Abstract
In order to evaluate the effects of short, compared to medium or long distribution chains, on some quality parameters of organically grown fresh tomatoes, a post-harvest experiment was carried out by reproducing in the lab the most common temperature, relative humidity conditions and storage-transport times occurring in the real distribution chain of organic horticultural fresh products. Organically grown tomatoes of the cv. Nerina harvested at three different ripening stages (mature green, turning, red) were subjected to conditions corresponding to a short (1 day at room temperature), a medium (cold storage for 2 days, followed by ripening at room temperature) and a long distribution chain (cold storage for 6 or 9 days, followed by ripening at room temperature). In addition fruits harvested at the three different ripening stage were also subjected to optimal storage condition (8°C, turning and red tomatoes; 13°C green tomatoes, all at 95% R.H.) for 16 days. At the end of the post-harvest experiment fruits were analyzed for volatile aroma compounds, organic acids, ascorbic acid, soluble sugars, texture, phenolic compounds. Conditions of medium and long distribution chain (harvest at the green stage and cold storage-transport) did not have a significant detrimental effect when compared to short chain on the formation of some key tomato odorants, such as the lipid-derived aroma compounds (among which (3Z)-3-hexenal, hexanal) and the carotenoid-derived volatiles (among which damascenone, b-ionone). On the other hand, conditions of medium and long chain greatly inhibited the formation of other aroma compounds (such as 1-nitro-2-phenylethane and 2-isobutylthiazole, related to the amino acid metabolism), which showed markedly higher levels in vine ripened fruits (or at the end of the short chain experiment). Another significant effect was observed on firmness: fruits subjected to medium or long chain tended to show a reduced firmness when compared to vine ripened tomatoes, at harvest or at the end of the short chain. On the contrary biosynthesis of ascorbic acid was scarcely affected by the distribution chain conditions: green harvested tomatoes, subjected to cold storage and ripened at room temperature afterwards, were able to accumulate an amount of ascorbic acid similar to that observed in vine ripened fruits. Acknowledgement: The present study was performed within the project BIOVITA (W.P.3.1- Supply chain of horticultural products) funded by the Italian Ministry of Agriculture, Food and Forestry Policy.
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Claims 5
Claim · model-written summary
Medium and long distribution chains, compared with the short chain, had no significant detrimental effect on formation of key tomato odorants such as lipid-derived aroma compounds and carotenoid-derived volatiles.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- medium and long distribution chaine0
- Outcome
- formation of some key tomato odorantse0
- Direction
- did not have a significant detrimental effecte0
- Comparator
- short chaine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conditions of medium and long distribution chain (harvest at the green stage and cold storage-transport) did not have a significant detrimental effect when compared to short chain on the formation of some key tomato odorants”
Claim · model-written summary
Medium and long chain conditions greatly inhibited formation of other aroma compounds such as 1-nitro-2-phenylethane and 2-isobutylthiazole, which were markedly higher in vine ripened fruits.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- medium and long chaine0
- Outcome
- formation of other aroma compoundse0
- Direction
- inhibitede0
- Comparator
- vine ripened fruitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“organically grown tomatoes”
e0“conditions of medium and long chain greatly inhibited the formation of other aroma compounds (such as 1-nitro-2-phenylethane and 2-isobutylthiazole, related to the amino acid metabolism)”
e1“which showed markedly higher levels in vine ripened fruits”
Claim · model-written summary
Fruits subjected to medium or long chain tended to show reduced firmness compared with vine ripened tomatoes.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- medium or long chaine0
- Outcome
- firmnesse0
- Direction
- reducede0
- Comparator
- vine ripened tomatoese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits subjected to medium or long chain tended to show a reduced firmness when compared to vine ripened tomatoes”
Claim · model-written summary
Biosynthesis of ascorbic acid was scarcely affected by distribution chain conditions.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- distribution chain conditionse0
- Outcome
- biosynthesis of ascorbic acide0
- Direction
- scarcely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“organically grown tomatoes”
e0“biosynthesis of ascorbic acid was scarcely affected by the distribution chain conditions”
Claim · model-written summary
Green harvested tomatoes cold stored and then ripened at room temperature accumulated an amount of ascorbic acid similar to vine ripened fruits.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- cold storage and ripened at room temperaturee0
- Outcome
- amount of ascorbic acide0
- Direction
- similare0
- Comparator
- vine ripened fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green harvested tomatoes, subjected to cold storage and ripened at room temperature afterwards, were able to accumulate an amount of ascorbic acid similar to that observed in vine ripened fruits”
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