Bring some colour to your package: Freshness indicators based on anthocyanin extracts
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Becerril, R.; Nerín, C.; Silva, F. Bring some colour to your package: Freshness indicators based on anthocyanin extracts. Trends Food Sci. Technol. 2021, 111, 495–505.
URL:
https://www.sciencedirect.com/science/article/pii/S0924224421001497