Now Reading: Kyushu scientists create smart film that changes colour when meat spoils
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Kyushu scientists create smart film that changes colour when meat spoils
Kyushu scientists create smart film that changes colour when meat spoils
Researchers at Kyushu University have developed a smart packaging film that turns from purple-red to yellow-green when meat begins to spoil, offering a visual freshness indicator without opening the package. The hydrogel…
The Story in Brief
Researchers at Kyushu University have developed a smart packaging film that turns from purple-red to yellow-green when meat begins to spoil, offering a visual freshness indicator without opening the package. The hydrogel film uses anthocyanin from purple sweet potatoes embedded in a metal-organic framework, which protects the pigment while allowing it to react to alkaline gases from decomposing meat. The material also self-heals, recovering 99% of its strength after being cut, and is biodegradable. The study appears in the Chemical Engineering Journal.
The Indian Opinion
Some may hype this as a revolution against food waste, but the real story is a promising lab concept still years from your kitchen. The film works by detecting pH shifts from bacterial activity via colour change, a neat trick. But questions remain: will it withstand real supply chains, cold transport, and varied humidity? The real test is not the lab result but whether it can scale cheaply and reliably. Until then, keep trusting your nose, not just a purple wrapper.
Source: timesofindia.indiatimes.com
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