为了提高绿豆蛋白酶解物(Mung bean protein hydrolysate,MBPH)在O/W体系中的乳化活性和抗氧化活性,使其在食品体系中能发挥更好的效果,本研究以丁香酚(Eugenol,EG)和MBPH为原料制备互作物,分析不同浓度EG与MBPH相互作用及对其功能活性...为了提高绿豆蛋白酶解物(Mung bean protein hydrolysate,MBPH)在O/W体系中的乳化活性和抗氧化活性,使其在食品体系中能发挥更好的效果,本研究以丁香酚(Eugenol,EG)和MBPH为原料制备互作物,分析不同浓度EG与MBPH相互作用及对其功能活性和结构特性的影响。结果表明:MBPH的乳化活性随EG浓度的增加呈依赖性增加,当EG浓度达到300μg/mL时,EG-MBPH互作物的乳化稳定性较好,抗氧化活性显著提高(P<0.05)。结构分析结果发现,EG浓度不同,EG-MBPH互作物的结构也发生了不同程度的变化,300μg/mL EG处理组的粒径较大且均匀;与MBPH相比,EG-MBPH的FTIR中特征吸收峰发生明显位移,且荧光强度下降,说明EG与MBPH发生相互作用,蛋白酶解物的结构发生改变。结论:300μg/mL EG的加入使MBPH乳化活性和抗氧化活性显著提高(P<0.05),该研究结果可为功能性乳化剂的开发与应用提供新思路。展开更多
A new ionic pair complex,1,2′-dinithile-1,2′-dithiolene nickel(II) containing substituted benzylpyridinium [Bz(Me)Py]2[Ni(mnt)2],is prepared and characterized by elemental analyses,IR,UV-VIS and single crystal X-ray...A new ionic pair complex,1,2′-dinithile-1,2′-dithiolene nickel(II) containing substituted benzylpyridinium [Bz(Me)Py]2[Ni(mnt)2],is prepared and characterized by elemental analyses,IR,UV-VIS and single crystal X-ray diffraction.Where [Bz(Me)Py]+ was 1-(1′-phenylethyl)-pyridinium and mnt2-is 1,2′-dinithile-1,2′-dithiolene.The crystal structure was solved by direct method and refined by full-matrix least-squares methods for All the nonhydrogen atoms.The final R1 and wR2 for all data were 0.0450 and 0.1236,respectively.The complex is composed of two [Bz(Me)Py]+ cations and a [Ni(mnt)2]2-anion.The [Ni(mnt)2]2-anions form a stepwise structure by π-π stacking interactions between the CN groups.The cation-anion C-H···N hydrogen bonds and cation-cation C-H···π interactions give further rise to a network structure.展开更多
文摘A new ionic pair complex,1,2′-dinithile-1,2′-dithiolene nickel(II) containing substituted benzylpyridinium [Bz(Me)Py]2[Ni(mnt)2],is prepared and characterized by elemental analyses,IR,UV-VIS and single crystal X-ray diffraction.Where [Bz(Me)Py]+ was 1-(1′-phenylethyl)-pyridinium and mnt2-is 1,2′-dinithile-1,2′-dithiolene.The crystal structure was solved by direct method and refined by full-matrix least-squares methods for All the nonhydrogen atoms.The final R1 and wR2 for all data were 0.0450 and 0.1236,respectively.The complex is composed of two [Bz(Me)Py]+ cations and a [Ni(mnt)2]2-anion.The [Ni(mnt)2]2-anions form a stepwise structure by π-π stacking interactions between the CN groups.The cation-anion C-H···N hydrogen bonds and cation-cation C-H···π interactions give further rise to a network structure.
