摘要
海藻酸钠溶液的流变学特性及影响黏度因素尚缺少更为系统的研究。本文研究海藻酸钠溶液的静态流变性、动态黏弹性和触变性,用单因素和响应面试验分析浓度、温度、pH和搅拌时间对海藻酸钠溶液黏度的影响。结果表明:海藻酸钠溶液体系为非牛顿流体,1.0%海藻酸钠溶液拟合Herschel-Bulkley模型效果最好。不同浓度海藻酸钠溶液随不同的角频率处理展现不同的动态粘弹性行为。触变环面积随着海藻酸钠溶液浓度的升高而变大,溶液结构受到的破坏也变大,恢复能力减弱。海藻酸钠浓度和溶液黏度呈正相关,在25℃、pH 8.1、搅拌3.1 h的条件下溶液黏度较高。研究结果完善了海藻酸钠的应用基础,能为海藻酸钠的更好应用提供理论支持。
Since rheological properties of sodium alginate and influencing factors on its viscosity need to be investigated more systematically,the static rheology,dynamic viscoelasticity and thixotropy of sodium alginate solution were studied.The effects of concentration,temperature,pH and stirring time on the viscosity of sodium alginate solution were analyzed by single factor and response surface experiments.The results showed that the sodium alginate solution system was a non-Newtonian fluid,and 1.0%sodium alginate solution fitted the Herschel-Bulkley model best.Different concentrations of sodium alginate solution exhibited different dynamic viscoelastic behaviors with different angular frequencies.The area of the thixotropic ring increased with the increase of the concentration of sodium alginate solution,the damage to the solution structure also increased,and the recovery ability of the structure was weakened.The concentration of sodium alginate solution were positively correlated with the viscosity of the solution,and the sodium alginate solution exhibited high viscosity under the conditions of 25℃,pH 8.1 and stirring for 3.1 h.The study improves the application basis of sodium alginate and provides theoretical support for better application of sodium alginate.
作者
陈昌威
付靖雯
沈祥皓
李湖平
叶静静
谢箭
王灵昭
盘赛昆
CHEN Changwei;FU Jingwen;SHEN Xianghao;LI Huping;YE Jingjing;XIE Jian;WANG Lingzhao;PAN Saikun(School of Food Science and Engineering,Jiangsu Ocean University,Lianyungang 222000;Lianyungang Xin’ai Food Technology Co.,Ltd.,Lianyungang 222000)
出处
《中国食品添加剂》
CAS
2024年第1期99-108,共10页
China Food Additives
基金
连云港新爱食品科技有限公司委托开发项目(JOUH22173)
连云港市“海燕计划”项目(2019-QD-005)
江苏省产学研合作项目(BY2018212)。
关键词
海藻酸钠
静态流变性
动态黏弹性
触变性
单因素
响应面
黏度
sodium alginate
static rheological properties
dynamic viscoelasticity
thixotropy
single factor
response surface
viscosity
