refrigerators, bulbs, & ethylene gas

Claude Sweet
Fri, 17 Sep 2004 12:59:30 PDT  has several citations that relate to this question.

Use the search engine and enter "ethylene gas and its effects" to locate 
the articles.

The amounts of ethylene gas that will trigger a response can be as low 
as 10 parts per million to trigger the ripening process of kiwifruit 
stored at 33 degrees F.

It is important to know the source of the ethylene - Apples are a high 
producer of ethylene - the temperature, and the minimum length of 
exposure the target produce or bulb has to the gas.

This site is a profession organization of Dutch growers and should be 

Claude Sweet wrote:

>In a message dated 9/17/2004 2:21:21 PM Eastern Daylight Time, 
>According to information I received from a researcher in Holland, the amount
>of ethylene gas given off by fruit such as apples is relatively small
>Did your researcher provide any hard figures?  I have seen claims of apples 
>producing anywhere from 30 to 200 ppm when stored in the fruit or vegetable 
>crisper of a home refrigerator.  Variables might include "ripeness" of the apple, 
>variety, temperature and ventilation.
>Mark Mazer
>USDA Zone 5
>Giant Schnauzer Rescue
>pbs mailing list

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