Scientific journal NRU ITMO
Series "Processes and Food Production Equipment"
Registration certificate ЭЛ № ФС 77 – 55245 от 04.09.2013
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ISSN:2310-1164

Июнь 2015 (published: 29.05.2015)

Number 2(24)

Home > Issue > Effect ofcontrolled atmosphereon thephysiological andbiochemical processesand indicators of quality apples atrefrigeration storage

UDC 664.037

Effect ofcontrolled atmosphereon thephysiological andbiochemical processesand indicators of quality apples atrefrigeration storage

Kolodyaznaya V.S., Danina M.M. , Koidov Sh.M.

To regulate the gas composition in the cells cold storage plant products, including apples, domestic and foreign researchers proposed different gas selectivity of the membrane-based tissue and polymer materials. They differ in the coefficients of variation, permeability and selectivity stability. In this article for storage of various apple varieties used new composite membrane consisting of a substrate on the basis of the track membranes of polyethylene terephthalate and selective layer based on organosilicon block copolymer. Kinetic changes depending on the intensity of respiration, amounts of organic acids, mono- and di-saccharides and ascorbic acid on the duration of storage of different varieties of apples in a controlled atmosphere(СА). Regression equations describing these relationships. The rate constants of the pseudo first order reactions of oxidation of mono- and disaccharides, organicacidsand ascorbic acid. It is shown that the storage of apples in the spacecraft slowed physiological and biochemical processes, the most biologically active substances are stored. The advantages of cold storage of apples spacecraft produced composite gas selectivity through the membrane area (22 ±2) cm2/kg, consisting of a substrate on the basis of the track membrane made of polyethylene terephthalate and a selective layer based on organosilicon block copolymer concentration of 2.2% witha pore diameterd=0.6mkm.
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Keywords: controlled atmosphere, track membrane, apples, cold storage, physiological and biochemical processes, quality.

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