Let's address your questions one at a time.
Question 6: If you obtained a negative test result when using Sudan IV, which indicates the absence of fats (lipids), you could claim that the food product is:
- Fat-free
Sudan IV is a dye that specifically tests for the presence of lipids. A negative result suggests that there are no lipids in the food product.
Question 7: If you obtained negative test results when using Sudan IV, Iodine, and Benedict’s solution, you would be able to make claims regarding the absence of fats, starches, and sugars. The claim you could not make is:
- This food product is Calorie-free.
While negative results indicate that the food is free of these specific macronutrients, it does not guarantee that the food product is calorie-free. Other ingredients could still contribute calories.
Question 8: To calculate the Calories added by 1/2 tablespoon of fat (which is 6.5 grams), we can use the fact that fat has approximately 9 calories per gram. The calculation is as follows:
6.5 grams of fat × 9 calories/gram = 58.5 calories
Thus, the closest rounded answer would be:
- about 59 Cal
If you need further clarification or help, feel free to ask!
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