The Economics of Plastics
Packaging and Food Waste: A Trade-Off
How plastic packaging reduces food spoilage and waste, why cutting plastic can raise food losses, and how to weigh the trade-offs.
Plastic packaging has benefits.
Reducing food waste
- Plastic keeps food fresh longer.
- Shrink-wrapped cucumbers, sealed meat and packaged grains spoil less.
- Food waste also has big environmental costs: land, water and emissions.
Hygiene
Packaging protects food from contamination, important in hot climates.
Life-cycle analysis
Comparing materials requires life-cycle analysis: counting emissions and impacts from production to disposal.
- A plastic bag may have lower emissions than a paper bag used once.
- Cotton bags need to be reused many times to beat plastic on emissions.
Trade-offs
Cutting plastic without alternatives could increase food waste.
Smart policies
- Reduce unnecessary packaging.
- Improve collection and recycling.
- Design recyclable packaging.
Lesson
Environmental choices involve trade-offs, not simple good and bad.
The cotton bag
A cotton tote bag must be reused many times before its environmental footprint beats that of plastic bags, due to cotton's water and energy use.
Thinking plastic alternatives are always greener
Life-cycle analysis shows trade-offs.
Key takeaways
- Plastic packaging reduces food spoilage.
- Food waste has environmental costs.
- Life-cycle analysis compares materials fully.
- Smart policies reduce unnecessary packaging and improve recycling.
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