A carbohydrate sample reacts positively with all test reagents except for Lugol's. The sample could possibly be?
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A carbohydrate sample reacts positively with all test reagents except for Lugol's. The sample could possibly be?
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- Given a BSA stock solution of 4mg/mL how would you prepare a 5 mL sample with a final concentration of 1 mg/mL?what is the practical application of milk test of aldehydes?An unknown sample was titrated with CH3COOH. After making the titration curve, no steep change was observed. This means that the unknown sample must be a _____.
- The table below summarizes the results for Hopkins-Cole test. Provide the correct remarks from the results if Negative for Hopkin's Cole test or Positive for Hopkin's Cole test and if Negative for indole group or Has the presence of indole group.REAGENTS. Match the name of the reagent with the physiological test. Tests may require more than one answer. a. alpha-naphthol b. dimethyl-alpha-naphthylamine c. ferric chloride d. Gram’s iodine e. hydrogen peroxide f. Kovac’s reagent g. methyl red h. N,N,N′,N′-tetramethyl-p-phenylenediamine dihydrochloride i. potassium hydroxide (KOH) j. sulfanilic acid 2,3-butanediol fermentation catalase test mixed-acid fermentation nitrate reduction oxidase test phenylalanine deamination starch hydrolysis tryptophan degradationWhy do we need to place the lipid samples under direct heat after adding ethanol in a solubility test?
- Is Raffinose tri-saccharide a reducing sugar? Explain the chemistry of the reducing sugar test and apply it to the tri-saccharide attached.The table below summarizes the results for Millon's test. Provide the correct remarks from the results if Negative for Millon's Test or Positive for Millon's Test and if Contains phenolic hydroxy group or Does not contains phenolic hydroxy group.In Lassaigne Nitrogen Test, If a substance is positive for nitrogen, what functional groups may the substance possess?