What are some alternative materials to aluminum that can be used for food packaging?

Alternative materials to aluminum for food packaging include biodegradable plastics such as PLA (Polylactic Acid), paper-based materials, glass, and stainless steel. Biodegradable plastics are derived from renewable resources and break down over time. Paper-based materials are sustainable and can be recycled. Glass is a non-porous material that is excellent for preserving food quality and is also recyclable. Stainless steel is durable, reusable, and does not react with food, making it a popular choice for reusable containers. Each material has its own set of advantages and disadvantages, and the choice depends on factors like food type, shelf life, and environmental impact.