研究了食品增稠剂藻酸丙二醇酯(PGA)的粘度特性。实验表明:PGA的粘度与其浓度之间存在着半对数线性关系(R2=0.9740);在pH2~10范围内,PGA的粘度几乎无变化,但当pH≥11时,PGA的粘度下降;PGA与羧甲基纤维素(CMC)具有良好增粘效应,但与海藻酸钠之间的效应较复杂。
The viscosity properties of food thickening agent propylene glycol alginate (PGA) are studied. Experiment indicate: there is semi- logarithmic linear relation between the viscosity and concerntration of PGA (R 2=0.974 0); In range of pH 2~10, the viscosity of PGA almost is constant, when pH≥11, the viscosity of PGA reduces. There is good viscosity synergism between PGA and CMC, the synergism between PGA and sodium alginate is more complex.