Sanitation Certification Practice Test

Which material should not be used for food storage containers?

1. Glass

2. Stainless steel

3. Wood

4. Copper

The correct answer is: Copper

Using copper for food storage containers is not advisable due to its reactivity with certain foods, particularly acidic items like tomatoes, vinegar, and citrus fruits. When copper comes into contact with acidic foods, it can leach into the food, potentially leading to copper toxicity when consumed in excessive amounts. This makes copper unsuitable for long-term food storage or direct food contact. In contrast, glass and stainless steel are considered safe and effective materials for food storage. Glass is non-reactive, meaning it does not leach harmful substances into food and can be easily cleaned. Stainless steel is durable, resistant to corrosion, and also non-reactive, making it ideal for various types of food storage. Wood, while not typically recommended for prolonged food contact without proper treatment, is primarily considered acceptable for certain uses, such as cutting boards or serving trays, as long as it is well-maintained and cleaned appropriately. Therefore, copper stands out as a material that poses health risks when used for food storage, while the others are safer alternatives.