In this study, the effect of sunflower head pith powder at various concentrations （0.0, 0.5, 1.0, 1.5, 2.0%） on the emulsion properties of mechanically deboned chicken meat （MDCM） was investigated in a model syste...In this study, the effect of sunflower head pith powder at various concentrations （0.0, 0.5, 1.0, 1.5, 2.0%） on the emulsion properties of mechanically deboned chicken meat （MDCM） was investigated in a model system. For this purpose, fresh and frozen MDCM samples were used for preparing the oil/water （O/W） model emulsion systems, pH values of slurries and emulsions, emulsion capacity （EC）, stability （ES） and viscosity （EV） of the prepared model system emulsions were analyzed. Protein, fat, ash, dry matter contents and pH value of MDCM were 14.85, 14.93, 0.99, 30.45% and 6.7, respectively. It was found that the pith powder addition significantly （P 〈 0.01） decreased the pH values of slurries. On the other hand, the effect of pith powder addition on pH values of emulsions was insignificant （P 〉 0.01）. The highest EC value was reached when 1% of pith powder added. ES values of the emulsions reached a maximum level at 1.5% pith powder level. Fresh MDCM emulsions had higher EV values than did frozen MDCM emulsions at 10, 20, 50 rpm.展开更多
PMMA/reactive nanoclay nanocomposites were prepared by emulsion polymerization using two different reactive nanoclays. X-ray diffraction（XRD） and thermogravimetric analysis（TGA） results confirmed that the reactive...PMMA/reactive nanoclay nanocomposites were prepared by emulsion polymerization using two different reactive nanoclays. X-ray diffraction（XRD） and thermogravimetric analysis（TGA） results confirmed that the reactive nanoclays, kaolinite and montmorillonite, were obtained by the silylation reaction and the double bonds were grafted onto the edges and surfaces of the nanoclays. The presence of reactive nanoclays could increase the average molecular weights, the glass transition temperatures（Tg） and improve the thermal properties of nanocomposite. The tensile properties, Young＇s modulus, and the aging properties of the nanocomposite films were also enhanced while the light transmittance decreased. Furthermore, the nanocomposites with the reactive kaolinite presented better performances than that with the reactive montmorillonite. Finally, the action mechanism of the reactive nanoclays to the performances of PMMA/reactive nanoclay nanocomposites was proposed.展开更多
INVESTIGAORS recognized the role of finely divided insoluble solid particles in stabilizing oil-water emulsions in the 1920s. The work has been extensively done since the 1980s. Butthe studies only focused on particle...INVESTIGAORS recognized the role of finely divided insoluble solid particles in stabilizing oil-water emulsions in the 1920s. The work has been extensively done since the 1980s. Butthe studies only focused on particles with the parameter up to micrometer size rather than thoseof nanometer size. In this letter, emulsive properties, including the type, ability and mecha-展开更多
文摘In this study, the effect of sunflower head pith powder at various concentrations （0.0, 0.5, 1.0, 1.5, 2.0%） on the emulsion properties of mechanically deboned chicken meat （MDCM） was investigated in a model system. For this purpose, fresh and frozen MDCM samples were used for preparing the oil/water （O/W） model emulsion systems, pH values of slurries and emulsions, emulsion capacity （EC）, stability （ES） and viscosity （EV） of the prepared model system emulsions were analyzed. Protein, fat, ash, dry matter contents and pH value of MDCM were 14.85, 14.93, 0.99, 30.45% and 6.7, respectively. It was found that the pith powder addition significantly （P 〈 0.01） decreased the pH values of slurries. On the other hand, the effect of pith powder addition on pH values of emulsions was insignificant （P 〉 0.01）. The highest EC value was reached when 1% of pith powder added. ES values of the emulsions reached a maximum level at 1.5% pith powder level. Fresh MDCM emulsions had higher EV values than did frozen MDCM emulsions at 10, 20, 50 rpm.
基金Funded by the National Youth Natural Science Foundation of China(No.21406247)
文摘PMMA/reactive nanoclay nanocomposites were prepared by emulsion polymerization using two different reactive nanoclays. X-ray diffraction（XRD） and thermogravimetric analysis（TGA） results confirmed that the reactive nanoclays, kaolinite and montmorillonite, were obtained by the silylation reaction and the double bonds were grafted onto the edges and surfaces of the nanoclays. The presence of reactive nanoclays could increase the average molecular weights, the glass transition temperatures（Tg） and improve the thermal properties of nanocomposite. The tensile properties, Young＇s modulus, and the aging properties of the nanocomposite films were also enhanced while the light transmittance decreased. Furthermore, the nanocomposites with the reactive kaolinite presented better performances than that with the reactive montmorillonite. Finally, the action mechanism of the reactive nanoclays to the performances of PMMA/reactive nanoclay nanocomposites was proposed.
文摘INVESTIGAORS recognized the role of finely divided insoluble solid particles in stabilizing oil-water emulsions in the 1920s. The work has been extensively done since the 1980s. Butthe studies only focused on particles with the parameter up to micrometer size rather than thoseof nanometer size. In this letter, emulsive properties, including the type, ability and mecha-
