Showing posts with label adulterant. Show all posts
Showing posts with label adulterant. Show all posts

Thursday, October 2, 2008

DETECTION OF FOOD ADULTERATION IN SAFFRON



ADULTERANT

1. Maize fibres dried, coloured and scented.

TEST

1. Genuine saffron is tough. Spurious saffron will be brittle and break easily.

2. Genuine saffron dissolves easily in water giving the aroma of saffron. If the water extract is dried and a rod dipped in sulphuric acid is drawn across the surface, a blue colour which immediately turns purple and then reddish brown indicates pure saffron.






DETECTION OF ADULTERATION IN CLOVES, CHILLI POWDER, COFFEE AND CINNAMON

CLOVES
ADULTERANT: Essential oils may have been removed
TEST: If so, the cloves will be shrunken in appearance.
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CHILLI POWDER
ADULTERANT: Saw dust and colour may be added.
TEST: Sprinkle on the surface of a glass of water. Wood shavings float and added colour will colour the water.
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COFFEE
ADULTERANT: Chicory
TEST: Shake a small portion in cold water. Coffee will float while the chicory will sink staining the water a brownish red.
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CINNAMON
ADULTERANT: Cassia bark which resembles cinnamon in taste and odour.
TEST: Added colour may come off in water.
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