Theory Flashcards
food hygiene
everything we do to make sure the food is free from contamination
food safety
involves protecting food from anything that could cause harm to the consumer
contamination
the presence of any unwanted microorganisms of foreign matter. ilness or injury can occur if food is contminated
ways to help with food hygiene
wash hands regularly cross contamination wash fruit and veg tie hair back use hot water to clean
conditions needed for growth
they all need warm and moist conditions
they all need a food supply
yeast needs time to reproduce
mould ansd yeast need oxygen to grow
enzymic browning
enzymes can control reactions in food. when they are acticvated they change the food
what is a pathogen
harmful bacteria
what is the F A T T O M
F (food)
A (acidity - pH neutrul)
T (temperature - 5/6 degreed)
T (time - x2 every 20 minutes)
O (oxygen)
M (moisture)
What bacteria comes from pre cooked meats
listeria
e coli
undercooked meats
salmonella
chicken, eggs
what bacteria comes from poultry, beef
clostridium
staphylococcus
meat, poultry
onnset
the amount of time it takes for symptoms to show
symptoms
features of the disease eg vomit
sources
where you pick up the bacteria that gives you the disease
what does a very cold fridge stop?
the growth of enzymes
fridge rating
- : -6, storage 1 week
- *: -12, storage 1 month
- **: -18, storage 3 months
- ***: -18 - -25, storage up to 1 year
cupboard storage
bread, cereal, oil, flour, pasta, sugar, tins, rice, crisps, biscuits
dry storage
- stored between 10 - 15 degrees
- kept out of direct sunlight
- rotated so old is used first
moulds
moulds are fungi. they produce spores which travel through the air and land on the foods. normally green, white, blue or black in colour
yeasts
found in soil, air and on skins of fruits. yeasts are fungi, they produce by budding amd need oxygen to reproduce, waem water to activate. killed at 100 degrees
bacteria
find bacteria everywhere, reproduce every 20 minutes. love 37. produce toxic poisins that give you food poisoning but doesn’t like acidic food
what do we need protein for?
- growth
- repairs body tissue
- forms enzymes that metabolise
- forms hormones which regulates bodily functions