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Should I Worry About Ethylene Gas

University researchers findings imply that there is no 'safe' level of ethylene that does not cause a deleterious effect on postharvest life . 

 

If 5 PPB is assumed to be the lowest possible ethylene concentration that can be achieved in a postharvest situation, then holding any non-climacteric fruit and vegetable in 5 PPB ethylene will generate 100% of its possible postharvest life. The percentage loss in postharvest life at any higher ethylene concentration can then be calculated from the regression equations. The percentage loss in postharvest life at 20°C for the 7 non-climacteric produce examined in wills et al. (1999) ranged from 25 to 46% postharvest life was lost.   

Conclusions

Although produce may only spend a small proportion of their postharvest life in each marketing situation, the effects of elevated ethylene levels are cumulative.  The end result successive levels of moderate ethylene levels throughout marketing can be a very short life in the hands of the consumer. 

The industry should be seeking to minimize the impact of ethylene on produce at all stages of the marketing chain.  The extended market life that would arise from a reduction in ethylene level during marketing can lead to consumers having greater confidence in the purchase of fruit and vegetables with a resultant increase in sales volume and/ or price.

(A complete copy of this report available upon request)


What is Ethylene Gas

Ethylene gas is the ripening agent which occurs naturally in nature. It causes fruits to ripen & decay, vegetables & floral to wilt. Controlling ethylene gas after picking will extend the life cycle of your commodity-allowing them to be held for a much a longer period of time. While refrigeration & humidity slow decay, they don't halt the production of harmful ethylene gas.

Ethylene gas is also used in ripening rooms to color up the fruit then is moved to a regular cold storage room with other produce. Some fruits gassed with ethylene are Bananas, Tomatoes and Avocados. The ethylene gas turns Bananas yellow, Tomatoes red and make Avocados soft and ready to eat. Our products are used before the fruit is gassed to keep it from breaking and after to help slow down the natural decay process. Ethylene gas and it's removal are both important in giving the consumer the best possible product.

While ethylene gas is used under controlled conditions as a ripening agent, even small amounts of ethylene gas during shipping and storage causes most fresh produce to deteriorate faster. Automotive emissions, plastics, smoke and fluorescent lights all increase ethylene gas levels. A single propane-powered forklift can cause serious damage in highly ethylene gas-sensitive commodities.


The Effects of Ethylene Gas

You've seen the effects of ethylene gas damage many times: decay (fresh produce and flower bulbs); russet spotting (leafy vegetables and eggplants); yellowing (cucumbers, broccoli and brussel sprouts); odor (garlic and onions); wilting (vegetables and cut flowers); scald and loss of crunch (apples); and rind breakdown (citrus). Control ethylene gas levels and you preserve freshness.


What Does Ethylene Control Do

Our products take the ethylene gas out of the air to slow down the natural decay process of fruits, vegetables and floral. The Power Pellets also kill molds, rots, bacteria and removes odors.


Independent Research Supports Ethylene Control's Claims

After an independent study in 1997 at the University of California Davis, research reported that the removal of ethylene gas is "critical to prevent concentrations that exceed the threshold for ethylene injury." In this study, several products that claim to eliminate ethylene gas were tested. Only Ethylene Control was found to remove ethylene gas. Whether in the laboratory or in actual application. Ethylene Control products are overachievers. They not only succeed in their primary function of counteracting ethylene gas, but also in killing air-born bacteria, viruses, sour rot, blue mold and brown rot fungi. CF Quality Consultants has proven our Power Pellets also kill molds and rots. The Townsend reports shows how the pellets kill bacteria. Contact us for both these reports.

Ethylene control: an essential link in the cold chain. As markets expand across the country and around the world, preserving freshness is one of our biggest challenge. While refrigeration and humidity slow decay, they don't halt the production of harmful ethylene gas. 

Use Ethylene Control products during post-harvest handling of fruit, vegetables and floral commodities during storage and shipment by truck or sea container.

Distribution Centers
Restaurants
Specialty Packers
Floral Reach-ins Packer/Shippers
Institutions
Retail Walk-ins
Re-packers


How Safe Are Ethylene Control Products  

The Power Pellets oxidize the ethylene gas with nascent oxygen (nascent oxygen is a type of oxygen that oxidizes ethylene gas, molds, rots, and odors), converting the pellets into a organic fertilizer. Unlike most other products on the market there are NO disposal problems with our patented Power Pellets. The material and ink that we use to make our sachets is approved by the FDA and the Ethylene Control Power Pellets are OMRI listed.

CF QUALITY CONSULTANTS

Click for Molds & Rots Tests    


How Ethylene Gas Effects your Produce

Ethylene production and sensitivity levels of selected fresh produce, flowers and nursery stock.

Fruits & Vegetables
Types
Apples
Apricots
Asian Pears
Asparagus
Avocados
Bananas
Berries
Broccoli
Brussel Sprouts
Cantaloupe
Carrots
Cherimoya
Cherries
Cucumbers
Eggplant
Grapefruit
Grapes
Kiwifruit
Lemons, Limes
Lettuce (*2)
Mangoes
Melons (*3)
Nectarines
Onions, Garlic
Oranges
Papaya
Passion Fruit
Peaches
Pears (*5)
Persimmons
Plums, Prunes
Potatoes (*6)
Quinces
Tomatoes
Watermelons

Floral & Nursery Commodities

Carnations -Cut
Roses -Cut
Flower Bulbs
Nursery Stock
Rate of Ethylene Production
VH
H
H
VL
H
M
L
VL
VL
H
VL
VH
VL
L
L
VL
VL
L
VL
VL
M
M
H
VL
VL
H
VH
H
H
L
M
VL
L
M
L




VL
VL
VL
VL
Level of Ethylene Sensitivity
H
H
H
M
H
H
L
H
H
M
L
H
L
H
M-H
M
L
H
M
H
H
H
H
L
M
H
H
H
H
H
H
M
H
H
H




H
H
H
H
Principal reaction to Ethylene Gas
Scald (*1)
Decay
Decay
Toughness
Decay
Decay
Mold
Yellowing
Yellowing
Decay
Bitterness
Decay
Softening
Yellowing
Brown Spots
Mold
Mold
Decay
Mold
Russet spotting 
Decay
Decay
Decay
Odor, sprouting
Mold (*4)
Decay
Decay
Decay
Decay
Decay
Decay
Sprouting
Decay
Shrink, decay
Lose firmness




Sleepiness (*7)
Prem. opening
Shrink (*8)
Slower start
VL = Very low, L = Low, M = Moderate, H = High, VH = Very High

*1. Lose crunch
*2. Leafy greens
*3. Crenshaw, Honeydew, Persian
*4. Rind breakdown
*5. Anjou, Bartlett, Bosc
*6. Processing, Seed
*7. Leaf curl
*8. Retards flower formation


* Source: Fresh Produce Manual for 1997 from the Produce Marketing Association and the 1991 Sea Land Shipping Guide for Perishables. This is only a partial list. For more information on specific commodities and about the impact of ethylene under various storage and shipping conditions call us toll free in the U.S. (800) 200-1909 or (559) 896-1909.