From Day 6 to Day 10, the total phenolic content of strawberry in pure PLA packaging film and nano-Ag active packaging film showed a decreasing trend, but the total phenol content of nano-Ag active packaging film was higher than that of pure nano-Ag packaging film.
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The Quality Evaluation of Postharvest Strawberries Stored in Nano-Ag Packages at Refrigeration Temperature.
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The sentences
In Figure 9 , the DPPH radical scavenging rates of the packaging films of strawberry during the whole storage period showed a trend of increasing first and then decreasing.