Giardiasis and Cryptosporidiosis
Giardiasis and Cryptosporidiosis are diseases caused by
protista Giardia intestinals and cryptosporidiam parvtan respectively. These
organisms continue to be problematic even in well regulated water supplies.
Chemical test for Tragacanth
Chemical test for Tragacanth Organoleptic test: Appearance: Crystalline tragacanth Colour: White or faint yellow tragacanth Odour: None tragacanth Taste: Mucilaginous tragacanth Solubility: Insoluble in alcohol, partially soluble in water tragacanth Chemical test: SI.No. Test Observation Inference 1. To 4ml of 0.5%w/v solution add 0.5ml of HCl and heat for 30minutes on water bath Divide the hydrolyzed product in 2 parts a) 1 st part=Add 1.5ml of NaOH solution to neutralize and add Fehling’s solution A and B in equal quantities(mixed before) and warm over water bath. b) 2 nd part= Add barium chloride solution Red ppt o
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