Shelf Life Determination of Fresh Blueberries (Vaccinium corymbosum) Stored under Controlled Atmosphere and Ozone

Table 3

Firmness penetration peak force (g) of highbush blueberries stored at 4°C or 12°C under controlled atmosphere storage conditions (CAS), ozone (O₃), or regular atmosphere (Air) during 10 days.

Firmness penetration peak force (g)
Treatment	Day 0	Day 1	Day 4	Day 7	Day 10
Temperature 4°C
Air	178.0 ± 42.5^Aa	138.8 ± 23.7^Ba	180.8 ± 17.5^Aa	195.3 ± 46.3^Aa	185.6 ± 34.3^Aa
CAS	159.2 ± 24.7^CDa	183.0 ± 26.0^ABb	140.5 ± 20.9^Db	167.8 ± 36.2^BCa	194.4 ± 44.2^Aa
O3	159.2 ± 24.7^Aa	169.0 ± 26.6^Ab	170.1 ± 33.8^Aa	176.1 ± 39.1^Aa	173.4 ± 51.7^Aa
Temperature 12°C
Air	178.0 ± 42.5^Aa	167.6 ± 23.3^Aa	192.0 ± 17.5^Aa	179.5 ± 23.4^Aa	219.8 ± 57.3^Ba
CAS	196.0 ± 28.9^Aab	150.1 ± 26.8^Bb	138.5 ± 21.9^Bb	146.3 ± 18.4^Bb	182.7 ± 35.5^Ab
O3	202.8 ± 24.8^Ab	146.1 ± 15.1^Bb	153.1 ± 15.6^Bc	143.5 ± 16.1^Bb	169.2 ± 26.6^Cb

Means within each row followed by the same capital letter are not significantly different ( > 0.05) from each other. Means within each column followed by the same lowercase letter are not significantly different ( > 0.05) from each other.