Use Pre-Harvest Treatments To Keeping Quality and Long Shelf Life of Some Date Palm Cultivars

Authors : M Hafez OMAIMA, M A MAKSOUD, S Zaied NAGWA, A Saleh MALAKA

Pages : 65-74

View : 21 | Download : 24

Publication Date : 2011-04-25

Article Type : Research Paper

Abstract :This study was carried out on three date palm cultivars insert ignore into journalissuearticles values(Samany, Amhat and Sewy); grown in Abo-Rawash area Giza Governorate, Egypt. This work aimed to study the influence of pre-harvest treatments as direct spray on fruits by solu-tions boron insert ignore into journalissuearticles values(0.5% in the form of boric acid); and calcium insert ignore into journalissuearticles values(10 g/L insert ignore into journalissuearticles values(w/v); in the form of calcium nitrate); alone or in combi-nation to improve quality of date palm fruits during cold storage and increasing marketing period insert ignore into journalissuearticles values(Shelf life);. Fruits were picked in maturity stage and stored at 0.0 ± 1○ C and 85 – 90% relative humidity insert ignore into journalissuearticles values(RH);. Fruit quality characteris-tics i.e. weight loss, decay %, fruit firmness insert ignore into journalissuearticles values(Lb\\inch2);, total soluble solid percentage insert ignore into journalissuearticles values(TSS %);, total acidity percentage insert ignore into journalissuearticles values(TA %);, total soluble sugars and tannins % were evaluated. Assay of the stored fruits was made at 20 days intervals and additional fruits were left at room temperature insert ignore into journalissuearticles values(20± 2○ C); for one week as stimulated marketing period. The results showed that all spraying treatments gave the best effect in fruit quality assessments when compared with control. The combined treatment gave the highest value of fruit TSS% and total soluble sugars while decreasing TA% weight loss % and fruit decay % during cold storage for 40 days. Furthermore, the same trend was observed after cold storage for week on 20± 2○ C. It can be recommended spraying date palm fruits twice with the combined treatment of 0.5% boric acid + 10 g/L insert ignore into journalissuearticles values(w/v); calcium nitrate to improve fruit quality during cold storage and shelf life period.
Keywords : Hurma ağacı, Hasatöncesi, Kalsiyum nitrat, Borik asit, Depolama, Meyve kalitesi