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Results have shown that the effect of sucrose on gelation can vary such that effects can be completely reversed depending on the gelation route used. During acid gelation, addition of up to 30% (wt/wt) sucrose causes gels to form more rapidly and at higher pH values, and to have higher viscoelastic moduli and a more homogeneous microstructure than those without sucrose. By contrast, gels formed by renneting in the presence of sucrose are weaker and have longer gelation times. It is proposed that sucrose reduces solvent quality and causes the collapse of the ¡°hairy¡± ¦Ê-casein brush on the surface of the casein micelles. This may explain why sucrose increases the possibility of gel formation during acidification and reduces the degree of ¦Ê-casein hydrolysis during renneting. |
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Carena: ½ð±Ò+2, ¸ÐлӦÖú 2012-12-21 13:51:51
qwky2010: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл 2012-12-21 16:05:52
Carena: ½ð±Ò+2, ¸ÐлӦÖú 2012-12-21 13:51:51
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