Abstract
One of the most limiting factors for the shelf life of fresh-cut fruits is the browning of cut surfaces. In the case of fresh-cut peaches, cut surface browning as well as excessive flesh softening and pit cavity breakdown are the major causes of quality deterioration. Surface treatments are necessary to delay physiological decay in fruit tissues, thus stabilizing the fruit surface and preventing degradative processes that affect the quality of the product. The aim of this research was to investigate the effect of postharvest chemical treatments, as antioxidants and firming agents, on fresh-cut peach fruits quality. The study was developed on a yellow fleshed nectarine (Prunus persica L. var. Nectarina 'Venus'), a yellow fleshed peach (Prunus persica L. 'K18'), and a clingstone peach [Prunus persica (L.) Batsch 'Federica']. Fruits were cut into wedges and dipped in antioxidant solutions for 3 minutes. The solutions contained respectively, ascorbic acid (2%), cysteine (0.5%), calcium lactate (1%) and their combinations (2% ascorbic acid + 1% calcium lactate, and 0.5% cysteine + 1% calcium lactate). After treatment, wedges were stored at 5°C for 8 days. Initially and during storage, chemical, physical, enzymatic, and sensorial analyses were performed. Among treatments, only cysteine showed a positive effect on quality retention, in particular on product appearance. Browning development and polyphenol oxidase activity were both lower for cysteine treated samples than for other treatments. Obviously, ascorbic acid treatment increased vitamin C concentration, and slightly affected the total phenolics content. The presence of calcium lactate affected the firmness only in 'Venus'. For color, the total color change (ΔE) values were very low in all samples. Our results confirmed that the high variability among cultivars may influence the effect of antioxidant and firming agents. Above all cysteine might be useful to keep visual quality of fresh-cut peaches during cold storage.
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Claims 9
Claim · model-written summary
Cysteine improved quality retention, particularly appearance.
- Taxon
- peaches
Prunus persicat0 - Treatment
- cysteinee0
- Outcome
- quality retentione0
- Direction
- positive effecte0
- Comparator
- Among treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among treatments, only cysteine showed a positive effect on quality retention, in particular on product appearance.”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Cysteine-treated samples had less browning than other treatments.
- Taxon
- peachesPrunus persicat0
- Treatment
- cysteine treated samplese0
- Outcome
- Browning developmente0
- Direction
- lowere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Browning development and polyphenol oxidase activity were both lower for cysteine treated samples than for other treatments.”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Cysteine-treated samples had lower polyphenol oxidase activity than other treatments.
- Taxon
- peachesPrunus persicat0
- Treatment
- cysteine treated samplese0
- Outcome
- polyphenol oxidase activitye0
- Direction
- lowere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Browning development and polyphenol oxidase activity were both lower for cysteine treated samples than for other treatments.”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Ascorbic acid increased vitamin C concentration.
- Taxon
- peachesPrunus persicat0
- Treatment
- ascorbic acid treatmente0
- Outcome
- vitamin C concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid treatment increased vitamin C concentration”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Ascorbic acid slightly affected total phenolics content.
- Taxon
- peachesPrunus persicat0
- Treatment
- ascorbic acid treatmente0
- Outcome
- total phenolics contente0
- Qualifier
- slightlye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid treatment increased vitamin C concentration, and slightly affected the total phenolics content.”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Calcium lactate affected firmness only in Venus.
- Taxon
- peachesPrunus persicat0
- Material
- Venuse0
- Treatment
- calcium lactatee0
- Outcome
- firmnesse0
- Qualifier
- only in 'Venus'e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of calcium lactate affected the firmness only in 'Venus'.”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Total color change was very low in all samples.
- Taxon
- peachesPrunus persicat0
- Outcome
- total color change (ΔE) valuese0
- Direction
- very lowe0
- Qualifier
- all samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total color change (ΔE) values were very low in all samples”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Cultivar variability may influence responses to antioxidant and firming agents.
- Taxon
- peachesPrunus persicat0
- Material
- cultivarse0
- Outcome
- effect of antioxidant and firming agentse0
- Qualifier
- may influencee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high variability among cultivars may influence the effect of antioxidant and firming agents”
t0“FRESH-CUT PEACHES”
Claim · model-written summary
Cysteine may help maintain visual quality during cold storage.
- Taxon
- peachesPrunus persicae0
- Treatment
- cysteinee0
- Outcome
- keep visual qualitye0
- Qualifier
- during cold storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cysteine might be useful to keep visual quality of fresh-cut peaches during cold storage”
The same questions in other papers
cysteine · physiology: antioxidant enzymes · Prunus persica (peach)Results agree
1 paper in the same direction as this paper
- positive
ascorbic acid · quality: phytochemicals · Prunus persica (peach)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.