the crystals formed for each of the following sugars examined under the microscope.
- Indicate whether the following compounds is positive or negative in the Benedict’s test: 1. Sucrose hydrolysate 2. Starch hydrolysate 3. Cellulose hydrolysateWe did an experiment about carbohydrate chemistry and the prof did not elaborate on the details. She just gave the positive result and reagent. I would like to ask the following: Kindly explain the mechanism/principle of the Benedict's test that occurred with the samples (enumerated) Give the chemical equation for each. Glucose Sucrose RiboseName at least three test reactions for lipids. Briefly explain the the principle of each test and describe its positive result.
- Which of the following statements best describe testing of lactose sample?* A. Lactose will quickly (less than 3 minutes) form a thin brick red precipitate in a Barfoed's test since it is a reducing monosaccharide. B. Lactose will give positive test using phenylhydrazine test and forms a needle shaped osazone C. Lactose when reacted with nitric acid and exposing to cold water bath will form insoluble white crystals. D. Lactose when tested using Seliwanoff's test will form a red colored complex.Explain the principle behind the Anthrone test and Molisch Test. Structurally, how one will differentiate starch from glycogen? How are glycosidic linkages formed? What are the differences between the glycosidic linkages below?a. Glucose and fructose in sucroseb. Glucose units in amylose, amylopectin, glycogen, starchc. Between starch and celluloseName: Report Sheet: Proteins (page 4) Would the Ninhydrin test be reliable in determining the presence of proteins? Explain. Will any amino acid having an aromatic ring give positive Xanthoproteic test result under identical conditions? Why? Do most proteins give a positive Xanthoproteic test? Why or why not? For what chemical group is Millon's reagent a test? Write the formula and the name of the amino acid for which this reaction is a test. What chemical grouping is responsible for a positive Hopkin's-Cole Test? What element in the amino acid is detected to be present in the lead acetate test? 31 | Biochemistry