LOW OXYGEN ATMOSPHERE FOR APPLE FRUIT QUALITY IN STORAGE

A. Ilinski, V. Goudkovski
Fruit quality and control of disorders are the major merits of storage technology. Some apple varieties grown in Russia are scald susceptible and are difficult for a long-term storage. This poster discusses the effect of storage conditions on fruit quality and disorders of these varieties. Antonovka obuknovennaja, Martovskoe and Severni Sinap were harvested at commercial stages of maturity, determined by starch test and internal ethylene concentrations. Fruits were stored in conventional controlled atmosphere (2 – 3%O2, 2 – 3% CO2) and low oxygen CA (1.2 – 1.4% O2, 1.0% CO2). These atmospheres were maintained by constant flushing of experimental containers with nitrogen from membrane installation.

Table 1: Fruit quality after 250 days of storage in different conditions

Storage Scald * Firmness * Titrable acidity
Conditions    %  kg (d=8mm)  Mg malic acid/100g

Antonovka obuknovennaja

2–3%O2, 2 – 3% CO2     42.4      6.1/ 4.3 1.70/ 1.13
1.2 – 1.4% O2, 1.0% CO2       0.7      6.1/ 3.2 1.70/ 0.82
     Martovskoe

2–3%O2, 2 – 3% CO2      20.0        5.5/3.8   1.03/083
1.2 – 1.4% O2, 1.0% CO2        0.0        5.5/3.1   1.03/0.61

     Severni Sinap

2–3%O2, 2 – 3% CO2        7.0        6.0/5.1   0.83/0.61
1.2 – 1.4% O2, 1.0% CO2        0.0        6.0/4.0   0.83/0.52

* The first figure is the value at harvest, the second - after storage

Ilinski, A. and Goudkovski, V. (1998). LOW OXYGEN ATMOSPHERE FOR APPLE FRUIT QUALITY IN STORAGE. Acta Hortic. 466, 169-170
DOI: 10.17660/ActaHortic.1998.466.29
https://doi.org/10.17660/ActaHortic.1998.466.29

Acta Horticulturae