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Monitoring the infection process of Rhizopus stolonifer on strawberry fruit during storage using films based on chitosan/polyvinyl alcohol/polyvinylpyrrolidone and plant extracts
- Source :
- International journal of biological macromolecules. 182
- Publication Year :
- 2020
-
Abstract
- Different formulations based on nanoparticles of chitosan-plant extracts were evaluated to detect the infection process from the earliest stage of the fungus Rhizopus stolonifer on strawberry fruit during storage. Chitosan/polyvinyl alcohol (Ch/PVA) and chitosan/polyvinylpyrrolidone (Ch/PVP) films enriched with nanoparticles (NPs) of chitosan blended with plant extracts were prepared. They were placed inside a plastic package containing inoculated fruits and stored at 25 °C for 72 h. The thickness values of the films were in the range of 0.10 to 0.25 mm. All samples showed a maximum absorbance peak of about 300-320 nm; however, the Ch/PVP films enriched with NPs of chitosan and 10% of radish extract had an evident decrease in the optical absorbance as the fungal infection progressed. Additionally, as observed by scanning electron microscopy, the cross-section and surface morphology of films were not modified during storage, and the growth of R. stolonifer was evident after 48 h. Therefore, the Ch/PVP films enriched with chitosan NPs blended with 10% radish extract could be a reliable indicator of this fungus's growth.
- Subjects :
- Scanning electron microscope
Nanoparticle
macromolecular substances
02 engineering and technology
Biochemistry
Polyvinyl alcohol
Fragaria
Nanocomposites
Raphanus
Chitosan
Absorbance
03 medical and health sciences
chemistry.chemical_compound
Structural Biology
medicine
Molecular Biology
030304 developmental biology
0303 health sciences
Polyvinylpyrrolidone
Plant Extracts
technology, industry, and agriculture
Food Packaging
food and beverages
Povidone
General Medicine
021001 nanoscience & nanotechnology
Smart Materials
chemistry
Fruit
Polyvinyl Alcohol
Rhizopus stolonifer
0210 nano-technology
Radish extract
Rhizopus
Nuclear chemistry
medicine.drug
Subjects
Details
- ISSN :
- 18790003
- Volume :
- 182
- Database :
- OpenAIRE
- Journal :
- International journal of biological macromolecules
- Accession number :
- edsair.doi.dedup.....346a904341fdf8635e8687b965891b4f