摘要
目的针对食品新鲜度下降过程产生的酸性气体(以CO_(2)为例)进行识别和指示。方法以高直链玉米淀粉、聚乙烯醇及交联剂等多种助剂为原料,负载pH响应性复合指示剂,利用高分子溶液聚合方式制得高直链玉米淀粉基pH响应性食品包装材料,简称HASF。结果对HASF指示材料透光性、吸水性、水溶性、力学性能进行分析,确定最佳比例;通过对指示材料CO_(2)的识别检测,确定复合指示剂中甲基红与溴百里酚蓝最优体积比为1∶2,最佳体积分数为6%;指示材料的红外光谱和扫描电镜显示,材料内部各组分间分散均匀,性质统一,相容性良好,该食品包装复合膜的性能稳定。结论HASF指示材料可适用于食品包装材料。同时,HASF指示材料可通过颜色转变对酸性气体进行识别和指示,为食品包装材料智能化提供了可能。
The aim is to identify and indicate the acidic gas(CO_(2) for example)generated during the process of food freshness decline.High amyloid-based pH responsive food packaging materials(HASF for short)prepared by the method of polymer solution polymerization are made from high amylose corn starch,polyvinyl alcohol,crosslinking agent and other auxiliaries and pH responsive composite indicators.The light transmittance,water absorption,water solubility and mechanical properties of the HASF indicator material are analyzed to determine the optimal ratio.Through the identification and detection of CO_(2) by the indicator materials,the volume ratio of methyl red to bromothymol blue in the composite indicator is determined to be 1:2 and the optimal additive amount is 6%.The infrared spectrum and scanning electron microscope show that the internal compatibility of the components is good.Therefore,the performance of the food packaging composite film is stable.The indicator materials can be used for food packaging materials.At the same time,the indicator materials can identify and indicate acid gas through color change,which provides the possibility for the intelligence of food packaging materials.
作者
陈雪风
艾月
史淞浩
李泽姝
黄健
刘秀奇
CHEN Xue-feng;AI Yue;SHI Song-hao;LI Ze-shu;HUANG Jian;LIU Xiu-qi(National Engineering Laboratory for Deep Processing of Wheat and Corn,Changchun 130118,China;School of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China)
出处
《包装工程》
CAS
北大核心
2021年第7期159-167,共9页
Packaging Engineering
基金
2018年吉林农业大学“国创计划”项目。
关键词
包装材料
高直链玉米淀粉
聚乙烯醇
pH
响应
packing materials
high amylose corn starch
polyvinyl alcohol
pH
response
