Abstract
A number of ozone technology systems have been claimed to remove the ethylene gas released from horticultural produce and airborne pathogens in storage environment. However, contradictory results were reported in the literature. This study was aimed to determine the effect of ozone technology system in removing the ethylene gas in the storage atmosphere for extending shelf life of mango and broccoli. The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system. The experiments were conducted separately for mango and broccoli, which are a medium producing and sensitive and a very low producing but high sensitive to ethylene commodities, respectively. Mixed loads of fruits and vegetables were also tested representing the common practice during storage and distribution. Regular slotted containers and reusable plastic containers were compared. Ethylene gases (15 ppm) were introduced in the cold rooms. Samples were kept at their optimum temperatures. Changes in respiration and ethylene production rates, total soluble solid (TSS), titratable acidity (TA), firmness, L*, a*, b* color and weight loss were determined during storage. In mango, TSS/TA in the control group showed a slight increase after 7 days. In broccoli, yellowing after 7 days was apparent to the samples stored in both cold rooms (with or without ozone). No significant (p > 0.05) differences in weight loss, respiration rate and ethylene production rate were observed for both mango and broccoli. Similar trends were shown for mixed loads. Corrugated and reusable containers showed no significant (p > 0.05) differences in terms of produce quality. In our cases, ozone technology system did not seem to effectively eliminate the ethylene in a cold room nor prolong the shelf life of mango, broccoli and mixed loads.
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Claims 10
Claim · model-written summary
Ozone technology did not change weight loss, respiration rate or ethylene production rate of mango relative to the control.
- Taxon
- mango
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Mangifera indicae1 - Treatment
- ozone technology systeme0
- Outcome
- weight loss, respiration rate and ethylene production ratee1
- Direction
- No significante1
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e1“No significant (p > 0.05) differences in weight loss, respiration rate and ethylene production rate were observed for both mango and broccoli”
Claim · model-written summary
Ozone technology did not change weight loss, respiration rate or ethylene production rate of broccoli relative to the control.
- Taxon
- broccoli
Brassica oleracea var. italicae1 - Treatment
- ozone technology systeme0
- Outcome
- weight loss, respiration rate and ethylene production ratee1
- Direction
- No significante1
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e1“No significant (p > 0.05) differences in weight loss, respiration rate and ethylene production rate were observed for both mango and broccoli”
Claim · model-written summary
Mango TSS/TA in the control group increased slightly after 7 days of storage.
- Taxon
- mangoMangifera indicae2
- Outcome
- TSS/TAe2
- Direction
- increasee2
- Qualifier
- after 7 dayse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In mango, TSS/TA in the control group showed a slight increase after 7 days”
Claim · model-written summary
Broccoli showed yellowing after 7 days of storage in both cold rooms, with or without ozone.
- Taxon
- broccoliBrassica oleracea var. italicae3
- Outcome
- yellowinge3
- Qualifier
- after 7 dayse3
- Setting
- both cold roomse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In broccoli, yellowing after 7 days was apparent to the samples stored in both cold rooms (with or without ozone)”
Claim · model-written summary
Corrugated and reusable containers did not differ significantly in produce quality of fruits and vegetables.
Verbatim
e4“Corrugated and reusable containers showed no significant (p > 0.05) differences in terms of produce quality”
e6“Mixed loads of fruits and vegetables were also tested representing the common practice during storage and distribution”
Claim · model-written summary
Mixed loads of fruits and vegetables showed trends similar to those of single commodities.
Verbatim
e5“Similar trends were shown for mixed loads”
e6“Mixed loads of fruits and vegetables were also tested representing the common practice during storage and distribution”
Claim · model-written summary
The ozone technology system did not effectively eliminate ethylene in a cold room for mango.
- Taxon
- mangoMangifera indicae7
- Treatment
- ozone technology systeme0
- Outcome
- ethylene in a cold roome7
- Direction
- did not seem to effectively eliminatee7
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e7“In our cases, ozone technology system did not seem to effectively eliminate the ethylene in a cold room nor prolong the shelf life of mango, broccoli and mixed loads”
Claim · model-written summary
The ozone technology system did not prolong the shelf life of mango.
- Taxon
- mangoMangifera indicae7
- Treatment
- ozone technology systeme0
- Outcome
- shelf lifee7
- Direction
- no_changeinferrede7
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e7“In our cases, ozone technology system did not seem to effectively eliminate the ethylene in a cold room nor prolong the shelf life of mango, broccoli and mixed loads”
Claim · model-written summary
The ozone technology system did not prolong the shelf life of broccoli.
- Taxon
- broccoliBrassica oleracea var. italicae7
- Treatment
- ozone technology systeme0
- Outcome
- shelf lifee7
- Direction
- no_changeinferrede7
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e7“In our cases, ozone technology system did not seem to effectively eliminate the ethylene in a cold room nor prolong the shelf life of mango, broccoli and mixed loads”
Claim · model-written summary
The ozone technology system did not prolong the shelf life of mixed loads of fruits and vegetables.
Verbatim
e0“The experiment was carried out in two similar cold rooms (10.68 m3) with and without (control) the ozone technology system”
e6“Mixed loads of fruits and vegetables were also tested representing the common practice during storage and distribution”
e7“In our cases, ozone technology system did not seem to effectively eliminate the ethylene in a cold room nor prolong the shelf life of mango, broccoli and mixed loads”
The same questions in other papers
ozone · physiology: hormones · Brassica oleracea (wild cabbage)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
ozone · quality: postharvest · Mangifera indica (mango)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →ozone · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.