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Grapes in storage are susceptible to decay, particularly Botrytis Rot, from airborne and surface microorganisms that are often present in high humidity storage facilities. With Purfresh’s cold storage solution, packers and processors are able to extend product life and marketability by decreasing decay losses naturally. Ozone can be used as a complementary measure with various post-harvest techniques.
SCIENCE-BASED SOLUTION
Purfresh’s patented science-based cold storage solution generates ozone from the oxygen in the air on-site and delivers defined, low-dose specific concentrations of gaseous ozone into the atmosphere, for use as a powerful but safe disinfectant. The solution kills airborne and surface microorganisms and effectively controls Botrytis. After killing decay causing microorganisms, ozone immediately reverts to pure oxygen, leaving no residue and maintaining product taste, color, texture and smell characteristics in its natural state.
OPTIMUM SAFETY AND EFFICACY
Purfresh’s unique closed-loop concentration control and remote monitoring capabilities provide optimum safety and efficacy. Its measurement sensors and on-board computer maintains ozone concentrations to within +/- 10 ppb of a desired set point. The solution includes fail-safe ambient air sensors, which constantly ensure work areas maintain ozone concentrations well within OSHA standards. Its remote monitoring service constantly tracks system performance and provides detailed reports and automated alerts.

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Reduce and control decay
- Eliminate Botrytis Rot
- Kill surface and airborne microorganisms
- Stop nesting of decay in stored bins
Reduce/eliminate post-harvest chemicals
Reduce post-harvest fungicides
- Ideal for organic and conventional
Increase storage and shelf life
- Maintain stem quality and color
USDA and FDA approved
Certified organic
Problem
Solution
- Purfresh Cold Storage
Results
- Reduced Botrytis Rot
- Eliminated spread of surface and airborne microorganisms
- Improved product quality including greener stems
- Increased shelf life by several weeks
“With the deployment of Purfresh’s ozone-based cold storage solution, we’ve materially enhanced storage life of grapes, kiwifruit and Asian pears.”
— Kool Kountry |