Page 15 - Phytochemistry -1 (PG404) / Clinical Pharmacy 2nd level students ( 2019 )
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Clinical pharmacy PharmD program             Third level                        Phytochemistry-1 (PG-504)


                                                II. Test    s  for Ketoses


                    (1)  Resorcinol test (Slwanoff's test):

















                   * Positive for ketoses: fructose & sucrose, however glucose may

                    give this test but after prolonged heating.

                     * Select the white crystals for better results


                       - 2    Cobalt nitrate test:




                                                                       or/     Violet color







                                                                 Violet or purple color




                    * Positive for ketoses: fructose & sucrose
                     * Glucose: -ve ?









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