Shelf life analysis of a ricotta packaged using Modified Atmosphere Packaging or High Pressure Processing

2020 ◽  
Vol 16 (5-6) ◽  
Author(s):  
Stefanini Roberta ◽  
Vignali Giuseppe
Keyword(s):  
High Pressure ◽  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Experimental Tests ◽  
High Pressure Processing ◽  
Modified Atmosphere ◽  
Treatment Processes ◽  
Life Analysis ◽  
Lactic Bacteria ◽  
Microbiological Aspects

AbstractThe aim of this work is to evaluate several packaging and treatment processes for ricotta cheese in thermoformed trays. Shelf life has been evaluated considering microbiological aspects, colour variation and the quantity of Volatile Organic Compound (VOC). The first solution tested was Modified Atmosphere Packaging (MAP). Experimental tests were performed to evaluate not only the effect of a mixture of CO2, O2 and N2 in different percentages but also the deep of the trays (20, 30 or 40 mm). As a comparison, High Pressure Processing (HPP) at 6000 MPa for 3 min was applied to a second series of packaged ricottas. Microbiological results show that MAP preserves the product for 10 days, while HPP extends its shelf life for up to a month due to the lower levels of yeasts, moulds and lactic bacteria. In addition, the treatment preserves the ricotta's colour and VOCs.

Design and testing of Modified Atmosphere Packaging of cow’s ricotta

2018 ◽  
Author(s):  
Sara Ugolotti ◽  
Giuseppe Vignali
Keyword(s):  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Experimental Tests ◽  
Experimental Program ◽  
Human Consumption ◽  
Modified Atmosphere ◽  
Multilayer Material ◽  
Product Packaging ◽  
Special Instrument ◽  
Design And Testing

"The aim of this work is to evaluate the shelf life of cow’s ricotta under MAP (Modified Atmosphere Packaging). MAP is a packaging technique commonly used in the food industry in order to control the microbial growth. After the extraction of the air present in the headspace of the package, a mixture of CO2, O2 and N2 in different percentage is usually introduced before the packaging sealing. Based on these premises, a design of experimental tests has been created in order to evaluate the effect of each process parameters. To perform these test, it is also required the creation of thermoformed trays (made with a multilayer material using PET/EVOH/PE) in which the ricotta was inserted and packaged in a modified atmosphere. After the time intervals established in the experimental program, the analysis of the MAP was carried out using a special instrument (“Oxybaby” made by Witt SpA), able to measure the quantity of gas present in the headspace of the thermoformed trays. Then a statistical analysis of the obtained results was carried out. The results showed that after 10 days the product was edible for all types of atmosphere, but at 20 and, especially, at 30 days, even in the trays wrapped with CO2, the product was not acceptable for human consumption. One of the possible solutions, in order to lengthen the shelf life of cow’s ricotta, consists in the pre-sterilization of the trays before the product packaging with a solution of H2O2."

Effect of High Pressure Processing on the Shelf Life of Seasoned Squid

2011 ◽  
Vol 40 (8) ◽  
pp. 1136-1140 ◽  
Author(s):  
Jing-Yu Gou ◽  
Yun-Yun Zou ◽  
Geun-Pyo Choi ◽  
Young-Beom Park ◽  
Ju-Hee Ahn
Keyword(s):  
High Pressure ◽  
Shelf Life ◽  
High Pressure Processing

scholarly journals Capability of oxygen-scavenger sachets and modified atmosphere packaging to extend fresh barberry shelf life

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Razieh Niazmand ◽  
Samira Yeganehzad
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Shelf Life ◽  
Herbal Remedy ◽  
Physicochemical Characterization ◽  
Modified Atmosphere Packaging ◽  
Storage Period ◽  
Modified Atmosphere ◽  
Oxygen Scavenger

Abstract Background Barberry has long been used as an herbal remedy since ancient times which is found throughout temperate and subtropical regions of the world. Given the short harvesting season and limited shelf life of the barberry, we evaluated the possibility of using modified atmosphere packaging and oxygen-scavenger sachets to increase its storage period. For this purpose, the physicochemical characterization (antioxidant activity, anthocyanin, phenolic compounds, and ascorbic acid content, acidity, firmness, color, and decay incident) of fresh barberry samples packaged within different atmospheres was investigated over 4 weeks of storage at 4 and 25 °C. The barberries were packaged with low-density polyethylene/polyester (LDPE/PET) films under natural atmosphere (C), N2 gas (N), vacuum (V), or in the presence of an oxygen scavenger (OS). Results The results revealed that with increased storage period, the O2 and CO2 levels inside the packages decreased and increased, respectively. The antioxidant activity and amounts of anthocyanin, phenolic compounds, and ascorbic acid all decreased with increasing storage period. Among the studied atmospheres, the OS and, subsequently, V packages were most capable of maintaining the quality of fresh barberries, with the decay incidence being approximately 30 times lower inside these packages relative to the control. Increasing the storage temperature accelerated the intensity of chemical changes and decay across all samples. Conclusion The barberries inside the OS packages stored at 4 °C (and even at 25 °C) still had good sensory properties in terms of chemical properties, texture, and color after 4 weeks. Fortunately, it seems that this packaging technology makes the exportation and delayed consumption of the fresh barberry possible by maintaining its quality.

scholarly journals Active coating and modified-atmosphere packaging to extend the shelf life of Fior di Latte cheese

2009 ◽  
Vol 92 (3) ◽  
pp. 887-894 ◽  
Author(s):  
A. Conte ◽  
D. Gammariello ◽  
S. Di Giulio ◽  
M. Attanasio ◽  
M.A. Del Nobile
Keyword(s):  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Modified Atmosphere ◽  
Active Coating
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