Abstract
Great economic losses to harvested vegetable fruits are raised by postharvest chilling injury during transportation and storage, which can be safety controlled by some polysaccharide materials as chitosan.The effect of different dipping treatments viz; control (tap water for 5 min.) and chitosan at 0.5 and 1% for 5 min. as well as nano chitosan at 25 and 50 ppm for 5 min. on quality of full and cutting pods of snap bean (Phaseolus vulgaris L.) cv. Paulista during cold storage.So, two experiments were conducted at Agric. Res. Farm, El-Kassasien Hort. Res. Station, Ismalia Governorate, and Handling Lab., Hort. Dept., Fac. Agric., Zagazig University, Egypt during the two autumn consecutive seasons of 2016/ 2017 and 2017/2018.Pods weight loss (%), general appearance score, total chlorophyll content (SPAD unit), firmness (g/cm2), total soluble solids (TSS as Brix°), crude fiber (%), total microbial count (log 10 CFU/g), polyphenol oxidase activity (unit/g as fresh weight), total phenol content (mg/g as fresh weight) and crude protein (%) of snap bean pods were evaluated at 0, 4, 8, 12 and 16 days of storage at 4°C and 90% relative humidity.The obtained results referred to that the dipping full pods in the solutions of chitosan at 1% or nano chitosan at 50 and/or 25 ppm presented more effective preservative effect on decreasing weight loss percentage, total soluble solids, crude fiber, total microbial count and polyphenol oxidase activity and maintained pod quality and gave pods with good appearance, total chlorophyll, firmness and total phenolic after 12 days of storage at 4ºC and 90% relative humidity than other treatments or control during different cold storage periods.
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Claims 4
Claim · model-written summary
The effective dips decreased pod weight loss, total soluble solids and crude fiber relative to other treatments or control.
- Taxon
- snap bean (Phaseolus vulgaris L.)
Phaseolus vulgarise1 - Organ / stage
- full podse0
- Treatment
- chitosan at 1%e0
- Outcome
- weight loss percentage, total soluble solids, crude fibere0
- Direction
- decreasinge0
- Qualifier
- after 12 days of storage at 4ºC and 90% relative humiditye0
- Comparator
- other treatments or controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dipping full pods in the solutions of chitosan at 1% or nano chitosan at 50 and/or 25 ppm presented more effective preservative effect on decreasing weight loss percentage, total soluble solids, crude fiber, total microbial count and polyphenol oxidase activity and maintained pod quality and gave pods with good appearance, total chlorophyll, firmness and total phenolic after 12 days of storage at 4ºC and 90% relative humidity than other treatments or control during different cold storage periods.”
e1“snap bean (Phaseolus vulgaris L.) cv. Paulista”
Claim · model-written summary
The effective dips decreased total microbial count and polyphenol oxidase activity relative to other treatments or control.
- Taxon
- snap bean (Phaseolus vulgaris L.)Phaseolus vulgarise1
- Organ / stage
- full podse0
- Treatment
- nano chitosan at 50 and/or 25 ppme0
- Outcome
- total microbial count and polyphenol oxidase activitye0
- Direction
- decreasinge0
- Comparator
- other treatments or controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dipping full pods in the solutions of chitosan at 1% or nano chitosan at 50 and/or 25 ppm presented more effective preservative effect on decreasing weight loss percentage, total soluble solids, crude fiber, total microbial count and polyphenol oxidase activity and maintained pod quality and gave pods with good appearance, total chlorophyll, firmness and total phenolic after 12 days of storage at 4ºC and 90% relative humidity than other treatments or control during different cold storage periods.”
e1“snap bean (Phaseolus vulgaris L.) cv. Paulista”
Claim · model-written summary
The effective dips maintained pod quality and good appearance, chlorophyll and firmness after 12 days of storage.
- Taxon
- snap bean (Phaseolus vulgaris L.)Phaseolus vulgarise1
- Treatment
- chitosan at 1%e0
- Outcome
- pod quality and gave pods with good appearance, total chlorophyll, firmnesse0
- Direction
- maintainede0
- Qualifier
- after 12 days of storage at 4ºC and 90% relative humiditye0
- Comparator
- other treatments or controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dipping full pods in the solutions of chitosan at 1% or nano chitosan at 50 and/or 25 ppm presented more effective preservative effect on decreasing weight loss percentage, total soluble solids, crude fiber, total microbial count and polyphenol oxidase activity and maintained pod quality and gave pods with good appearance, total chlorophyll, firmness and total phenolic after 12 days of storage at 4ºC and 90% relative humidity than other treatments or control during different cold storage periods.”
e1“snap bean (Phaseolus vulgaris L.) cv. Paulista”
Claim · model-written summary
The effective dips maintained total phenolic after 12 days of storage.
- Taxon
- snap bean (Phaseolus vulgaris L.)Phaseolus vulgarise1
- Treatment
- nano chitosan at 50 and/or 25 ppme0
- Outcome
- total phenolice0
- Direction
- maintainede0
- Qualifier
- after 12 days of storage at 4ºC and 90% relative humiditye0
- Comparator
- other treatments or controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dipping full pods in the solutions of chitosan at 1% or nano chitosan at 50 and/or 25 ppm presented more effective preservative effect on decreasing weight loss percentage, total soluble solids, crude fiber, total microbial count and polyphenol oxidase activity and maintained pod quality and gave pods with good appearance, total chlorophyll, firmness and total phenolic after 12 days of storage at 4ºC and 90% relative humidity than other treatments or control during different cold storage periods.”
e1“snap bean (Phaseolus vulgaris L.) cv. Paulista”
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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.