Open AccessEXTENDING THE KHALAL STAGE OF “ZAGHLOUL” DATES BY UTILIZING THE MODIFIED PACKING METHOD AND ANTIETHYLENE COMPOUNDS
Author(s) -
Karim M. Farag,
; Neven,
Melinda Nagy,
; Naglaa,
Mustafa Yassin,
; Amr,
Muhammad Haikal,
Sherien Sobhy
Publication year - 2020
Publication title -
the future of agriculture
Language(s) - English
Resource type - Journals
eISSN - 2687-8216
pISSN - 2687-8151
DOI - 10.37229/fsa.fja.2020.01.23
Subject(s) - relative humidity , putrescine , chemistry , glycerol , horticulture , postharvest , zoology , food science , biology , biochemistry , physics , thermodynamics , enzyme
The present study was conducted in order to increase the availability of "Zaghloul" dates favoredfor consumption at the khalal stage. During the two successive seasons 2017 and 2018, dipping postharvesttreatments and the modified packing method were applied to extend the khalal stage of "Zaghloul" date palmfruits. The treatments included the control (water), the control with wood shavings, CaCl2 (2%, w/v), glycerol (1%, v/v), CaCl2 plus glycerol, AVG (50 ppm), putrescine (2mM) and AVG followed by putrescine, then, thetreated fruits with the substances treatments were embedded in layers of the wood shavings. All packed datesstored under cold storage conditions (4oC and 90 -95 % relative humidity). The results revealed that alltreatments were able to reduce weight loss, fruit decay, electrolyte leakage, total soluble solids percentages andrutab score. More drastic reduction in these characteristics was found with the application of AVG whenfollowed by putrescine in the presence of wood shavings. While, there was no clear trend for treatments effecton fruit total acidity content. Treated dates with CaCl2 or AVG when followed by putrescine had the highestvalues of total sugars. On the contrary, anthocyanin content in dates peel slightly increased by differenttreatments. This study provided evidence about the feasibility of using the combination of AVG with putrescineor CaCl2 plus glycerol in the presence of wood shavings to extend the khalal stage of "Zaghloul" dates andmaintain their quality on a large scale.