Abstract
Edible coatings are an environmentally friendly technology that is applied to many products to control moisture transfer, soluble and aromatic materials, gas exchange or oxidation processes. The objective of this research was to study the effect of tragacanth gum at the concentrations of 0, 5, 10, and 15 kg m-3 on storage life and edible quality of apple cvs. Red Delicious and Golden Delicious. After applying treatments, the fruits were kept in a cold storage at a temperature of 0±1 ˚C and relative humidity of 85-95 percent. The weight reduction, external quality, microbial load, and general acceptability of the samples were evaluated after 0, 30, 60, 90 and 120 days of storage, then compared with uncoated apples. It was found that the tragacanth gum significantly reduced fruit weight loss compared to the control, so that weight reduction in uncoated apples was eight times greater than fruits treated with tragacanth gum at 10 kg m-3. This coating preserved firmness of fruit tissue in storage and prevented the softening and senescent breakdown of apples. The tragacanth gum coating desirably preserved the external quality and improved the microbial load, sensory and external properties of the fruits, preserved quality factors of the apples, and prevented fruit ripening during storage. Among the various treatments, the coating at 10 kg m-3 was more effective than the other treatments, maintained fruit juice acidity and pH at desirable levels, and prevented increases in the contents of soluble solids during the storage.
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Claims 7
Claim · model-written summary
Tragacanth gum reduced apple fruit weight loss; uncoated fruit lost eight times as much weight as fruit coated at 10 kg m-3.
- Taxon
- apples
Malus domesticae0 - Treatment
- tragacanth gum at 10 kg m-3e0
- Outcome
- fruit weight losse0
- Direction
- reducede0
- Value
- eight timese0
- Comparator
- uncoated applese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tragacanth gum significantly reduced fruit weight loss compared to the control, so that weight reduction in uncoated apples was eight times greater than fruits treated with tragacanth gum at 10 kg m-3”
Claim · model-written summary
The coating preserved fruit tissue firmness and prevented softening and senescent breakdown in storage.
- Taxon
- appleMalus domesticat0
- Treatment
- This coatinge0
- Outcome
- firmness of fruit tissuee0
- Direction
- preservede0
- Qualifier
- in storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“This coating preserved firmness of fruit tissue in storage and prevented the softening and senescent breakdown of apples.”
Claim · model-written summary
Tragacanth gum coating preserved external quality and improved microbial load, sensory properties, and external properties.
- Taxon
- appleMalus domesticat0
- Treatment
- tragacanth gum coatinge0
- Outcome
- microbial load, sensory and external propertiese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“The tragacanth gum coating desirably preserved the external quality and improved the microbial load, sensory and external properties of the fruits”
Claim · model-written summary
Tragacanth gum coating prevented apple fruit ripening during storage.
- Taxon
- appleMalus domesticat0
- Outcome
- fruit ripeninge0
- Direction
- preventede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“prevented fruit ripening during storage”
Claim · model-written summary
Coating at 10 kg m-3 was more effective than the other treatments.
- Taxon
- appleMalus domesticat0
- Treatment
- coating at 10 kg m-3e0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“the coating at 10 kg m-3 was more effective than the other treatments”
Claim · model-written summary
Coating at 10 kg m-3 maintained fruit juice acidity and pH at desirable levels.
- Taxon
- appleMalus domesticat0
- Treatment
- coating at 10 kg m-3e0
- Outcome
- fruit juice acidity and pHe0
- Direction
- maintainede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“the coating at 10 kg m-3 was more effective than the other treatments, maintained fruit juice acidity and pH at desirable levels”
Claim · model-written summary
Coating at 10 kg m-3 prevented increases in soluble solids during storage.
- Taxon
- appleMalus domesticat0
- Treatment
- coating at 10 kg m-3e0
- Outcome
- contents of soluble solidse0
- Direction
- prevented increasese0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruits”
e0“the coating at 10 kg m-3 was more effective than the other treatments, maintained fruit juice acidity and pH at desirable levels, and prevented increases in the contents of soluble solids during the storage”
The same questions in other papers
storage · quality: sugar starch · Malus domestica (apple)Positive and negative results
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- negative
- negative
- negative
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See all 34 papers →storage · quality: postharvest · Malus domestica (apple)Positive and negative results
92 papers in the same direction as this paper · 22 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- negative
114 papers more in this group
See all 118 papers →storage · soil: biology · Malus domestica (apple)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.