海藻酸钠与κ-卡拉胶复配胶体的流变特性研究  

Study on Rheological Properties of Sodium Alginate and κ-Carrageenan Complex Gel

作　　者：陈丽叶 许仁杰 林艳秋 王艺伟[3] 宋洪波[3] CHEN Liye;XU Renjie;LIN Yanqiu;WANG Yiwei;SONG Hongbo(Fujian Inspection and Research Institute for Product Quality,Fuzhou 350015,China;Sinograin Changle Depot Co.,Ltd.,Fuzhou 350217,China;College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建省产品质量检验研究院,福建福州350015 [2]中央储备粮长乐直属库有限公司,福建福州350217 [3]福建农林大学食品科学学院,福建福州350002

出　　处：《现代食品》2022年第10期191-196,共6页Modern Food

摘　　要：为发现海藻酸钠和κ-卡拉胶复配胶体在食品工业和制药工业中的潜在功能,本文主要研究海藻酸钠和κ-卡拉胶复配胶体的流动曲线、触变性和动态黏弹性等流变特性。结果表明,复配胶体为假塑性流体,具有剪切稀化特性;κ-卡拉胶组成占比加大,黏度、贮藏模量G′和损耗模量G′′、复数黏度均先减小后增加,海藻酸钠和κ-卡拉胶比例为8∶2时均最小。复配胶体均无明显触变环,触变性较小,稳定性较好,其流动特性符合Herschel-Bulkley方程。复配胶体的凝胶温度和熔化温度均随着组分κ-卡拉胶所占比例的增大而升高,熔化温度均高于凝胶温度。海藻酸钠和κ-卡拉胶复配比例对其流变特性影响明显,在微胶囊、固定化酶等方面应用中可按实际情况选择合适的复配比。In order to discover the potential functions the sodium alginate andκ-carrageenan complex gel in food application and pharmaceutical industry,the rheological properties(the flow curve,thixotropy,dynamic viscoelasticity and so on)of sodium alginate andκ-carrageenan complex gel were researched.The results show that the complex gel were pseudoplastic fluid,and had the shear thinning characteristic.When the proportion ofκ-carrageenan increased,the viscosity,storage modulus G´and loss modulus G´´,and complex viscosity first decreased and then increased,and the lowest values were found when the ratio of sodium alginate to κ-carrageenan was 8∶2.The complex gel was almost not thixotropic loop,low thixotropy and good stability.The flow characteristics conformed to Herschel-Bulkely equation.The geling temperature and melting temperature of the complex gel increased with the increase of the proportion ofκ-carrageenan.The melting temperature is higher than the gel temperature.The mixture ratio of sodium alginate andκ-carrageenan had obvious effect on its rheological properties,which can be used in microcapsules and immobilized enzymes according to actual situation.In the application of microcapsules and immobilized enzymes,the appropriate compounding ratio can be selected according to the actual situation.

关 键 词：海藻酸钠 Κ-卡拉胶 流动曲线 触变性 动态黏弹性 

分 类 号：TQ427[化学工程]