Abstract
Fresh-cut vegetables are an important and rapidly developing class of convenience foods. Their storage life may be greatly reduced due to their high rates of respiration and transpiration and the possibility of enzymatic and microbiological deterioration. Consequently, the objective of this work was to determine the shelf life and the failure attribute that conditioned the shelf life of fresh-cut spinach treated with chemical solutions and packaged in bags with different permeabilities. The shelf life of fresh-cut vegetables was defined as the time of refrigerated storage at which any one of the sensory attributes scored below 7 or when the microbiological counts exceeded 5.10(7) CFU/g. Fresh-cut spinach was treated with citric acid and ascorbic acid solutions and packaged in mono-oriented polypropylene (OPP) bags or low-density polyethylene (LDPE) bags. Sensory attributes and total microbial counts were evaluated throughout refrigerated storage. Response surface methodology (RSM) was used to study the simultaneous effect of chemical treatment and refrigerated storage time on sensory and microbiological quality of fresh-cut spinach. A quadratic polynomial regression model was assumed for predicting off-odor, general appearance, wilting, browning, color, and mesophilic aerobic population. Type of packaging film only influenced development of off-odor (p£0.001) and had no effect on visual sensory attributes or microbiological counts (p>0.05). Development of off-odor was the attribute that limited shelf life of fresh-cut spinach packaged in OPP bags. On the other hand, shelf life of samples packaged in LDPE bags was dependent on a decrease in general appearance or an increase in microbiological counts, depending on the chemical treatment used.
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Claims 5
Claim · model-written summary
Packaging film type influenced off odor development.
- Taxon
- spinach
Spinacia oleraceat0 - Treatment
- Type of packaging filme0
- Outcome
- development of off-odore0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Type of packaging film only influenced development of off-odor (p£0.001)”
t0“spinach”
Claim · model-written summary
Packaging film type did not significantly affect visual sensory attributes.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- Type of packaging filme0
- Outcome
- visual sensory attributese0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Type of packaging film only influenced development of off-odor (p£0.001) and had no effect on visual sensory attributes or microbiological counts (p>0.05)”
t0“spinach”
Claim · model-written summary
Packaging film type did not significantly affect microbiological counts.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- Type of packaging filme0
- Outcome
- microbiological countse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Type of packaging film only influenced development of off-odor (p£0.001) and had no effect on visual sensory attributes or microbiological counts (p>0.05)”
t0“spinach”
Claim · model-written summary
Off odor development limited shelf life of spinach in OPP bags.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- OPP bagse0
- Outcome
- shelf lifee0
- Qualifier
- Development of off-odore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Development of off-odor was the attribute that limited shelf life of fresh-cut spinach packaged in OPP bags”
Claim · model-written summary
For LDPE bags, shelf life depended on reduced general appearance or increased microbiological counts according to chemical treatment.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- LDPE bagse0
- Outcome
- shelf lifee0
- Qualifier
- depending on the chemical treatment usede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shelf life of samples packaged in LDPE bags was dependent on a decrease in general appearance or an increase in microbiological counts, depending on the chemical treatment used”
t0“spinach”
The same questions in other papers
storage · quality: general · Spinacia oleracea (spinach)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.