LI Lingli,QU Min,LIU Yujia,et al.Study on Antifreeze Activity and Functional of Alfalfa Ice Structuring Proteins[J].Northern Horticulture,2016,40(07):113-118.[doi:10.11937/bfyy.201607028]
苜蓿冰结构蛋白抗冻活性及功能性研究
- Title:
- Study on Antifreeze Activity and Functional of Alfalfa Ice Structuring Proteins
- Keywords:
- alfalfa; ice structuring protein; antifreeze activity; function
- 文献标志码:
- A
- 摘要:
- 以“肇东”紫花苜蓿干草为原料,采用磷酸盐缓冲溶液法提取苜蓿冰结构蛋白,研究了温度、pH值、NaCl及蔗糖浓度不同提取因素对苜蓿冰结构蛋白功能的影响。结果表明:苜蓿冰结构蛋白溶液的冰晶体积小、数量多、形状不规则,具有很好的抗冻活性;对苜蓿冰洁构蛋白的功能性进行测定,随着溶液pH值的增加,其溶解指数、持水性、乳化性和乳化稳定性、起泡性与泡沫稳定性都呈现出逐渐增大的趋势;随着NaCl浓度的增加,其起泡性和泡沫稳定性先增加后降低、乳化性和乳化稳定性呈现下降趋势;随着蔗糖浓度的增加,其蛋白起泡性和泡沫稳定性逐渐增加,而乳化性和乳化稳定性影响不大。
- Abstract:
- Taking ‘Zhaodong’ alfalfa as materials,ice structuring proteins were extracted using phosphate buffer solution and the effect of temperature,pH value,NaCl and sucrose concentration on the function of ice structuring proteins were studied.The results showed that the ice structuring proteins of alfalfa was small in size,large in number and irregular shape,it had good antifreeze activity.Furthermore,the functional studies of alfalfa protein were showed that the solubility index,water holding capacity,emulsifying property,emulsion stability,foamability and the foam stability were increased gradually with the increase of pH value of the solution.On the other hands,with the increase of NaCl concentration,the foamability and foam stability were increased and then decreased,and the emulsifying property and emulsion stability were decreased.Additionally with the increase of sucrose concentration,the foamability and foam stability were increased gradually.
参考文献/References:
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备注/Memo
第一作者简介:李凌俐(1989-),女,硕士,研究方向为新型植物蛋白。E-mail:18946076937@163.com. 责任作者:曲敏(1966-),女,黑龙江哈尔滨人,博士,教授,现主要从事新型植物蛋白及作物品质选育等研究工作。E-mail:qumin777@126.com. 基金项目:黑龙江省自然科学基金资助项目(C2011-24);黑龙江省教育厅科学技术研究资助项目(12511128);黑龙江省博士后科研启动基金资助项目(LBH-Q13098);2014年哈尔滨商业大学研究生创新科研资助项目(YJSCX2014-334HSD)。