Abstract
Chitin and chitosan are being used in the preservation of fruits as a natural preservative. This study was conducted to extend the shelf-life of orange using chitosan. Initial molecular weight of chitosan was 1.6 X 10 6 Da which was reduced to 2.7 X 104 Da through stepwise pretreatments using alkali, acid and H2O2. and at this level, the degree of deacetylation (DD) was 70%. Chemical treatments deproteinated and decalcified the chitin. Chitosan, the deacetylated form of chitin, was dissolved in lactic acid and then irradiated to deacetylate molecular weight for using in the preservation of orange. To conduct the experiment, seven different strains of bacteria were isolated from spoiled orange and it was found that chitosan was more effective to inhibit the growth of these bacteria. During preservation, non-irradiated orange coated with 500 ppm chitosan both in polythene bag and not in polythene bag showed shelf-life extension up to a certain time. On the other hand, the irradiated orange, coated with 500ppm solution of chitosan both in polythene bag and not in polythene bag showed an extended shelf-life up to 12 – 20 days, which were better than the non-irradiated orange.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Chitosan inhibited growth of bacteria isolated from spoiled orange.
Not reportedComparator
Verbatim
e0“seven different strains of bacteria were isolated from spoiled orange and it was found that chitosan was more effective to inhibit the growth of these bacteria”
Claim · model-written summary
Chitosan coating extended shelf life of nonirradiated oranges with and without polythene bags.
- Taxon
- orangee0
- Treatment
- coated with 500 ppm chitosane0
- Outcome
- shelf-lifee0
- Direction
- extensione0
- Qualifier
- both in polythene bag and not in polythene bage0
Not reportedComparator
Verbatim
e0“non-irradiated orange coated with 500 ppm chitosan both in polythene bag and not in polythene bag showed shelf-life extension up to a certain time”
Claim · model-written summary
Irradiated oranges coated with chitosan lasted 12 to 20 days and outperformed nonirradiated oranges.
Verbatim
e0“the irradiated orange, coated with 500ppm solution of chitosan both in polythene bag and not in polythene bag showed an extended shelf-life up to 12 – 20 days, which were better than the non-irradiated orange”
The same questions in other papers
chitosan · quality: postharvest · Citrus sinensis (sweet orange)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →radiation · quality: postharvest · Citrus sinensis (sweet orange)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- 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.