Four foods were tested for fat (using ethanol), protein (using the biuret test), reducing sugar (using Benedict's solution), starch (using iodine solution). Which food contains protein and starch? colour of result of food test blue/black purple/lilac brick-red/orange milky-white A key / = nutrient present X = nutrient absent O B O A OD
Four foods were tested for fat (using ethanol), protein (using the biuret test), reducing sugar (using Benedict's solution), starch (using iodine solution). Which food contains protein and starch? colour of result of food test blue/black purple/lilac brick-red/orange milky-white A key / = nutrient present X = nutrient absent O B O A OD
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:### Food Testing for Nutrients
**Topic:** Nutrition Testing in Foods
Four foods were tested for fat (using ethanol), protein (using the biuret test), reducing sugar (using Benedict’s solution), and starch (using iodine solution). The goal is to identify which food contains both protein and starch.
#### Results of Food Tests
The results are shown in the table below:
| Food | Blue/Black (Iodine) | Purple/Lilac (Biuret) | Brick-Red/Orange (Benedict’s) | Milky-White (Ethanol) |
|------|---------------------|----------------------|------------------------------|-----------------------|
| A | ✓ | ✗ | ✓ | ✗ |
| B | ✓ | ✓ | ✗ | ✗ |
| C | ✗ | ✗ | ✓ | ✓ |
| D | ✗ | ✓ | ✗ | ✓ |
**Key:**
- ✓ = Nutrient present
- ✗ = Nutrient absent
#### Question:
**Which food contains protein and starch?**
*Options:*
- A
- B
- C
- D
**Answer:** The correct food that contains both protein and starch is **B**.
This table helps in understanding the nutrient composition of different foods by showing which nutrients are present based on the colorimetric changes observed during different biochemical tests.
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