Naslov
Fresh-Cut Apples Spoilage and Predictive Microbial Growth under Modified Atmosphere Packaging

Autori
Putnik, Predrag ; Bursać Kovačević, Danijela

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Food Safety and Protection

Urednik/ci
V Ravishankar, Rai ; Jamuna, A Bai

Izdavač
CRC Press

Grad
Boca Raton (FL)

Godina
2017

Raspon stranica
29-46

ISBN
9781498762878

Ključne riječi
ready-to-eat apple browning ; modified atmosphere ; fresh-cut respiration ; mathematical modeling ; spoilage

Sažetak
The worldwide consumption of the fruits and vegetables is constantly increasing likely due to promotion of nutrition principles that can be found in various Dietary Guidelines issued by various governments (USA, EU, etc.). Such guidelines promote consumption of fresh produce in order to improve health and decrease diet-related diseases. Fresh-cut fruits and vegetables became increasingly popular due to their freshness, convenience, and health benefits. Accordingly, fresh-cut industry became growing segment of the food industry with tendency to increase the market share in the future. Apples (Malus domestica) are commonly consumed fruits positioned on a 2nd place as the most produced fruits worldwide. According to the FAO in 2013 total worldwide production of apples was 80 million tons. Industrial processing of fresh-cut apples induce plant tissue injury with various degenerative changes that promote microbial and enzymatic activity, respiration, and other negative influences, all with tendency to shorten the length of the storage. The length of the storage is one of the most important economic factors for the fresh-cut production during which producers need to guarantee product’s safety and quality for required sales period. Otherwise apples may lose their market value, as they exhibit microbial appearance and sensory properties not safe and/or appealing to the consumer. Fresh-cut fruit spoilage has two origins, one internal (e.g. enzymatic and metabolic activity of fruit) and external (microbial contamination). Therefore, preventing microbial contamination of fresh-cut products is one of the primary concerns and major limiting factor in extending the storage of fresh-cut apples. Modified atmosphere packaging (MAP) is one of the most popular approaches to extend the short storage in fresh-cut apples. The MAP is based on the concept that selective packaging barrier with different permeances for gases will prevent anaerobic respiration by modifying atmosphere within the package. Additionally, bacterial growth can be inhibited by altering volumetric concentration of modified atmosphere gases within the package. Unfortunately, the role of modified atmosphere gases in respiration process is not yet clarified as respiration process is very complex and influenced by numerous factors. For instance some of the important factors include temperature, time, concentration of added gases, size of the package, and mass of the packaged produce. Complexity further multiplies with addition of the other intricate influences such as microbial growth of various bacteria or other microorganisms. Microbial modeling and development of predictive models for food microbiology is a good solution able to give estimate of naturally occurring processes from large number of parameters. By constructing mathematical equations, predictive modeling may lower manufacturing costs and improve food production. Currently, semifundamental Michaelis–Menten models and fundamental approaches are used for such purpose. Semifundamental modeling is convenient but offers simplification of the naturally occurring process as it assumes that some variables are constants or their influences are insignificant. Alternatively, fundamental modeling is complex but more flexible, precise and tailored for each particular set of industrial circumstances. In other words, fundamental modeling can be custom-made for each particular fresh produce and corresponding industrial production. This chapter will discuss topics of the fresh-cut packaging in modified atmosphere and factors that influence the length of its storage, with the main focus on the construction of predictive microbial models useful for prevention of fresh-cut apple spoilage. Fresh-Cut Apples Spoilage and Predictive Microbial Growth under Modified Atmosphere Packaging. Available from: https://www.researchgate.net/publication/317339370_Fresh-Cut_Apples_Spoilage_and_Predictive_Microbial_Growth_under_Modified_Atmosphere_Packaging [accessed Jul 18, 2017].

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

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