新鲜度指示型包装膜的构建及智能监测性能  

Construction and intelligent monitoring performance of freshness indicator packaging films

作　　者：程萌 王相友[1] 崔英俊 郭艳丽 王娟[1] 张荣飞[1] CHENG Meng;WANG Xiangyou;CUI Yingjun;GUO Yanli;WANG Juan;ZHANG Rongfei(College of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,Shandong,China)

机构地区：[1]山东理工大学农业工程与食品科学学院,山东淄博255049

出　　处：《精细化工》2023年第7期1532-1543,共12页Fine Chemicals

基　　金：国家自然科学基金面上项目(31972144);山东省自然科学基金项目(ZR2021MC015)。

摘　　要：为了延长产品的货架期及智能监测其品质变化,以乙酰化和磷酸化双改性木薯淀粉为原料,花青素为颜色指示剂,通过流延法制备了新鲜度指示型包装膜。采用正交实验探究了包装膜中木薯淀粉种类、木薯淀粉质量浓度、甘油含量、花青素浓缩液含量4个因素对膜物理、机械和水蒸气阻隔性能的交互影响,并考察了最优膜在鱼片包装中的颜色智能反应特性。结果表明,当乙酰化二淀粉磷酸酯质量浓度为40 g/L,甘油含量为30%(以乙酰化二淀粉磷酸酯的质量为基准,下同),花青素浓缩液含量为30%(以乙酰化二淀粉磷酸酯的质量为基准,下同)时,制备的包装膜(S1膜)综合性能最优,其透明度、水接触角、水蒸气透过率和抗拉强度分别为1.08 mm^(–1)、86.32°、1.19×10^(–10)g/(m·s·Pa)和14.23 MPa。S1膜在酸性、中性和碱性环境下分别呈粉红色、紫色和黄绿色,且对氨气反应灵敏。S1膜的颜色变化可反映鱼片新鲜度等级。In order to prolong the shelf life of products and intelligently monitor their quality changes,a series of freshness indicator packaging films were prepared via casting method using cassava starch dual-modified by acetylation and phosphorylation as raw material and anthocyanin as color indicator.The interactive influence of cassava starch type,cassava starch mass concentration,glycerin content and anthocyanin concentrate content on the physical,mechanical and water vapor barrier properties of packaging films were analyzed by orthogonal experiments,followed by evaluation on the intelligent color response characteristics of the optimal film for fish fillets packaging.The results showed that when the mass concentration of acetylated distarch phosphate was 40 g/L,the glycerol content was 30%(based on the mass of acetylated distarch phosphate,the same below),and the anthocyanin concentrate content was 30%(based on the mass of acetylated distarch phosphate,the same below),the packaging film(S1 film)obtained exhibited optimal comprehensive performance,the transparency,hydrophobicity,water vapor barrier capacity and tensile strength of S1 film was 1.08 mm^(–1),86.32°,1.19×10^(–10) g/(m×s×Pa)and 14.23 MPa,respectively,in comparison to those of natural cassava starch film.The S1 film displayed pink,purple and yellow-green in acidic,neutral and alkaline environments,respectively,and was sensitive to the ammonia gas.The color change of S1 film could indicate the freshness level of fish fillets.

关 键 词：双改性木薯淀粉 花青素 新鲜度监测 PH敏感 智能包装 食品化学品 

分 类 号：TS206.4[轻工技术与工程—食品科学]