Acids in Food Preservation and Use

The video discusses the use of various acids as food additives, preservatives, antioxidants, and leavening agents. Citric and tartaric acids enhance taste and prevent microbial growth. Acetic acid in vinegar preserves foods like pickles. Sulfur dioxide is used for dried fruits. Ascorbic acid (vitamin C) acts as an antioxidant by altering pH to slow enzyme activity. Phosphoric acid is added to soft drinks for sharpness. The video concludes with a review of acids and bases in everyday and industrial applications.

Which acid is commonly used to enhance the taste of food and also acts as a preservative?

• Sulfuric acid

• Citric acid

• Hydrochloric acid

• Nitric acid

What is the primary role of fumaric acid in packaged foods?

• To sweeten the product

• To add color

• To act as a leavening agent

• To preserve freshness

Which acid is not mentioned as a leavening agent in the video?

• Fumaric acid

• Citric acid

• Phosphoric acid

• Sulfuric acid

How does acetic acid in vinegar help in food preservation?

• By enhancing color

• By increasing acidity

• By preventing microbial growth

• By adding sweetness

What is the function of sulfur dioxide when used on dried fruits?

• To increase sweetness

• To prevent microbial growth

• To add flavor

• To enhance color

Which vitamin is known for its antioxidant properties and ability to prevent spoilage?

• Vitamin B

• Vitamin A

• Vitamin D

• Vitamin C

How does vitamin C help in slowing down enzymatic reactions?

• By increasing temperature

• By altering pH

• By adding moisture

• By reducing light exposure

What is the effect of altering pH with vitamin C in food preservation?

• It speeds up enzymatic reactions

• It slows down or prevents enzymatic reactions

• It enhances the color of food

• It increases microbial growth

Which acid is added to soft drinks to increase their sharpness?

• Phosphoric acid

• Acetic acid

• Sulfuric acid

• Citric acid

What is the main topic covered in the final section of the video?

• The use of acids in medicine

• The environmental impact of acids

• The role of acids in industrial applications

• The role of acids in daily life and industry