TEA

Biological Source:

  • Part of Plant: Leaf Buds 
  • Scientific Name of Species: Camellia sinensis, 
  • Family: Theaceae
CC
Caffeine, Catechin, Theaflavin, Theanine 


Caffeine 


Comments

Post a Comment

Popular posts from this blog

Image
Isolation & identification of atropine & Quinine Isolation & identification of Atropine Isolation:  Moisten the powdered bark with an aqueous solution of sodium carbonate and extract it with ether or benzene. The free alkaloids are extracted from the solvent and acidified with acetic acid. Discard the aqueous layer. Add sodium hydroxide to the organic layer to precipitate atropine sulfate. Filter, recrystallize, and purify the crystals with activated charcoal. Dissolve the atropine sulfate in dilute sulfuric acid and make it alkaline with ammonia. Atropine will precipitate as crystals. Wash and dry them at 45-55°C. Identification:  Vitali-Morin Test: Atropine + Small Amount of Con. HNO3  Evaporated to dryness in Waterbath. Residue is dissolved in 1 ml Acetone and few drops of freshly prepared Alcoholic KOH,  Observation: Violet Colour (Tropane Neuclus)  Isolation & identification of Quinine  Isolation  Here are some steps for isolating ...
Read more
Image
 General Method OF Isolation of Glycoside     Glycoside is a molecule in which a sugar (Glycone part) is attached to a Non-sugar (Aglycone) functional group via a Glycoside bond ( O/S/N/C). upon hydrolysis , glycosides are divided into a non – sugar group ( which have some pharmacological Action ) and a sugar moiety, which don’t have any pharmacological action.     Example: Anthraquinone, Coumarin, Flavonoid glycosides. Isolation  Sta-otto method  Find me powdered drag containing glycoside is extracted by successive extraction in a soxhlet apparatus with alcohol as solvent.  The thermolabile glycoside should be extracted at below 45 degree Celsius. The extract is treated with lead acetate to precipitate tannins and filtered it. To the filtrate hydrogen sulphide gas is passed, The excess of lead acetate is precipitated as lead sulphide. Pure component is determined by the spectroscopy method.
Read more
Image
 General Identification Test for ALKALOIDS  Identification Test for Quinine  Thalleoquin Test: Bromine Water and Ammonium solution is added to a small amount of Sample  Emerald Green colour confirms the presence of Quinine  Identification Test for Reserpine Sample is Treated with Vanillin in acetic acid  Violet colour confirms the presence of Reserpine.   
Read more