effects of proteins present in camel milk, reduction of
yogurt pH, influence of storage temperature, and the
production of antimicrobial compounds besides acid
by LAB. The inhibitory effects of proteins present in
camel milk may also have reduced the viability of E.
coli O157:H7 in the absence of LAB in camel milk (at
a pH value of 6.9). It has been reported that E. coli
O157:H7 is able to grow in pasteurized cow milk at
12°C (Arias et al., 2001). However, camel milk contains
significantly higher concentrations of whey proteins,
including lysozyme, LF, and IgG than cow or buffalo
milk (Elagamy, 2000). Furthermore, these proteins in
camel milk are markedly more heat resistant than their
counterparts in cow or buffalo milk, although the heat
effects of proteins present in camel milk, reduction ofyogurt pH, influence of storage temperature, and theproduction of antimicrobial compounds besides acidby LAB. The inhibitory effects of proteins present incamel milk may also have reduced the viability of E.coli O157:H7 in the absence of LAB in camel milk (ata pH value of 6.9). It has been reported that E. coliO157:H7 is able to grow in pasteurized cow milk at12°C (Arias et al., 2001). However, camel milk containssignificantly higher concentrations of whey proteins,including lysozyme, LF, and IgG than cow or buffalomilk (Elagamy, 2000). Furthermore, these proteins incamel milk are markedly more heat resistant than theircounterparts in cow or buffalo milk, although the heat
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