TED Talks Daily The science of making fruits and veggies last longer | Jenny Du
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Aug 20, 2025 Jenny Du, an engineer and chemist, tackles the global issue of food waste with innovative plant-based solutions. She reveals how a natural coating, inspired by fruit peels, can significantly extend the shelf life of fresh produce, including avocados, by turning mere days into weeks without compromising taste. Du discusses the environmental impact of current packaging methods and highlights successful initiatives to minimize industry waste. This inspiring talk showcases a path toward a more sustainable food system, using nature's ingenuity.
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Scale Of Food Waste Problem
- A third of all food and half of fresh fruits and vegetables are lost or wasted before being eaten.
- This waste squanders land, water, fertilizers, labor, energy and drives large greenhouse gas emissions.
Limits Of Current Preservation Methods
- Current post-harvest solutions like refrigeration, pesticides, waxes and plastics carry major environmental and access trade-offs.
- These methods narrow available produce varieties and increase emissions and pollution.
Reinforce Instead Of Replace
- Reinforcing a fruit or vegetable's natural peel with edible plant-derived materials extends shelf life without introducing foreign plastics or heavy energy use.
- This approach leverages universal plant chemistry instead of relying on refrigeration or synthetic coatings.