Chapter - Food Spoilage Flashcards
this results from growth of microbes in food
food spoilage
factors related to the food itself
intrinsic factors
environment where food is stored
extrinsic factors
proteolysis and anaerobic breakdown of proteins foul smelling amine compounds
putrefaction
short chained fatty acid production
butter
impacts make up of microbial community and therefore types of chemical reactions that occur when microbes grow in food
pH
lower redox means more blank and blank
bacteria, microbes
fruit and vegetable antimicrobial substance
coumarins
cows milk and eggs have this for antimicrobial substance
lysozyme
garlic has this for antimicrobial
allicin
black and green tea has this for antimicrobial
polyphenols
lower temperatures blank microbial growth
retard
higher levels of humidity blank microbial growth
promote
oxygen blank microbial growth
promotes
kills pathogens and substantially reduces number of spoilage organisms
pasteurization
chemical agents generally recognized as safe
GRAS
GRAS agents
organic acids, sulfite, ehylene oxide gas, ethyl formate
this GRAS inhibits spore formation in meats
sodium nitrates
preserve food by applying pressure without changes in temperature
high hydrostatic pressure
using ionizing radiation to extend shelf life or sterilize meat, seafoods, fruits, and vegetables
radappertization
radiation kills microbes in moist foods by producing blank from blank
peroxide, water
peroxides blank cellular constituents
oxidize
bacteriocidal proteins active against related species
bacteriocins
there how many food born diseases per year
48 mill… 1/6
two main types of food disease
food borne disease, food intoxication
food disease that results from ingestion of pathogen followed by growth
food borne disease
ingestion of toxins in foods in which microbes hhave grown
food borne intoxication
example of food borne intoxication
listeria
carcinogens produced in fungus infected grains and nut products
aflatoxin
carcinogens produced in fungus infected corn
fumonisins
these contaminate fish and shelffish and are fungus derived
algal toxins