scholarly journals A Study on Cold Plasma for Food Preservation

Author(s):  
T. Raviteja ◽  
Susan Kanthi Dayam ◽  
J. Yashwanth

Cold plasma is an electrically energized matter composed of highly reactive species which includes molecules of charged and gas with minute particle in the form of negative and positive ions, photons electrons, free radicals at room temperature. It is an emerging technology in non-thermal food preservation in the application of sterilization. An increase in the plasma-based treatment for food is employed to inactivate the food borne pathogens seen in the recent years. The present study recollects the activity of the plasma agents on the microbe population, surface decontamination of the raw produce in the food processing and future novelty in food technology.

2020 ◽  
Vol 53 (20) ◽  
pp. 204003 ◽  
Author(s):  
Jin-Young Han ◽  
Won-Jae Song ◽  
Sangheum Eom ◽  
Seong Bong Kim ◽  
Dong-Hyun Kang

2006 ◽  
Vol 73 (1) ◽  
pp. 211-217 ◽  
Author(s):  
M. Ann S. McMahon ◽  
Jiru Xu ◽  
John E. Moore ◽  
Ian S. Blair ◽  
David A. McDowell

ABSTRACT This study investigated the possibility that sublethal food preservation stresses (high or low temperature and osmotic and pH stress) can lead to changes in the nature and scale of antibiotic resistance (ABR) expressed by three food-related pathogens (Escherichia coli, Salmonella enterica serovar Typhimurium, and Staphylococcus aureus). The study found that some sublethal stresses significantly altered antibiotic resistance. Incubation at sublethal high temperature (45°C) decreased ABR. Incubation under increased salt (>4.5%) or reduced pH (<5.0) conditions increased ABR. Some of the pathogens continued to express higher levels of ABR after removal of stress, suggesting that in some cases the applied sublethal stress had induced stable increases in ABR. These results indicate that increased use of bacteriostatic (sublethal), rather than bactericidal (lethal), food preservation systems may be contributing to the development and dissemination of ABR among important food-borne pathogens.


Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2418
Author(s):  
Hwan Hee Yu ◽  
Young-Wook Chin ◽  
Hyun-Dong Paik

Meat and meat products are excellent sources of nutrients for humans; however, they also provide a favorable environment for microbial growth. To prevent the microbiological contamination of livestock foods, synthetic preservatives, including nitrites, nitrates, and sorbates, have been widely used in the food industry due to their low cost and strong antibacterial activity. Use of synthetic chemical preservatives is recently being considered by customers due to concerns related to negative health issues. Therefore, the demand for natural substances as food preservatives has increased with the use of plant-derived and animal-derived products, and microbial metabolites. These natural preservatives inhibit the growth of spoilage microorganisms or food-borne pathogens by increasing the permeability of microbial cell membranes, interruption of protein synthesis, and cell metabolism. Natural preservatives can extend the shelf-life and inhibit the growth of microorganisms. However, they can also influence food sensory properties, including the flavor, taste, color, texture, and acceptability of food. To increase the applicability of natural preservatives, a number of strategies, including combinations of different preservatives or food preservation methods, such as active packaging systems and encapsulation, have been explored. This review summarizes the current applications of natural preservatives for meat and meat products.


2016 ◽  
Vol 31 (2) ◽  
pp. 276-282
Author(s):  
Heba Badr ◽  
Nayera AlAtfeehy ◽  
Soad Nasef

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