EFFECT OF VARYING CONCENTRATIONS OF OXYGEN WITH AND WITHOUT CO₂ ON SENESCENT CHANGES IN STORED McINTOSH APPLES GROWN UNDER TWO LEVELS OF NITROGEN FERTILIZATION

Abstract

Mclntosh apples from trees having a high and low content of N as deternrined by leaf analysis were storcd in modified atmospheres of zero, 5, or 77" CO, in a range of O, levels from 2.5 to 20'/1. Fn-rit

Responses of ‘McIntosh’ Apples to Low Oxygen Storage1

“…This suggests that low 0 2 storage of 'McIntosh' may maintain fruit quality of apples and prolong the expected shelf life. Higher titratable acid and firmness retention should reflect longer storage life as the loss of firmness and acid effectively limits the storage life of apples in conventional CA (3,8).…”

Storage Procedures, Low Oxygen, and Low Carbon Dioxide Atmospheres on Storage Quality of ‘Golden Delicious’ and ‘Delicious’ Apples

“…However, reduction of storage C 0 2 did lead to a decrease in flesh firmness in 'Golden Delicious' apples stored in 2.5% 0 2 and to a lesser extent in 1.0% 0 2 (Table 3). Fruit softening and increased storage disorders have been found prevalent in apples kept as suboptimal C 0 2 levels in 2% to 3% 0 2 (3,5,6,7,14,17,19), but minimal in 1.0% to 1.5% 0 2 (5,14,17).…”