Components of Food
This chapter explains the different **nutrients** present in food — **carbohydrates, proteins, fats, vitamins, and minerals**. It also talks about **balanced diet**, deficiency diseases, and the importance of healthy eating habits.
Key Topics & Instructions
▼- Identify the major components of food.
- Understand the function of each nutrient (energy, body-building, protective).
- Learn simple tests to detect nutrients in food.
- Use Experiment 1 to simulate simple chemical tests for three major nutrients (Carbs, Protein, Fat).
- Use Experiment 2 to analyze a diet for balance and identify potential deficiencies.
Experiment 1: Simulated Nutrient Test
Select a common food item and a test to check for the presence of a nutrient.
Experiment 2: Balanced Diet Analysis
Analyze a simple diet's focus to identify its primary function and potential deficiency.
Carbohydrates & Fats: Primarily provide energy (Energy-giving food). Proteins: Essential for growth and repair (Body-building food). Vitamins & Minerals: Needed in small amounts to protect the body against diseases (Protective food).
Nutrient Tests Explained
Add Iodine solution ($\text{yellow-brown}$) to the sample. A positive result is a color change to **blue-black**.
Add Copper Sulfate ($\text{blue}$) and Caustic Soda ($\text{NaOH}$). A positive result is a color change to **violet (purple)**.
Rub the food on a piece of paper. A positive result is a **translucent, greasy patch** remaining after drying.
