基于紫甘蓝色素的智能凝胶材料及其甲醛变色研究  

A smart gel based on red cabbage anthocyanin and its formaldehyde-responsive chromism

作　　者：白剑芸 贲倩岑 田晶 潘浩 孟庆华[2] Jianyun Bai;Qiancen Ben;Jing Tian;Hao Pan;Qinghua Meng(Full of Hope(Shanghai)Biotechnology Co.,Ltd.,Shanghai 200241,China;School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海希望树生物科技有限公司,上海200241 [2]上海交通大学化学化工学院,上海200240

出　　处：《日用化学工业（中英文）》2024年第2期196-200,共5页China Surfactant Detergent & Cosmetics

摘　　要：通过溶剂提取紫甘蓝中的花青苷色素(CabAn),在该色素化学结构的基础上,利用其质子化互变异构形成pH响应变色的特点,设计其与羟胺盐组合为超分子探针,通过甲醛与羟胺盐反应释放质子,而该质子则与花青苷的青绿色醌式体结合转化为紫红色吡喃鎓式,从而实现甲醛变色功能,并将超分子探针溶于琼脂制备成智能凝胶(CabAn_HA@Agar),按照国际照明委员会基于CIELab颜色空间定义色差的方法来测量计算甲醛浓度。The red cabbage leaves are found rich in anthocyanins which have antioxidant activity and can reduce the damage of free radicals on human tissues and improve the regeneration ability of tissues.In this work,the anthocyanin pigments were extracted from red cabbage by solvents.Based on the chemical structure,a combination of the pigment and hydroxylammonium salt was designed as a supramolecular probe by taking advantage of its protonation tautomerism to form pH-responsive chromism.The proton was released through the reaction between formaldehyde and hydroxylammonium salt,and the proton would combine with the anthocyanin which was converted from cyan-green quinone form into a purplish red pyrylium form,thus realizing the color-change function by reaction with formaldehyde.A smart gel was prepared by dissolving the supramolecular probe in agar.Scanning electron microscopy(SEM)was used to analyze the micromorphology of the smart gel.The surface of the smart hydrogel was porous(pore size was 100-300μm),and there were intercommunication channels inside the gel.These pore structures were conducive to the migration of color reaction substances.The formaldehyde concentration was then measured and calculated according to the method of CIE to define color difference based on CIELab color space.

关 键 词：紫甘蓝 智能凝胶 甲醛 超分子探针 

分 类 号：TQ427.26[化学工程]