What would the final color be if you tested the contents of

What would the final color be if you tested the contents of this package [the dry mix] with biuret\'s reagent? Explain your answer What would the final color be if you tested the contents of this package [the dry mix] using Sudan IV stain? Explain your answer What would the final color be if you tested the contents of this package (the dry mix) using Benedict\'s reagent? Explain your answer. Does this product (the dry mix) contain starch? What on the nutrition label may indicate its presence or absence?

Solution

(9) The biuret test is a chemical test used for detecting the presence of proteins.

This package give blue/violet color, positive for biuret test

(10) When fats are present the Sudan IV will stain them reddish-orange (positive test).

(11) Benedict\'s reagent starts out aqua-blue. Since sugars are not present it will remain aqua-blue.

(12) This product does not contain starch. If present it should indicate “carbohydrates”