Abstract
Abstract The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates. Results showed that, during storage of 20 days at 5 and 23°C, a recognizable reduction in weight and firmness loss with a stable respiration rate of coated plums than uncoated ones (4.5% and 8.4% at 5 and 23°C respectively) were noticed. The coating provided appealing optical properties with exceptionally controlled changes in pH and acidity of plums. The coating significantly reduced the change in total soluble solids (TSS) at the end of storage which was 9 and 11.67°brix compared to uncoated fruits (11.83 and 13.08°brix) at 5°C and 23°C, respectively. Moreover, the loss of bioactives (polyphenols, flavonoids, antioxidant capacity, and ascorbic acid) was arrested due to bioactive coating. A slight rise in total anthocyanins, carotenoids, and reducing sugars was observed at 23°C. However, they were efficiently suppressed in coated fruits stored at 5°C. Microbial growth was also effectively controlled in coated plum fruits. Overall, the results suggested that applying MPPE starch‐casein composite coating on plum fruits exhibited a noticeable shelf life of ≥20 and 14 days at 5 and 23°C, respectively, over uncoated fruits (about 12 and 8 days). Novelty impact statement Plum fruit is a nutritionally rich climacteric fruit. However, it is very prone to deterioration and thus a quick loss in its quality. Many postharvest practices, such as irradiation, controlled and modified atmosphere storage, and chemical and thermal treatment have been used. However, these methods affect the nutritional value of fruits. The biodegradable bioactive coating is one of the cost‐effective ways for the shelf‐life extension of fruits. In this regard, natural bioactive and antioxidant‐rich MPPE enriched starch‐casein composite acts as a barrier against moisture loss and gas exchange and provides a glossy appearance to the fruits. Moreover, the bioactive coating provides excellent pathogen resistance with effective retention of bioactive compounds. Using the finding of this study, the application of MPPE enriched starch‐casein composite coating to plum fruits stored at ambient (23°C) and cold (5°C) storage can extend the postharvest shelf‐life of plum, save cost and energy, and open the global marketing window for plum fruits. MPPE‐taro starch‐casein composite coating was successfully used to prolong the postharvest life of plum fruits as well as to minimize fruit processing industrial waste by utilizing pomegranate peel as a source of a bioactive ingredient. Physical (color, firmness, and weight loss), chemical (pH, acidity, and TSS), and bioactive (polyphenols, ascorbic acid, carotenoids, and anthocyanins) properties of plums were found to be retained with the application of coatings during storage. The composite coating containing natural bioactive compounds can be used as an effective alternative to synthetic preservatives with an eco‐friendly approach.
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Claims 10
Claim · model-written summary
The MPPE coating reduced weight and firmness loss of plums compared with uncoated plums during 20 days of storage at 5 and 23°C.
- Taxon
- plum
Prunus domesticae2 - Treatment
- micellar pomegranate peel extract (MPPE)e2
- Outcome
- weight and firmness losse1
- Direction
- reductione1
- Qualifier
- during storage of 20 days at 5 and 23°Ce1
- Comparator
- uncoated onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Results showed that, during storage of 20 days at 5 and 23°C, a recognizable reduction in weight and firmness loss with a stable respiration rate of coated plums than uncoated ones (4.5% and 8.4% at 5 and 23°C respectively) were noticed”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
Coated plums kept a stable respiration rate compared with uncoated plums.
- Taxon
- plumPrunus domesticae2
- Treatment
- micellar pomegranate peel extract (MPPE)e2
- Outcome
- respiration ratee1
- Direction
- stablee1
- Comparator
- uncoated onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Results showed that, during storage of 20 days at 5 and 23°C, a recognizable reduction in weight and firmness loss with a stable respiration rate of coated plums than uncoated ones (4.5% and 8.4% at 5 and 23°C respectively) were noticed”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
The coating provided appealing optical properties to plums.
