Food Safety Sterilization
Food Safety Sterilization - Related Videos
06:12
Quasi-metagenomic Analysis of Salmonella from Food and Environmental Samples
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Cited by 12 •
2018
Here, we present a protocol to prepare DNA samples from food and environmental microbiomes for concerted detection and subtyping of Salmonella through quasimetagenomic sequencing. The combined use of culture enrichment, immunomagnetic separation (IMS), and multiple displacement amplification (MDA) allows effective concentration of Salmonella genomic DNA from food and environmental...
12:45
Testing For Genetically Modified Foods
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Genetic modification of foods has been a controversial issue due to debated concerns over health and environmental safety. This experiment demonstrates technical understanding of how food DNA is genetically identified, allowing for educated decision making about the safety and potential dangers of using genetically modified organisms (GMOs) in food supplies. Polymerase Chain Reaction (PCR) is used to amplify food DNA...
12:29
Sterile Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research. The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting...
04:53
Electrical Safety
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2023
Robert M. Rioux & Suprita Jharimune, Pennsylvania State University, University Park, PA Among the many hazards present in the laboratory, electrical hazards are one of the most common we must be cognizant of since most of the laboratory equipment we use requires electricity for operation. Improper handling or operation of electrical devices might lead to electric shock with the potential risk of injury or even death. Electric sparks can lead to fire or explosion (since many flammable...
01:30
Cleaning, Sterilization, and Disinfection
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2023
Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease. Cleaning The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
FAQs
Different treatments produce microbial death through different biological injuries. Heat and pressure can damage essential cellular structures and denature proteins, while radiation and chemical agents can disrupt microbial DNA or other vital components. Comparing these mechanisms helps explain why a selected treatment may be effective against particular contaminants and why process conditions must be validated rather than assumed.
Resistant spores require particular attention because eliminating ordinary viable cells does not necessarily demonstrate that the most persistent biological forms have been controlled. Food safety sterilization therefore depends on treatment intensity and exposure time sufficient for the intended target, together with consideration of the food matrix. This distinction matters when assessing safety, spoilage risk, and shelf stability.
The food matrix can influence how consistently a treatment reaches and affects microorganisms. Its properties must therefore be considered alongside treatment intensity and exposure time when conditions are selected. A process that appears adequate in one food or material may not produce the same microbial outcome in another, making matrix-specific validation important for reliable safety and contamination control.
Heat and pressure primarily act by damaging cellular structures and denaturing proteins, whereas radiation and chemical agents can disrupt microbial DNA. These mechanisms provide different routes to reducing viable microorganisms, including pathogens and potentially resistant spores. The choice among them depends on the intended food or food-contact material and on treatment conditions that achieve the required microbial control.
Validation connects the selected treatment with measurable microbial survival under the intended conditions. Researchers examine treatment intensity, exposure time, and the relevant food matrix, then evaluate whether viable microorganisms remain. This approach supports evidence-based processing decisions, helps determine whether resistant forms have been addressed, and provides a basis for consistent contamination control rather than relying only on nominal settings.
Treatment can be directed not only at food but also at materials that contact it, helping reduce the chance that packaging or other contact surfaces introduce contamination. In food science, this supports contamination control and contributes to shelf-stable products when the treatment is appropriately validated. The same principle also helps researchers assess microbial survival on relevant materials.
In biology and food science, sterilization supports shelf-stable products, safe packaging, laboratory analysis, and contamination control. Researchers can use it to evaluate how microorganisms survive defined treatment conditions and to validate processing conditions. These applications connect cellular damage and microbial survival with practical goals, including reducing disease risk, limiting spoilage, and protecting public health.