Biological Hazards Food Preservatives Destruction of Microorganisms Food Sanitation Random
100
prevent cross contamination
prevent microbial growth
destruction of microorganisms
3 ways to control biological hazards
100
non toxic, heat stable
produced naturally
no off flavor/odor
desirable properties or food preservatives
100
145F
165F
160F
145F
what are the minimum internal temperatures of ground meats, poultry, egg dishes and fish
100
provide a medium and nutrients for growth
protect pathogens from contact w/chemical sanitizers
can reduce effectiveness of sanitizers
why should soils be removed
100
enhance detergency; emulsifying, saponifying and peptizing ability
can damage skin/organs, corrosive
what are advantages and disadvantages to using alkaline cleaning compounds
200
kill them
keep them out
keep them from growing
what are the 3 k's
200
pKa & PC
what are the 2 major properties of organic acids that should be considered for use
200
pasteurization- destroys FBP, not spores
sterilization- destroys viable organisms, kills spores
what is the difference between pasteurization and sterilization
200
wetting, saponifying, peptizing, dissolving soluble soils, dispersing insoluble materials, emulsifying, sequestering calcium and magnesium salts
effective cleaning agents for all soil types should have
200
iodophors; 3-5 pH
the most active antimicrobial agents in iodine compounds; most active pH
300
raw ingredients
processing environment
2 major sources of cross contamination
300
bio- natural/controlled microflora
natural- naturally produced antimicrobial agents
what is the difference between biopreservatives and natural preservatives
300
direct- breaks molecular bonds in DNA/RNA, reproductive death in microorganisms
indirect- denaturation of enzymes, cell membrane alter
what are the inactivation modes for irradiation
300
sanitizer efficiency test
sanitizers should produce 99.99% reduction of 75-125 million E.coli and Staph within 30 seconds
what is the chambers test
300
quaternary ammonium compounds
ammonium salts with some or all hydrogen atom substituted by alkyl groups
what are QAC
400
validation and verification of supplier capabilities
use of standard methods for specifications and sampling plans
control measures for high risk ingredients
400
incorporation of specific food additives into packaging to extend shelf life and quality
what is active packaging
400
utilization of high pressure: 200-1000MPa
what is high hydrostatic pressure
400
exposure time, temperature, concentration, surface characteristics, cleanliness, pH, water hardness, microbial type/load
what are physical-chemical factors affecting the effectiveness of sanitizers
400
modified atmospheric packaging- removal/replacement of atmosphere surrounding product before sealing; O2, CO2, CO, N2
what is MAP and what are the common gases used
500
site selection/preparation (water, toxic waste, disposal)
building construction (walls, floors, ceiling, doors)
facility design (product flow, personnel moving route)
what are the facility design considerations
500
no, vacuum packaging can allow the growth of anaerobic pathogens so you need to use additional measures (MAP)
what is vacuum packaging, is it the same as MAP
500
utilization of atmospheric plasmas containing high levels of bacteriocidal molecules
what is atmospheric plasma technology
500
FDA
USDA
EPA
what government agencies regulate chemical sanitizers
500
reduce water activity, change pH, denature cellular proteins, induces temperature shock, causes metabolic injury in cells
what are the effects of freezing on microbial growth






Control of Foodborne Hazards

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