food & drink from microorganisms Flashcards
the theroy of biogenesis has been what over the last years
developing
people think that life could ……… ……….. from …. ………. materials
spontaneously generate
non living
living things are created my other
living things
this is the theroy of
biogenesis
most cheese is made up of ……….
bacteria
what is the first step to it
a culture od bacteria is added to milk
the second step
the bacteria produces solid curds in the milk
the third step
the curds are seperated from the liquid whey
the 4th step
more bacteria are sometimes added to the curds and the whole lot is left to rippen for a while
the 5th step
molds are added to give blue cheese its colour and taste
youhurt is made using
bacteria
what is bacteria used for in youhurt production
to clot milk during manufactoring
step one of yoghurt production
the milk is often heat treated first to kill any bacteria that may be in it then cooled
step 2 of yoghurt production is
a starter culture of bacteria is then added the bacteria is ferment the lactouse sugar to lactic acid
step 3 of yoghurt production is
the acid causes the milk to clot and solidify into yoghurt