cloning and biotech Flashcards
lactobacillus bulgaricus and streptococcus thermophilus are what type of bacteria?
lactic acid bacteria
what does acidity do to the milk proteins?
dentures causing them to coagulate
what else does fermentation add to the milk?
flavours
what are probiotics?
stimulate immune system and improve digestion of lactose
what is the bacterium used in cheese making?
lactobassilicus
what sugar does this bacterium feed on (lactobacillus)?
lactose
what is the purpose of lactobacillus in cheese making?
prevent growth of unwanted bacteria
where does rennet come from naturally?
stomach of young mammals
what enzyme does rennet contain?
chymosin
what is the milk protein called?
caesin
what is the soluble form of caesin?
kappa- caesin
what does chymosin do to kappa- caesin?
converts to casein which is insoluable
which ions bind the casein molecules together?
Ca 2+
name three methods for separating the curd from the whey
cutting, stirring and heating
what is added to produce blue cheese?
penecillin