1. Week: 13 Effect of Controlled Atmosphere Storage on the Quality of Three Fresh Fig Cultivars Adopted from: Carlos H. Crisosto http://groups.ucanr.org/freshfig

2. Controlled Atmospheres (CA) involves: Reduced oxygenReduced oxygen Increasing carbon dioxideIncreasing carbon dioxide Adding carbon monoxideAdding carbon monoxide Removing carbon dioxide, ethylene and other volatilesRemoving carbon dioxide, ethylene and other volatiles

3. The Commodity of Its Environment B1 (commodity depends on:B1 (commodity depends on: –Natural dermal system (Epidermis, cuticle, stomata, lenticles)(Epidermis, cuticle, stomata, lenticles) –Added barriers (surface coating, film wrapping) O 2 CO 2 N 2 C 2 H 4 H 2 OHeat B1

4. The Commodity of Its Environment B2 (package) depends on:B2 (package) depends on: –Permeability of packaging materials –Ventilation opening –Plastic liners O 2 CO 2 N 2 C 2 H 4 H 2 OHeat B2

5. CultivarsTreatments Brown TurkeyAir KadotaCA (6% O 2 = 17% CO 2 ) Mission CA = Controlled Atmosphere

6. Cultivars Storage @ 32ºF (days) Storage @ 32ºF (days) Brown Turkey311 Kadota392 Mission193 27

7. Sound (%) ‘Kadota’ 20 30 40 50 60 70 80 90 100 Sound (%) 0 10 0123 Days at 68°F Shelf life After 31 Days at 32°F AirCA

8. Decay (%) ‘Kadota’ 0 20 40 60 80 100 0123 Days at 68°F Shelf life After 31 Days at 32°F Sound (%) AirCA

9. Off Color (%) ‘Kadota’ Air 0 10 20 30 40 50 60 70 80 90 100 0123 Days at 68°F Shelf life After 31 Days at 32°F Sound (%) CA

10. Conclusions Decay incidence was reduced and delayed by the CA treatment in the three tested cultivars.Decay incidence was reduced and delayed by the CA treatment in the three tested cultivars. In ‘Kadota’, a yellow skin cultivar, CA reduced the “off color” incidence thus, increasing the percentage of sound fruit.In ‘Kadota’, a yellow skin cultivar, CA reduced the “off color” incidence thus, increasing the percentage of sound fruit. As a next step, commercial and practical application of CA-packaging in the fresh fig industry should be attempted.As a next step, commercial and practical application of CA-packaging in the fresh fig industry should be attempted.