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Pigments and colour changes

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Are you curious about why some vegetables and fruits change color while cooking? The answer lies in the pigments present in these foods. Understanding pigments and color changes can help you cook healthier, tastier and more visually appealing meals. In this blog, we will discuss the pigments responsible for color changes in vegetables and fruits, how to cook them to retain their color and nutrients, and some tips to enhance the visual appeal of your dishes.

Pigments and their Role in Color Changes

Pigments are responsible for the vibrant colors of fruits and vegetables. They are essential for plant growth and health, and they also provide numerous health benefits for humans. The three primary pigments found in fruits and vegetables are chlorophyll, carotenoids, and anthocyanins.

Chlorophyll

Chlorophyll is the pigment responsible for the green color in plants. When vegetables are cooked, chlorophyll can break down and lose its color, resulting in a dull or brownish appearance. To preserve the green color, it is essential to cook vegetables quickly and not overcook them. Adding a small amount of baking soda to the cooking water can also help to preserve the green color by neutralizing acids that can break down the chlorophyll.

Carotenoids

Carotenoids are the pigments responsible for the orange, yellow, and red colors in fruits and vegetables. These pigments are also antioxidants, which protect the body from damage caused by free radicals. When vegetables are cooked, carotenoids can become more available for absorption, making them even more nutritious. However, overcooking can cause the color to fade, and some carotenoids, such as beta-carotene, can be destroyed by heat. To preserve the color and nutrients of carotenoid-rich vegetables, it is essential to cook them quickly and not overcook them.

Anthocyanins

Anthocyanins are the pigments responsible for the red, purple, and blue colors in fruits and vegetables. These pigments are also antioxidants and have anti-inflammatory properties. When fruits and vegetables are cooked, anthocyanins can break down, resulting in a loss of color. To preserve the color, it is important to cook these foods quickly and not overcook them. Adding a small amount of acid, such as lemon juice, to the cooking water can also help to preserve the color by stabilizing the pigment.

Tips for Cooking and Serving Colorful Vegetables and Fruits

Now that you understand the role of pigments in color changes, here are some tips to help you cook and serve colorful vegetables and fruits:

  • Cook vegetables and fruits quickly to preserve their color and nutrients.
  • Avoid overcooking, which can cause the color to fade and nutrients to be lost.
  • Add a small amount of baking soda to the cooking water for green vegetables to help preserve their color.
  • Add a small amount of acid, such as lemon juice, to the cooking water for red, purple, and blue fruits and vegetables to help preserve their color.
  • Use a variety of colorful fruits and vegetables to add visual appeal to your dishes.
  • Cut fruits and vegetables into different shapes and sizes to add visual interest.
  • Use contrasting colors to create visually appealing dishes.

Conclusion

Cooking colorful vegetables and fruits can be a fun and healthy way to add visual appeal to your meals. Understanding the pigments responsible for color changes and how to cook them properly can help you retain their color and nutrients. By following the tips outlined in this blog, you can create beautiful and nutritious dishes that are as visually appealing as they are delicious.

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Syllabus BHM111 (T)

01. Introduction to cookery

  1. Levels of skills and experiences
  2. Attitudes and behaviour in the kitchen
  3. Personal hygiene
  4. Uniforms & protective clothing
  5. Safety procedure in handling equipment

02. Culinary history

  1. Origin of modern cookery

03. Hierarchy area of department and kitchen

  1. Classical Brigade
  2. Modern staffing in various category hotels
  3. Roles of executive chef
  4. Duties and responsibilities of various chefs
  5. Co-operation with other departments

04 Culinary terms

  1. List of culinary (common and basic) term
  2. Explanation with examples

05 Aims & objects of cooking food

  1. Aims and objectives of cooking food
  2. Various textures
  3. Various consistencies
  4. Techniques used in pre-preparation
  5. Techniques used in preparation

06.Basic principles of food production – I

I Vegetable and fruit cookery

  1. Introduction – classification of vegetables
  2. Pigments and colour changes
  3. Effects of heat on vegetables
  4. Cuts of vegetables
  5. Classification of fruits
  6. Uses of fruit in cookery
  7. Salads and salad dressings

II Stocks

  1. Definition of stock
  2. Types of stock
  3. Preparation of stock
  4. Recipes
  5. Storage of stocks
  6. Uses of stocks
  7. Care and precautions

III Sauces

  1. Classification of sauces
  2. Recipes for mother sauces
  3. Storage & precautions

07 Methods of cooking food

  1. Roasting
  2. Grilling
  3. Frying
  4. Baking
  5. Broiling
  6. Poaching
  7. Boiling
  • Principles of each of the above
  • Care and precautions to be taken
  • Selection of food for each type of cooking

08. Soups

  1. Classification with examples
  2. Basic recipes of Consommé with 10 Garnishes

09 Egg cookery

  1. Introduction to egg cookery
  2. Structure of an egg
  3. Selection of egg
  4. Uses of egg in cookery

10 Commodities

I Shortenings (Fats & Oils)

  1. Role of Shortenings
  2. Varieties of Shortenings
  3. Advantages and Disadvantages of using various Shortenings
  4. Fats & Oil – Types, varieties

II Raising Agents

  1. Classification of Raising Agents
  2. Role of Raising Agents
  3. Actions and Reactions

III Thickening Agents

  1. Classification of thickening agents
  2. Role of Thickening agents

IV Sugar

  1. Importance of Sugar
  2. Types of Sugar
  3. Cooking of Sugar