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利用白酒丢糟制备蛋白发泡剂 被引量:1
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作者 王宇鹏 赵华 《中国酿造》 CAS 北大核心 2017年第8期85-89,共5页
使用白酒丢糟为原料制备蛋白发泡剂。以蛋白发泡剂的发泡性能为评价指标,优化白酒丢糟的水解条件和蛋白发泡剂的制备条件,确定最适的水解条件为:选用氧化钙和氢氧化钠组成的复合水解剂,其中氧化钙用量为丢糟质量的6%,并添加氢氧化钠使... 使用白酒丢糟为原料制备蛋白发泡剂。以蛋白发泡剂的发泡性能为评价指标,优化白酒丢糟的水解条件和蛋白发泡剂的制备条件,确定最适的水解条件为:选用氧化钙和氢氧化钠组成的复合水解剂,其中氧化钙用量为丢糟质量的6%,并添加氢氧化钠使得pH值为12.5,固液比为1∶4(g∶mL),温度120℃,时间3 h。此外蛋白发泡剂最佳制备条件为:脱钙率50%,浓缩前后蛋白液的pH均为7,浓缩温度和蛋白含量分别为36℃和3%,黄原胶添加量为0.15%。在此最佳条件下,最终得到蛋白发泡剂起泡体积为330 mL,稳泡体积为255 mL。 展开更多
关键词 白酒丢糟 蛋白发 体积 稳泡体积
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Bulk and bubble-scale experimental studies of influence of nanoparticles on foam stability 被引量:12
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作者 Nurudeen Yekeen Ahmad Kamal Idris +3 位作者 Muhammad A.Manan Ali Mohamed Samin Abdul Rahim Risal Tan Xin Kun 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第3期347-357,共11页
Influence of silicon oxide(SiO_2) and aluminum oxide(Al_2O_3) nanoparticles on the stability of nanoparticles and sodium dodecyl sulfate(SDS) mixed solution foams was studied at bulk and bubble-scale. Foam apparent vi... Influence of silicon oxide(SiO_2) and aluminum oxide(Al_2O_3) nanoparticles on the stability of nanoparticles and sodium dodecyl sulfate(SDS) mixed solution foams was studied at bulk and bubble-scale. Foam apparent viscosity was also determined in Hele-Shaw cell In order to investigate the foam performance at static and dynamic conditions. Results show that the maximum adsorption of surfactant on the nanoparticles occurs at 3 wt% surfactant concentration. Foam stability increases while the foamability decreases with the increasing nanoparticle concentration. However, optimum nanoparticle concentration corresponding to maximum foam stability was obtained at 1.0 wt% nanoparticle concentration for the hydrophilic SiO_2/SDS and Al_2O_3/SDS foams. Foam performance was enhanced with increasing nanoparticles hydrophobicity. Air-foams were generally more stable than CO_2 foams.Foam apparent viscosity increased in the presence of nanoparticles from 20.34 mPa·s to 84.84 mPa·s while the film thickness increased from 27.5 μm to 136 μm. This study suggests that the static and dynamic stability of conventional foams could be improved with addition of appropriate concentration of nanoparticles into the surfactant solution. The nanoparticles improve foam stability by their adsorption and aggregation at the foam lamellae to increase film thickness and dilational viscoelasticity. This prevents liquid drainage and film thinning and improves foam stability both at the bulk and bubble scale. 展开更多
关键词 Foam stability Bubble-scale Bulk-scale NANOPARTICLES Apparent viscosity
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