Abstract
Red raspberries (Rubus idaeus L.) are often chosen by consumers for their flavour, taste, and health-promoting properties.A relevant issue related to these fruits is their high perishability.The aim of this study was to investigate the effect of the ultraviolet C light-emitting diode (UVC-LED) treatment on soil-grown and pot-grown raspberries in extending their shelf--life, maintaining their high quality throughout the preservation period, and improving features related to their phenolic compound content.The UVC-LED treatment increased the total phenolic content (158 to 200 mg GAE/100 g) and ferric reducing antioxidant power (55.3 to 78.6 mmol Fe 2+ /kg) of the pot-grown raspberries when the UVC-LED treatment was followed by storage in a climate-controlled room (20C).Total anthocyanin content did not increase significantly compared to the control samples.Contrary to expectations, no effect of reducing the microbial count after storage was observed due to the exposure of raspberries to the UVC-LED radiation.The positive outcomes derived from the analyses of bioactive compounds may be implemented in further studies on the same matrix to better manage the treatment and its conditions, such as the exposure time, the distance from the LED lamps, and the UVC-rays' dose, in order to find the best combination in terms of efficacy and efficiency.
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Claims 4
Claim · model-written summary
UVC-LED treatment increased total phenolic content of pot-grown raspberries from 158 to 200 mg GAE/100 g after storage at 20C.
- Taxon
- Red Raspberries
_Rubus_idaeus_-_Feuillage.jpg?width=60)
Rubus idaeust0 - Material
- pot-grown raspberriese0
- Treatment
- UVC-LED treatmente0
- Outcome
- total phenolic contente0
- Direction
- increasede0
- Value
- 158 to 200 mg GAE/100 ge0
- Setting
- climate-controlled room (20C)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Rubus_idaeus_-_Feuillage.jpg?width=500)
Verbatim
e0“The UVC-LED treatment increased the total phenolic content (158 to 200 mg GAE/100 g) and ferric reducing antioxidant power (55.3 to 78.6 mmol Fe 2+ /kg) of the pot-grown raspberries when the UVC-LED treatment was followed by storage in a climate-controlled room (20C).”
t0“Red Raspberries”
Claim · model-written summary
UVC-LED treatment increased ferric reducing antioxidant power of pot-grown raspberries from 55.3 to 78.6 mmol Fe 2+ /kg after storage at 20C.
- Taxon
- Red RaspberriesRubus idaeust0
- Material
- pot-grown raspberriese0
- Treatment
- UVC-LED treatmente0
- Outcome
- ferric reducing antioxidant powere0
- Direction
- increasede0
- Value
- 55.3 to 78.6 mmol Fe 2+ /kge0
- Setting
- climate-controlled room (20C)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The UVC-LED treatment increased the total phenolic content (158 to 200 mg GAE/100 g) and ferric reducing antioxidant power (55.3 to 78.6 mmol Fe 2+ /kg) of the pot-grown raspberries when the UVC-LED treatment was followed by storage in a climate-controlled room (20C).”
t0“Red Raspberries”
Claim · model-written summary
Total anthocyanin content did not increase significantly relative to controls.
- Taxon
- Red RaspberriesRubus idaeust0
- Treatment
- Ultraviolet C Light-Emitting Diode Treatmentt1
- Outcome
- Total anthocyanin contente0
- Direction
- did not increasee0
- Comparator
- control samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total anthocyanin content did not increase significantly compared to the control samples.”
t0“Red Raspberries”
t1“Ultraviolet C Light-Emitting Diode Treatment”
Claim · model-written summary
UVC-LED exposure did not reduce microbial count after raspberry storage.
- Taxon
- Red RaspberriesRubus idaeust0
- Treatment
- exposure of raspberries to the UVC-LED radiatione0
- Outcome
- microbial count after storagee0
- Direction
- no effect of reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no effect of reducing the microbial count after storage was observed due to the exposure of raspberries to the UVC-LED radiation.”
t0“Red Raspberries”
The same questions in other papers
radiation · soil: biology · Rubus idaeus (red raspberry)Positive and negative results
1 in the opposite direction
- positive
uv · quality: phytochemicals · Rubus idaeus (red raspberry)Positive and negative results
2 in the opposite direction
- no effect
- no effect
light · quality: phytochemicals · Rubus idaeus (red raspberry)Results agree
2 papers in the same direction as this paper
- positive
- positive
light · molecular: metabolites · Rubus idaeus (red raspberry)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.