Understanding Food Preservatives

The video explains how food spoilage occurs due to microbes and oxidation, and how preservatives help prevent this. It covers various preservation methods, including acids, sugar, salt, and antioxidants, and discusses their safety and potential health risks. The video also touches on alternative preservation methods and the role of the FDA in ensuring safety.

What are the two main factors that cause food to spoil?

• Microbes and oxidation

• Temperature and humidity

• Light and air

• Time and storage

How do acids help in preserving food?

• By reducing light exposure

• By increasing temperature

• By unraveling enzymes needed by microbes

• By adding flavor

Which of the following is a traditional method of food preservation?

• Using lactic acid bacteria

• Freezing

• Vacuum sealing

• Microwaving

What is a potential health concern associated with benzoates?

• They cause weight gain

• They increase blood pressure

• They cause allergies

• They contribute to hyperactive behavior

How do sugar and salt act as preservatives?

• By adding sweetness and flavor

• By changing the color of food

• By increasing the temperature

• By holding onto water needed by microbes

What is the role of antioxidant preservatives?

• To prevent chemical changes that affect flavor and color

• To enhance the nutritional value

• To increase the shelf life by freezing

• To add color to food

Which compound is known as vitamin E and acts as an antioxidant?

• Citric acid

• BHT

• Tocopherol

• Sorbic acid

What is a multitasking compound that acts as both an antimicrobial and antioxidant?

• Sulfites

• Benzoates

• Propionic acid

• Nitrates

Why are preservatives usually listed at the end of the ingredients list?

• They are the most expensive

• They are the least important

• They are used in very small amounts

• They are the most important

What is one alternative method to chemical preservatives mentioned in the video?

• Adding more sugar

• Reducing oxygen around the food

• Increasing temperature

• Using more salt