Next Article in Journal
Effect of Deposition Pressure on the Microstructure and Optical Band Gap of Molybdenum Disulfide Films Prepared by Magnetron Sputtering
Next Article in Special Issue
Novel Edible Coating with Antioxidant and Antimicrobial Activities Based on Whey Protein Isolate Nanofibrils and Carvacrol and Its Application on Fresh-Cut Cheese
Previous Article in Journal
Structure of Highly Porous Silicon Dioxide Thin Film: Results of Atomistic Simulation
Previous Article in Special Issue
Formulation and Characterization of Edible Films Based on Organic Mucilage from Mexican Opuntia ficus-indica
Open AccessFeature PaperArticle

Biopolymer Coatings as Alternative to Modified Atmosphere Packaging for Shelf Life Extension of Minimally Processed Apples

1
Centre of Food innovation and Development in the Food Industry, Via Università 100, 80055 Portici (NA), Italy
2
Department of Agricultural Science, Via Università 133, 80055 Portici (NA), Italy
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(9), 569; https://doi.org/10.3390/coatings9090569
Received: 16 August 2019 / Revised: 3 September 2019 / Accepted: 4 September 2019 / Published: 6 September 2019
(This article belongs to the Special Issue Edible Films and Coatings: Fundamentals and Applications)
The effect of caseinate/chitosan blend on the shelf life of minimally processed apples was studied. In the first phase of the work, the effect of the biopolymer coating on the respiration rate of the minimally processed apples was studied as function of gas composition (5%, 10%, 21% of O2 with N2 as balance at 5 °C) and temperature (5 °C, 10 °C at 5% of O2 with N2 as balance). In the second phase, the shelf life of the packed product was studied during storage at 5 °C. The gas composition (O2%-CO2%) in the package headspace, relative humidity, pH, hardness, color and antioxidant capacity of the product were monitored after 0, 1, 4, 7, 11, and 14 days. The coating effectively reduced respiration rate of the product when oxygen was over 10%. In the presence of the coating, the reduction of oxygen did not affect the respiration rate. At 5% of O2, the respiration rate decreased by 50% by changing the temperature from 10 °C to 5 °C. Shelf life study showed that the chitosan—caseinate coating was able to preserve the mechanical properties and the antioxidant capacity of the product during storage by increasing the shelf life by 7 days to 11 days at 5 °C. View Full-Text
Keywords: chitosan; sodium caseinate; respiration rate; mechanical properties; antioxidant capacity; minimally processed apple chitosan; sodium caseinate; respiration rate; mechanical properties; antioxidant capacity; minimally processed apple
Show Figures

Figure 1

MDPI and ACS Style

Volpe, S.; Cavella, S.; Torrieri, E. Biopolymer Coatings as Alternative to Modified Atmosphere Packaging for Shelf Life Extension of Minimally Processed Apples. Coatings 2019, 9, 569.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop