Abstract
Functional foods and the nutritional value of products are now very relevant for consumers. Additionally, interest in biodegradable components made from natural products has recently increased. The aim of this study was to determine the effect of different package types (with addition of films made of biopolymers enriched with natural extracts of ginger, cinnamon, and turmeric) on antioxidative properties of conventional, organic, and wild-grown raspberry fruit during frozen storage for 1-, 4-, 8-, and 12-month periods. The content of total polyphenol and anthocyanins, as well as antioxidant activity, were studied. Additionally, structural (FT-IR and UV-Vis), mechanical (tensile strength and elongation), and surface wetting angle tests of used films were studied. In all crop types, polyphenol content increased at 8 and 12 months of frozen storage in packages with an addition of biopolymer films. There was a statistically significant increase in the amount of total polyphenols in the last month of storage in the package with films with added cinnamon extract. In contrast, packages with ginger-enriched films contributed to an increase in polyphenols only in organically grown and wild raspberry fruit at the 4th, 8th, and 12th month and 8th and 12th month, respectively. The addition of films with turmeric extract increased the polyphenol content in the 8th month of frozen storage of organically grown raspberry fruit and in the 12th month of wild-grown raspberry. During frozen storage of wild raspberry fruit, an increase in anthocyanin content was observed in all cases in the 12th month. This result was almost twice as high as in the control sample. The greatest rise in the content of anthocyanins occurred when packages with films with turmeric extract were applied. Tendencies presented by this paper are not clear-cut in cases of antioxidant activity of analysed raspberries. A common feature was that, in general, after 12 months of storage, raspberries from all crops had higher and statistically significant antioxidant values compared to the first month of storage. Studies on the biocomposite films have shown that the structure of chitosan and alginate polymers was partly decomposed after 12 months, and the natural extracts and raspberry crops used had different effects on the mechanical properties of the biocomposites films. Based on the results of research that has been carried out, it can be concluded that it has not been clearly proven whether the addition of polysaccharide films to packages contributes to the increase in bioactive compounds during frozen storage.
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Claims 13
Claim · model-written summary
Polyphenol content increased at 8 and 12 months of frozen storage in packages with biopolymer films.
- Taxon
- Rubus idaeus L.
_Rubus_idaeus_-_Feuillage.jpg?width=60)
Rubus idaeust0 - Treatment
- packages with an addition of biopolymer filmse1
- Outcome
- polyphenol contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Rubus_idaeus_-_Feuillage.jpg?width=500)
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e1“In all crop types, polyphenol content increased at 8 and 12 months of frozen storage in packages with an addition of biopolymer films”
Claim · model-written summary
Films with added cinnamon extract significantly increased total polyphenols in the last month of storage.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Treatment
- films with added cinnamon extracte2
- Outcome
- amount of total polyphenolse2
- Direction
- increasee2
- Qualifier
- last month of storagee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e2“There was a statistically significant increase in the amount of total polyphenols in the last month of storage in the package with films with added cinnamon extract”
Claim · model-written summary
Ginger-enriched films increased polyphenols only in organically grown and wild raspberry fruit.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Material
- organically grown and wild raspberry fruite3
- Treatment
- ginger-enriched filmse3
- Outcome
- polyphenolse3
- Direction
- increasee3
- Qualifier
- at the 4th, 8th, and 12th month and 8th and 12th month, respectivelye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e3“packages with ginger-enriched films contributed to an increase in polyphenols only in organically grown and wild raspberry fruit at the 4th, 8th, and 12th month and 8th and 12th month, respectively”
Claim · model-written summary
Turmeric-extract films increased polyphenol content in the 8th month of storage of organically grown raspberry fruit.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Material
- organically grown raspberry fruite4
- Treatment
- films with turmeric extracte4
- Outcome
- polyphenol contente4
- Direction
- increasede4
- Qualifier
- in the 8th month of frozen storagee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e4“The addition of films with turmeric extract increased the polyphenol content in the 8th month of frozen storage of organically grown raspberry fruit and in the 12th month of wild-grown raspberry”
Claim · model-written summary
Turmeric-extract films increased polyphenol content in the 12th month of wild-grown raspberry.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Material
- wild-grown raspberrye4
- Treatment
- films with turmeric extracte4
- Outcome
- polyphenol contente4
- Direction
- increasede4
- Qualifier
- in the 12th monthe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e4“The addition of films with turmeric extract increased the polyphenol content in the 8th month of frozen storage of organically grown raspberry fruit and in the 12th month of wild-grown raspberry”
Claim · model-written summary
Anthocyanin content increased in wild raspberry fruit in all cases in the 12th month of frozen storage.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Material
- wild raspberry fruite5
- Outcome
- anthocyanin contente5
- Direction
- increasee5
- Qualifier
- in all cases in the 12th monthe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e5“During frozen storage of wild raspberry fruit, an increase in anthocyanin content was observed in all cases in the 12th month”
Claim · model-written summary
Anthocyanin content in wild raspberry at the 12th month was almost twice that of the control sample.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Material
- wild raspberry fruite5
- Outcome
- anthocyanin contente5
- Value
- almost twicee6
- Comparator
- control samplee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e5“During frozen storage of wild raspberry fruit, an increase in anthocyanin content was observed in all cases in the 12th month”
e6“This result was almost twice as high as in the control sample”
Claim · model-written summary
The greatest rise in anthocyanin content occurred with turmeric-extract films.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Treatment
- films with turmeric extracte7
- Outcome
- content of anthocyaninse7
- Direction
- risee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e7“The greatest rise in the content of anthocyanins occurred when packages with films with turmeric extract were applied”
Claim · model-written summary
Antioxidant activity trends were not clear-cut.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Outcome
- antioxidant activitye0
- Qualifier
- not clear-cute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e0“Tendencies presented by this paper are not clear-cut in cases of antioxidant activity of analysed raspberries”
Claim · model-written summary
After 12 months of storage, raspberries had higher and significant antioxidant values than after the first month.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e1“after 12 months of storage, raspberries from all crops had higher and statistically significant antioxidant values compared to the first month of storage”
Claim · model-written summary
Chitosan and alginate polymer structure in the films was partly decomposed after 12 months.
Not reportedTaxon
Verbatim
e2“Studies on the biocomposite films have shown that the structure of chitosan and alginate polymers was partly decomposed after 12 months”
Claim · model-written summary
Natural extracts and raspberry crops had different effects on the mechanical properties of the biocomposite films.
Not reportedTaxon
Verbatim
e3“the natural extracts and raspberry crops used had different effects on the mechanical properties of the biocomposites films”
Claim · model-written summary
It is not clearly proven that polysaccharide films increase bioactive compounds during frozen storage.
- Taxon
- Rubus idaeus L.Rubus idaeust0
- Outcome
- increase in bioactive compoundse4
- Qualifier
- has not been clearly provene4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic, Conventional and Wild Raspberries (Rubus idaeus L.)”
e4“it has not been clearly proven whether the addition of polysaccharide films to packages contributes to the increase in bioactive compounds during frozen storage”
The same questions in other papers
botanical · quality: phytochemicals · Rubus idaeus (red raspberry)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
storage · quality: phytochemicals · Rubus idaeus (red raspberry)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- no effect
- no effect
- negative
5 papers more in this group
See all 9 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.