Enhancement of antioxidant and storability of Hollywood plum cultivar by preharvest treatments with moringa leaf extract and some nutrients

Bulletin of the National Research Centre

Thanaa Shaban Mohamed Mahmoud¹  Gehan Abd El-Malek El-Hadidy²  Fatma Korany Mohamed Shaaban² 

[1] Department of Horticultural Crops Technology, National Research Centre, Dokki, Giza, Egypt;Fruit Handling Res. Dept., Hort. Res. Inst. Agric. Res. Cen., Giza, Egypt;

关键词: Plum;    Moringa leaf extract;    Boric acid;    Chelated calcium;    Cold storage;    Phenolic;    Antioxidant activity;    Quality;   

DOI  :  10.1186/s42269-020-00384-y

来源: Springer

【 摘 要 】

BackgroundPlum fruit has a short shelf life with a rapid deterioration in quality after harvest. The main aim of this study was to evaluate the effect of preharvest treatments by moringa leaf extract (MLE), boric acid (B), and chelated calcium (Ca EDTA) on Hollywood plum fruit quality attributes bioactive compounds and antioxidant activity during cold storage. Plum trees were sprayed twice: at full bloom stage and 1 month later with T1, 5% MLE + 1% B + 2% Ca EDTA; T2, 5% MLE + 2% B + 3% Ca EDTA; T3, 10% MLE + 1% B + 2% Ca EDTA; T4, 10% MLE + 2% B + 3% Ca EDTA; and T5, water only as control. At maturity stage, fruits were harvested and stored at 0 ± 1 °C and RH 85–90% for 8 weeks.ResultsAt the end of storage, all studied treatments exhibited significantly higher sensory quality: firmness, color, soluble solid content:titratable acidity ratio, total anthocyanin content, total flavonoids content, total phenolic content, and antioxidant activity than control.ConclusionsIt could be concluded that preharvest treatment with moringa leaf extract, boric acid, and chelated calcium could be a safe and eco-friendly to improve and maintain plum quality attributes and especially their content of antioxidant compounds during cold storage periods.

【 授权许可】

CC BY