Sterile Food
Sterile Food - Related Videos
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...
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...
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...
12:09
Studying Food Reward and Motivation in Humans
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Cited by 9 •
2014
This article describes a set of methods for the measurement of food related motivation and food related goal values in humans.
01:30
Methods of Sterilization II: Chemical Methods
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2023
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements. Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
FAQs
These approaches target different microbial structures or functions. Heat can damage membranes and proteins, irradiation can injure nucleic acids, and aseptic processing limits microbial introduction during handling. Their shared purpose is to reduce viable microorganisms while retaining enough nutritional value for the study organism, allowing investigators to examine development under controlled microbial conditions.
Excessive processing may alter the food in ways that affect the organism independently of microbial exposure, whereas insufficient treatment can leave viable contaminants. Maintaining this balance helps ensure that changes in growth, tissue formation, or other developmental outcomes reflect the biological question rather than nutrient loss or processing damage.
It provides a common dietary foundation for experiments in which microbial exposure is absent, restricted, or deliberately controlled. By reducing an uncontrolled microbial source, researchers can compare developmental outcomes across conditions and better separate effects associated with host biology, nutrition, and host–microbe interactions.
Preparation should use a validated sterilization approach and careful quality control to verify that the food remains appropriate for the study organism and does not introduce contamination. Investigators also need to consider whether processing has changed nutritional value, because an altered diet could create developmental effects that are mistakenly attributed to microorganisms.
Researchers use it when rearing embryos, larvae, or animals under germ-free or microbiota-controlled conditions. This setup is useful for examining how microbial exposure relates to nutrition, growth, tissue formation, and developmental outcomes. It also supports studies that need to distinguish direct host processes from effects associated with microbial communities.
Observed differences should be evaluated against both microbial exposure and possible consequences of food processing. Sterile diets help isolate microbial influences, but careful controls are needed to determine whether changes in growth, tissue formation, or other traits arise from the absence of microorganisms, altered nutrition, or contamination during the experiment.