Mahshid Ghafouri et al., Journal of Food Processing and Preservation
The present research was conducted to investigate the efficacy of preharvest selenium (Se) application as foliar spraying of 0, 1, 2, and 3 mg L−1 Se at 110, 125, and 140 days after full bloom on senescence and nutritional quality of kiwifruit during storage at 1°C for 90 days.
Here, we found that 2 mg L−1 Se spraying remarkably delayed the senescence of kiwifruit by preserving ascorbic acid accumulation while enhancing superoxide dismutase, catalase, and ascorbate peroxidase enzymes activity.
In addition, promoting phenols and flavonoid accumulation and DPPH scavenging capacity in kiwifruit during postharvest cold storage could be ascribed to higher phenylalanine ammonia-lyase along with lower polyphenol oxidase enzyme activity.
By endogenous Se accumulation, kiwifruits exhibited lower electrolyte leakage and malondialdehyde accumulation demonstrating protective membrane integrity.
These findings suggest that delaying senescence while improving the antioxidant capacity of kiwifruit by Se foliar spraying could be ascribed to higher endogenous Se accumulation accompanied by enhancing ROS scavenging enzymes activity and promoting phenylpropanoid pathway activity.
Novelty impact statement
Se enrichment of fruits and vegetables by foliar spraying exhibits great benefits for human health while avoiding postharvest losses.
Preharvest Se application in the present study significantly increased the antioxidant capacity and endogenous Se accumulation and delayed senescence of kiwifruit during cold storage.
The results suggest that the preharvest 2 mg L−1 Se spraying may be a beneficial strategy for supplying kiwifruit with higher bioactive molecules accumulation which is crucial for consumer health.
Delaying postharvest senescence and improving antioxidant capacity of kiwifruits cv. Hayward by preharvest selenium application
Mahshid Ghafouri, Farhang Razavi,Masoud Arghavani & Ebrahim Abedi Gheshlaghi
Journal of Food Processing and Preservation
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