- Taxon
- plumsPrunus domesticae1
- Treatment
- coatinge1
- Outcome
- optical propertiese1
- Qualifier
- appealinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The coating provided appealing optical properties with exceptionally controlled changes in pH and acidity of plums”
Claim · model-written summary
The coating controlled changes in pH and acidity of plums exceptionally well.
- Taxon
- plumsPrunus domesticae1
- Treatment
- coatinge1
- Outcome
- changes in pH and aciditye1
- Qualifier
- exceptionally controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The coating provided appealing optical properties with exceptionally controlled changes in pH and acidity of plums”
Claim · model-written summary
The coating significantly reduced the change in total soluble solids at the end of storage, to 9 and 11.67 °brix at 5 and 23°C versus 11.83 and 13.08 °brix in uncoated fruit.
- Taxon
- plumPrunus domesticae2
- Treatment
- The coatinge1
- Outcome
- change in total soluble solids (TSS)e1
- Direction
- reducede1
- Value
- 9 and 11.67°brixe1
- Qualifier
- at the end of storagee1
- Comparator
- uncoated fruitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The coating significantly reduced the change in total soluble solids (TSS) at the end of storage which was 9 and 11.67°brix compared to uncoated fruits (11.83 and 13.08°brix) at 5°C and 23°C, respectively”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
Bioactive compound losses (polyphenols, flavonoids, antioxidant capacity, ascorbic acid) were arrested by the bioactive coating.
- Taxon
- plumPrunus domesticae2
- Treatment
- bioactive coatinge1
- Outcome
- loss of bioactives (polyphenols, flavonoids, antioxidant capacity, and ascorbic acid)e1
- Direction
- arrestede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Moreover, the loss of bioactives (polyphenols, flavonoids, antioxidant capacity, and ascorbic acid) was arrested due to bioactive coating”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
Total anthocyanins, carotenoids and reducing sugars rose slightly in plums stored at 23°C.
- Taxon
- plumPrunus domesticae2
- Outcome
- total anthocyanins, carotenoids, and reducing sugarse1
- Direction
- risee1
- Qualifier
- slighte1
- Setting
- 23°Ce1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A slight rise in total anthocyanins, carotenoids, and reducing sugars was observed at 23°C. However, they were efficiently suppressed in coated fruits stored at 5°C”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
The rise in total anthocyanins, carotenoids and reducing sugars was efficiently suppressed in coated plums stored at 5°C.
- Taxon
- plumPrunus domesticae2
- Treatment
- micellar pomegranate peel extract (MPPE)e2
- Outcome
- total anthocyanins, carotenoids, and reducing sugarse1
- Direction
- suppressede1
- Qualifier
- stored at 5°Ce1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A slight rise in total anthocyanins, carotenoids, and reducing sugars was observed at 23°C. However, they were efficiently suppressed in coated fruits stored at 5°C”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
Microbial growth was effectively controlled in coated plum fruit.
- Taxon
- plumPrunus domesticae1
- Treatment
- micellar pomegranate peel extract (MPPE)e2
- Outcome
- Microbial growthe1
- Direction
- controllede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Microbial growth was also effectively controlled in coated plum fruits”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
Claim · model-written summary
MPPE coating extended the shelf life of plums to at least 20 days at 5°C and 14 days at 23°C, compared with about 12 and 8 days for uncoated fruit.
- Taxon
- plumPrunus domesticae2
- Treatment
- micellar pomegranate peel extract (MPPE)e2
- Outcome
- shelf lifee1
- Direction
- higherinferrede1
- Value
- ≥20 and 14 dayse1
- Qualifier
- about 12 and 8 dayse1
- Comparator
- uncoated fruitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exhibited a noticeable shelf life of ≥20 and 14 days at 5 and 23°C, respectively, over uncoated fruits (about 12 and 8 days)”
e2“The present investigation applied a new coating (taro starch‐casein composite enriched with micellar pomegranate peel extract (MPPE)) to mature plum ( Prunus salicina L.) fruits in a randomized factorial design with five replicates”
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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.