Beans

Beans


Ten beans (left) were ground with 10 ml of dichloromethane and the resulting solution (center) was used in the lipid tests. A second set of ten beans was ground with 10 ml of water and the resulting solution (right) was used in the carbohydrate and protein tests.


click picture to enlarge




Lipid Tests

Grease Spot Test

Carbohydrate Tests

The Molisch Test

The Iodine/Potassium Iodide Test

Benedict's Test

Protein Tests

Biuret Test

Ninhydrin Test



Review the appearence of positive and negative tests:
Grease Spot - Halogenation - Molisch - Iodine/Potassium Iodide - Benedict's - Biuret - Ninhydrin