Effect of ascorbic acid postharvest treatment on enzymatic browning, phenolics and antioxidant capacity of stored mung bean sprouts.
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Enzymatic browning limits the postharvest life of minimally processed foods, thus the study selected the optimal inhibitors of polyphenol oxidase (PPO) and evaluated their effect on enzymatic browning, phenolics and antioxidant capacity of stored mung bean sprouts. The sprouts treated with 2 mM and 20 mM ascorbic acid had a lowered PPO activity; compared to the control by 51% and 60%, respectively. The inhibition was reflected in a significant decrease in enzymatic browning. The sprouts treated with 20 mM ascorbic acid had 22% and 23% higher phenolic content after 3 and 7 days of storage, respectively. Both storage and ascorbic acid treatment increased potential bioaccessibility of phenolics. Generally, there was no effect of the treatments on the antioxidant capacity; however, a significant increase in the reducing potential was determined for the sprouts washed with 20 mM ascorbic acid. In conclusion, ascorbic acid treatments may improve consumer quality of stored sprouts.
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Rekord utworzony: | 4 sierpnia 2017 10:10 |
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Ostatnia aktualizacja: | 18 listopada 2021 21:23 |