卵清蛋白（OVA）或乳清蛋白浓缩物（WPC）预吸附对后续OVA或WPC在加热不锈钢表面结垢的影响。
The effect of pre-adsorption of OVA or WPC on subsequent OVA or WPC fouling on heated stainless steel surface.
作者信息
Lv Huiting, Huang Song, Mercadé-Prieto Ruben, Wu Xue E, Chen Xiao Dong
机构信息
Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian Province, China.
Suzhou Key Lab of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou Industrial, Jiangsu Province, China.
出版信息
Colloids Surf B Biointerfaces. 2015 May 1;129:154-60. doi: 10.1016/j.colsurfb.2015.03.042. Epub 2015 Mar 26.
Fouling on the heat exchanger surface during food processing has been researched extensively due to its great importance in energy efficiency, product quality and food safety. The nature of heat exchanger surface has an effect on the initial deposition behavior and deposit removal behavior to some degree. Protein adsorption on surface is considered to be the initial stage in fouling. In the current study, protein 'pre-adsorption' at room temperature on stainless steel has been investigated as a means to influence the behavior of protein fouling at pasteurization temperatures. Pre-adsorption was carried out with whey protein concentrate (WPC) and ovalbumin (OVA), respectively, which reduced the fouling of OVA (∼20-30% energy saving in the processing time examined). However, the pre-adsorption had little effect on fouling of whey protein concentrate. Contact angles were measured to show the surface change due to protein pre-adsorption. Protein pre-adsorption made the surfaces more hydrophilic.
由于污垢在能源效率、产品质量和食品安全方面具有重要意义，因此食品加工过程中热交换器表面的污垢问题已得到广泛研究。热交换器表面的性质在一定程度上会影响初始沉积行为和沉积物去除行为。表面上的蛋白质吸附被认为是污垢形成的初始阶段。在当前的研究中，已经研究了室温下蛋白质在不锈钢上的“预吸附”，以此作为一种影响巴氏杀菌温度下蛋白质污垢行为的手段。分别用乳清蛋白浓缩物（WPC）和卵清蛋白（OVA）进行预吸附，这减少了OVA的污垢（在所研究的处理时间内节能约20 - 30%）。然而，预吸附对乳清蛋白浓缩物的污垢影响很小。通过测量接触角来显示由于蛋白质预吸附引起的表面变化。蛋白质预吸附使表面更具亲水性。
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