Hydrocolloids Carrageen" and "Algin" are obtained from__________ and ___________respectively

Options

A. Gelidium (red alga), Macrocystis pyrifera (brown alga)
B. Chondrus crispus (brown alga), Gelidium (red alga)
C. Chondrus crispus (red alga), Macrocystis pyrifera (brown alga)
D. Macrocystis pyrifera (red alga), Gracilaria (red alga)

Answer

To answer the question regarding the sources of the hydrocolloids "Carrageen" and "Algin," we can follow these steps:

### Step-by-Step Solution:

1. **Identify Carrageen**:
- Carrageen is a hydrocolloid that serves as a thickening agent and is primarily used in food products.

2. **Determine the Source of Carrageen**:
- Carrageen is obtained from a specific type of algae known as brown algae. The scientific name of the brown algae from which carrageen is derived is **Chondrus crispus**.

3. **Identify Algin**:
- Algin, also known as alginate, is another hydrocolloid that has various applications, including medicinal uses and as a thickening agent.

4. **Determine the Source of Algin**:
- Algin is extracted from another type of brown algae called **Macrocystis pyrifera**.

5. **Conclude the Answer**:
- Therefore, the correct answer to the question is that Carrageen is obtained from **Chondrus crispus** and Algin is obtained from **Macrocystis pyrifera**.

### Final Answer:
Carrageen is obtained from **Chondrus crispus** and Algin is obtained from **Macrocystis pyrifera**.

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