Produce Distribution Facility - Del Monte Fresh Produce - Atlanta, GA

Download Case Study PDF

AiroCide PPT Photocatalytic Air Purifying Technology

AiroCide PPT photocatalytic air purifiers contain the same NASA-developed technology used in a variety of AiroCide air purifying product lines. In addition to serving the floral and perishable preservation and food safety industry, the technology is has been developed to kill/remove/eliminate airborne pathogenic and non-pathogenic microorganisms in vegetative and spore states (bacteria, mold & fungi, viruses and dust mites), allergens, odors and harmful volatile organic compounds (VOC's ) in air in a variety of commercial, government, and residential applications including the medical healthcare industry (AiroCide air purifiers are FDA Class II listed medical devices).


Clinical tests were conducted at the Del Monte Fresh Produce Company's Atlanta distribution facility to measure the effect of AiroCide PPT in reducing ethylene gas and airborne mold/fungi.

Ethylene Gas

Del Monte personnel performed ethylene gas reduction tests prior to the airborne mold/fungi tests summarized in this report. Ethylene gas was reported to have been reduced from a concentration of 250 parts per million (PPM) to 0.5 PPM in 66 hours.


The AiroCide PPT system reduced the amount of airborne mold in the cooler by an overall 44% after 72 hours of operation.


The AiroCide PPT system used in the produce cooler consisted of one (1) ACS-100 unit.

The test period consisted of four (4) days of air sampling. Baseline air samples were taken in the cooler on Monday, 10/02/06 without the AiroCide PPT system operating.

Active On samples were taken after 24, 48 and 72 hours of AiroCide PPT use, on Tuesday 10/03/06, Wednesday, 10/04/06 and Thursday 10/05/06.

Air samples were taken with an impingement air sampler (similar to the Anderson N6 sampler) on 15 x 100 mm plastic petri dishes. This type of slit air sampler is considered the most accurate method of measuring viable (live) mold and is superior to air sampling that utilizes ambient or gravity spore capturing techniques.

Four locations were sampled for airborne yeast and mold and sent to Siliker Inc. Food Science Center, South Holland, IL for analysis.


Ethylene gas was reduced in the cooler by 99.8% in 66 hours.

Download Case Study PDF