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| 电泳图表明南瓜蛋白质分子量在39.20kDa和21.33kDa左右。在等电点处溶解度最低为9.4%,南瓜蛋白起泡性和乳化性与溶解度密切相关,在等电点处,起泡性最低为59%,溶液pH高于或低于等电点都有利于起泡性的增加,而泡沫稳定性与之相反,在等电点处泡沫稳定性最高达到92%,pH升高或降低都会对泡沫稳定性产生不利影响。并且随着蛋白质浓度的增加,起泡性和泡沫稳定性也随之增大;乳化性与起泡性趋势一致,在等电点处乳化性最低为17%,乳化稳定性随着pH的升高而增大。 |
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2楼2011-04-10 16:49:46
3楼2011-04-10 16:58:10
| of which the foamability and emulsibility are closely related to the solubility.In the isoelectric point,the foamability reachs a minimum of 59%. when pH is above or below the isoelectric point, the foamability can increase ,while the foaming stability acts in contrast,which in the isoelectric point rise up to 92%. It will have a negative impact on foam stability to increase or decrease pH. And with the increase of protein concentration, the foaming capacity and foaming stability also increase; the foamability and emulsibility have the same trend, with the lowest emulsion(17%) in the isoelectric point, emulsion stability goes with the increase of the pH. |
4楼2011-04-10 17:11:44










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