Abstract
The aim of this work is to evaluate the impact of high-power pulsed light (HPPL) on the microbial control and nutritional properties of strawberries. Berries were treated with HPPL and afterwards analyzed in terms of microbial contamination, shelf life extension, antioxidant capacity, firmness, total phenolic, total anthocyanin and ascorbic acid content, and colour. Results indicate that the decontamination of strawberries by HPPL was significant compared to control. Naturally distributed mesophilic bacteria on the surface of strawberries were inactivated by 2.2 log, and inoculated Bacillus cereus and Listeria monocytogenes were inactivated by 1.5 and 1.1 log, respectively. Yeasts/microfungi distributed on the surface of strawberries were inactivated by 1 log. The shelf life of treated strawberries was extended by 2 days. The increase of temperature on the surface of fruit never exceeded 42 °C. No significantly important differences were observed in total phenolic, total anthocyanin and ascorbic acid content, and antioxidant capacity of strawberry fruits before and after pulsed light treatment. Moreover, no impact on the strawberry colour or firmness was found after HPPL treatment. In conclusion, HPPL is fast, effective, non-thermal and environmentally friendly technique which can be applied for microbial control of strawberries.
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Claims 10
Claim · model-written summary
HPPL significantly decontaminated strawberries versus control.
- Taxon
- strawberries
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- HPPLe0
- Outcome
- decontamination of strawberriese0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“decontamination of strawberries by HPPL was significant compared to control”
Claim · model-written summary
HPPL inactivated Naturally distributed mesophilic bacteria by 2.2 log.
- Taxon
- StrawberriesFragaria ×ananassat0
- Interactor
- mesophilic bacteriae0other
- Outcome
- Naturally distributed mesophilic bacteriae0
- Direction
- inactivatede0
- Value
- 2.2 loge0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“Naturally distributed mesophilic bacteria on the surface of strawberries were inactivated by 2.2 log”
Claim · model-written summary
HPPL inactivated Bacillus cereus by 1.5.
- Taxon
- StrawberriesFragaria ×ananassat0
- Interactor
- Bacillus cereus
Bacillus cereuse0other - Outcome
- Bacillus cereuse0
- Direction
- inactivatede0
- Value
- 1.5e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“inoculated Bacillus cereus and Listeria monocytogenes were inactivated by 1.5 and 1.1 log, respectively”
Claim · model-written summary
HPPL inactivated Listeria monocytogenes by 1.1.
- Taxon
- StrawberriesFragaria ×ananassat0
- Interactor
- Listeria monocytogenes
Listeria monocytogenese0other - Outcome
- Listeria monocytogenese0
- Direction
- inactivatede0
- Value
- 1.1e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“inoculated Bacillus cereus and Listeria monocytogenes were inactivated by 1.5 and 1.1 log, respectively”
Claim · model-written summary
HPPL inactivated Yeasts/microfungi by 1 log.
- Taxon
- StrawberriesFragaria ×ananassat0
- Interactor
- Yeasts/microfungie0other
- Outcome
- Yeasts/microfungie0
- Direction
- inactivatede0
- Value
- 1 loge0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“Yeasts/microfungi distributed on the surface of strawberries were inactivated by 1 log”
Claim · model-written summary
HPPL extended strawberry shelf life by 2 days.
- Taxon
- strawberriesFragaria ×ananassae0
- Treatment
- treatede0
- Outcome
- shelf lifee0
- Direction
- extendede0
- Value
- 2 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“The shelf life of treated strawberries was extended by 2 days”
Claim · model-written summary
Fruit surface temperature did not exceed 42 °C.
- Taxon
- StrawberriesFragaria ×ananassat0
- Outcome
- temperature on the surface of fruite0
- Direction
- never exceedede0
- Value
- 42 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberries”
e0“The increase of temperature on the surface of fruit never exceeded 42 °C”
Claim · model-written summary
Phenolic, anthocyanin and ascorbic acid content did not differ materially after pulsed light.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- pulsed light treatmente0
- Outcome
- total phenolic, total anthocyanin and ascorbic acid contente0
- Direction
- No significantly important differencese0
- Comparator
- beforee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significantly important differences were observed in total phenolic, total anthocyanin and ascorbic acid content, and antioxidant capacity of strawberry fruits before and after pulsed light treatment”
Claim · model-written summary
Antioxidant capacity did not differ materially after pulsed light.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- pulsed light treatmente0
- Outcome
- antioxidant capacitye0
- Direction
- No significantly important differencese0
- Comparator
- beforee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significantly important differences were observed in total phenolic, total anthocyanin and ascorbic acid content, and antioxidant capacity of strawberry fruits before and after pulsed light treatment”
Claim · model-written summary
HPPL did not affect strawberry colour or firmness.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- HPPL treatmente0
- Outcome
- strawberry colour or firmnesse0
- Direction
- no impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no impact on the strawberry colour or firmness was found after HPPL treatment”
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See all 32 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.